/* * avconv main * Copyright (c) 2000-2011 The libav developers. * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "config.h" #include #include #include #include #include #include #include #include "libavformat/avformat.h" #include "libavdevice/avdevice.h" #include "libswscale/swscale.h" #include "libavresample/avresample.h" #include "libavutil/opt.h" #include "libavutil/audioconvert.h" #include "libavutil/parseutils.h" #include "libavutil/samplefmt.h" #include "libavutil/colorspace.h" #include "libavutil/fifo.h" #include "libavutil/intreadwrite.h" #include "libavutil/dict.h" #include "libavutil/mathematics.h" #include "libavutil/pixdesc.h" #include "libavutil/avstring.h" #include "libavutil/libm.h" #include "libavutil/imgutils.h" #include "libavutil/time.h" #include "libavformat/os_support.h" # include "libavfilter/avfilter.h" # include "libavfilter/avfiltergraph.h" # include "libavfilter/buffersrc.h" # include "libavfilter/buffersink.h" #if HAVE_SYS_RESOURCE_H #include #include #elif HAVE_GETPROCESSTIMES #include #endif #if HAVE_GETPROCESSMEMORYINFO #include #include #endif #if HAVE_SYS_SELECT_H #include #endif #if HAVE_PTHREADS #include #endif #include #include "avconv.h" #include "cmdutils.h" #include "libavutil/avassert.h" const char program_name[] = "avconv"; const int program_birth_year = 2000; static FILE *vstats_file; static int64_t video_size = 0; static int64_t audio_size = 0; static int64_t extra_size = 0; static int nb_frames_dup = 0; static int nb_frames_drop = 0; #if HAVE_PTHREADS /* signal to input threads that they should exit; set by the main thread */ static int transcoding_finished; #endif #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass" InputStream **input_streams = NULL; int nb_input_streams = 0; InputFile **input_files = NULL; int nb_input_files = 0; OutputStream **output_streams = NULL; int nb_output_streams = 0; OutputFile **output_files = NULL; int nb_output_files = 0; FilterGraph **filtergraphs; int nb_filtergraphs; static void term_exit(void) { av_log(NULL, AV_LOG_QUIET, ""); } static volatile int received_sigterm = 0; static volatile int received_nb_signals = 0; static void sigterm_handler(int sig) { received_sigterm = sig; received_nb_signals++; term_exit(); } static void term_init(void) { signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */ signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */ #ifdef SIGXCPU signal(SIGXCPU, sigterm_handler); #endif } static int decode_interrupt_cb(void *ctx) { return received_nb_signals > 1; } const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL }; void exit_program(int ret) { int i, j; for (i = 0; i < nb_filtergraphs; i++) { avfilter_graph_free(&filtergraphs[i]->graph); for (j = 0; j < filtergraphs[i]->nb_inputs; j++) { av_freep(&filtergraphs[i]->inputs[j]->name); av_freep(&filtergraphs[i]->inputs[j]); } av_freep(&filtergraphs[i]->inputs); for (j = 0; j < filtergraphs[i]->nb_outputs; j++) { av_freep(&filtergraphs[i]->outputs[j]->name); av_freep(&filtergraphs[i]->outputs[j]); } av_freep(&filtergraphs[i]->outputs); av_freep(&filtergraphs[i]); } av_freep(&filtergraphs); /* close files */ for (i = 0; i < nb_output_files; i++) { AVFormatContext *s = output_files[i]->ctx; if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb) avio_close(s->pb); avformat_free_context(s); av_dict_free(&output_files[i]->opts); av_freep(&output_files[i]); } for (i = 0; i < nb_output_streams; i++) { AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters; while (bsfc) { AVBitStreamFilterContext *next = bsfc->next; av_bitstream_filter_close(bsfc); bsfc = next; } output_streams[i]->bitstream_filters = NULL; av_freep(&output_streams[i]->forced_keyframes); av_freep(&output_streams[i]->avfilter); av_freep(&output_streams[i]->filtered_frame); av_freep(&output_streams[i]); } for (i = 0; i < nb_input_files; i++) { avformat_close_input(&input_files[i]->ctx); av_freep(&input_files[i]); } for (i = 0; i < nb_input_streams; i++) { av_freep(&input_streams[i]->decoded_frame); av_dict_free(&input_streams[i]->opts); free_buffer_pool(&input_streams[i]->buffer_pool); av_freep(&input_streams[i]->filters); av_freep(&input_streams[i]); } if (vstats_file) fclose(vstats_file); av_free(vstats_filename); av_freep(&input_streams); av_freep(&input_files); av_freep(&output_streams); av_freep(&output_files); uninit_opts(); avfilter_uninit(); avformat_network_deinit(); if (received_sigterm) { av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n", (int) received_sigterm); exit (255); } exit(ret); } void assert_avoptions(AVDictionary *m) { AVDictionaryEntry *t; if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) { av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key); exit_program(1); } } static void assert_codec_experimental(AVCodecContext *c, int encoder) { const char *codec_string = encoder ? "encoder" : "decoder"; AVCodec *codec; if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL && c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) { av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad " "results.\nAdd '-strict experimental' if you want to use it.\n", codec_string, c->codec->name); codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id); if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL)) av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n", codec_string, codec->name); exit_program(1); } } /** * Update the requested input sample format based on the output sample format. * This is currently only used to request float output from decoders which * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT. * Ideally this will be removed in the future when decoders do not do format * conversion and only output in their native format. */ static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec, AVCodecContext *enc) { /* if sample formats match or a decoder sample format has already been requested, just return */ if (enc->sample_fmt == dec->sample_fmt || dec->request_sample_fmt > AV_SAMPLE_FMT_NONE) return; /* if decoder supports more than one output format */ if (dec_codec && dec_codec->sample_fmts && dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE && dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) { const enum AVSampleFormat *p; int min_dec = -1, min_inc = -1; /* find a matching sample format in the encoder */ for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) { if (*p == enc->sample_fmt) { dec->request_sample_fmt = *p; return; } else if (*p > enc->sample_fmt) { min_inc = FFMIN(min_inc, *p - enc->sample_fmt); } else min_dec = FFMIN(min_dec, enc->sample_fmt - *p); } /* if none match, provide the one that matches quality closest */ dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc : enc->sample_fmt - min_dec; } } static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost) { AVBitStreamFilterContext *bsfc = ost->bitstream_filters; AVCodecContext *avctx = ost->st->codec; int ret; /* * Audio encoders may split the packets -- #frames in != #packets out. * But there is no reordering, so we can limit the number of output packets * by simply dropping them here. * Counting encoded video frames needs to be done separately because of * reordering, see do_video_out() */ if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) { if (ost->frame_number >= ost->max_frames) { av_free_packet(pkt); return; } ost->frame_number++; } while (bsfc) { AVPacket new_pkt = *pkt; int a = av_bitstream_filter_filter(bsfc, avctx, NULL, &new_pkt.data, &new_pkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY); if (a > 0) { av_free_packet(pkt); new_pkt.destruct = av_destruct_packet; } else if (a < 0) { av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s", bsfc->filter->name, pkt->stream_index, avctx->codec ? avctx->codec->name : "copy"); print_error("", a); if (exit_on_error) exit_program(1); } *pkt = new_pkt; bsfc = bsfc->next; } pkt->stream_index = ost->index; ret = av_interleaved_write_frame(s, pkt); if (ret < 0) { print_error("av_interleaved_write_frame()", ret); exit_program(1); } } static int check_recording_time(OutputStream *ost) { OutputFile *of = output_files[ost->file_index]; if (of->recording_time != INT64_MAX && av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time, AV_TIME_BASE_Q) >= 0) { ost->is_past_recording_time = 1; return 0; } return 1; } static void do_audio_out(AVFormatContext *s, OutputStream *ost, AVFrame *frame) { AVCodecContext *enc = ost->st->codec; AVPacket pkt; int got_packet = 0; av_init_packet(&pkt); pkt.data = NULL; pkt.size = 0; if (!check_recording_time(ost)) return; if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0) frame->pts = ost->sync_opts; ost->sync_opts = frame->pts + frame->nb_samples; if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) { av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n"); exit_program(1); } if (got_packet) { if (pkt.pts != AV_NOPTS_VALUE) pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base); if (pkt.dts != AV_NOPTS_VALUE) pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base); if (pkt.duration > 0) pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base); write_frame(s, &pkt, ost); audio_size += pkt.size; } } static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp) { AVCodecContext *dec; AVPicture *picture2; AVPicture picture_tmp; uint8_t *buf = 0; dec = ist->st->codec; /* deinterlace : must be done before any resize */ if (do_deinterlace) { int size; /* create temporary picture */ size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height); buf = av_malloc(size); if (!buf) return; picture2 = &picture_tmp; avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height); if (avpicture_deinterlace(picture2, picture, dec->pix_fmt, dec->width, dec->height) < 0) { /* if error, do not deinterlace */ av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n"); av_free(buf); buf = NULL; picture2 = picture; } } else { picture2 = picture; } if (picture != picture2) *picture = *picture2; *bufp = buf; } static void do_subtitle_out(AVFormatContext *s, OutputStream *ost, InputStream *ist, AVSubtitle *sub, int64_t pts) { static uint8_t *subtitle_out = NULL; int subtitle_out_max_size = 1024 * 1024; int subtitle_out_size, nb, i; AVCodecContext *enc; AVPacket pkt; if (pts == AV_NOPTS_VALUE) { av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n"); if (exit_on_error) exit_program(1); return; } enc = ost->st->codec; if (!subtitle_out) { subtitle_out = av_malloc(subtitle_out_max_size); } /* Note: DVB subtitle need one packet to draw them and one other packet to clear them */ /* XXX: signal it in the codec context ? */ if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) nb = 2; else nb = 1; for (i = 0; i < nb; i++) { ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base); if (!check_recording_time(ost)) return; sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q); // start_display_time is required to be 0 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q); sub->end_display_time -= sub->start_display_time; sub->start_display_time = 0; subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out, subtitle_out_max_size, sub); if (subtitle_out_size < 0) { av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n"); exit_program(1); } av_init_packet(&pkt); pkt.data = subtitle_out; pkt.size = subtitle_out_size; pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base); if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) { /* XXX: the pts correction is handled here. Maybe handling it in the codec would be better */ if (i == 0) pkt.pts += 90 * sub->start_display_time; else pkt.pts += 90 * sub->end_display_time; } write_frame(s, &pkt, ost); } } static void do_video_out(AVFormatContext *s, OutputStream *ost, AVFrame *in_picture, int *frame_size, float quality) { int ret, format_video_sync; AVPacket pkt; AVCodecContext *enc = ost->st->codec; *frame_size = 0; format_video_sync = video_sync_method; if (format_video_sync == VSYNC_AUTO) format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR; if (format_video_sync != VSYNC_PASSTHROUGH && ost->frame_number && in_picture->pts != AV_NOPTS_VALUE && in_picture->pts < ost->sync_opts) { nb_frames_drop++; av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n"); return; } if (in_picture->pts == AV_NOPTS_VALUE) in_picture->pts = ost->sync_opts; ost->sync_opts = in_picture->pts; if (!ost->frame_number) ost->first_pts = in_picture->pts; av_init_packet(&pkt); pkt.data = NULL; pkt.size = 0; if (!check_recording_time(ost) || ost->frame_number >= ost->max_frames) return; if (s->oformat->flags & AVFMT_RAWPICTURE && enc->codec->id == AV_CODEC_ID_RAWVIDEO) { /* raw pictures are written as AVPicture structure to avoid any copies. We support temporarily the older method. */ enc->coded_frame->interlaced_frame = in_picture->interlaced_frame; enc->coded_frame->top_field_first = in_picture->top_field_first; pkt.data = (uint8_t *)in_picture; pkt.size = sizeof(AVPicture); pkt.pts = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base); pkt.flags |= AV_PKT_FLAG_KEY; write_frame(s, &pkt, ost); } else { int got_packet; AVFrame big_picture; big_picture = *in_picture; /* better than nothing: use input picture interlaced settings */ big_picture.interlaced_frame = in_picture->interlaced_frame; if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) { if (ost->top_field_first == -1) big_picture.top_field_first = in_picture->top_field_first; else big_picture.top_field_first = !!ost->top_field_first; } /* handles same_quant here. This is not correct because it may not be a global option */ big_picture.quality = quality; if (!enc->me_threshold) big_picture.pict_type = 0; if (ost->forced_kf_index < ost->forced_kf_count && big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) { big_picture.pict_type = AV_PICTURE_TYPE_I; ost->forced_kf_index++; } ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet); if (ret < 0) { av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n"); exit_program(1); } if (got_packet) { if (pkt.pts != AV_NOPTS_VALUE) pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base); if (pkt.dts != AV_NOPTS_VALUE) pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base); write_frame(s, &pkt, ost); *frame_size = pkt.size; video_size += pkt.size; /* if two pass, output log */ if (ost->logfile && enc->stats_out) { fprintf(ost->logfile, "%s", enc->stats_out); } } } ost->sync_opts++; /* * For video, number of frames in == number of packets out. * But there may be reordering, so we can't throw away frames on encoder * flush, we need to limit them here, before they go into encoder. */ ost->frame_number++; } static double psnr(double d) { return -10.0 * log(d) / log(10.0); } static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size) { AVCodecContext *enc; int frame_number; double ti1, bitrate, avg_bitrate; /* this is executed just the first time do_video_stats is called */ if (!vstats_file) { vstats_file = fopen(vstats_filename, "w"); if (!vstats_file) { perror("fopen"); exit_program(1); } } enc = ost->st->codec; if (enc->codec_type == AVMEDIA_TYPE_VIDEO) { frame_number = ost->frame_number; fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA); if (enc->flags&CODEC_FLAG_PSNR) fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0))); fprintf(vstats_file,"f_size= %6d ", frame_size); /* compute pts value */ ti1 = ost->sync_opts * av_q2d(enc->time_base); if (ti1 < 0.01) ti1 = 0.01; bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0; avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0; fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ", (double)video_size / 1024, ti1, bitrate, avg_bitrate); fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type)); } } /** * Read one frame for lavfi output for ost and encode it. */ static int poll_filter(OutputStream *ost) { OutputFile *of = output_files[ost->file_index]; AVFilterBufferRef *picref; AVFrame *filtered_frame = NULL; int frame_size, ret; if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) { return AVERROR(ENOMEM); } else avcodec_get_frame_defaults(ost->filtered_frame); filtered_frame = ost->filtered_frame; if (ost->enc->type == AVMEDIA_TYPE_AUDIO && !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) ret = av_buffersink_read_samples(ost->filter->filter, &picref, ost->st->codec->frame_size); else ret = av_buffersink_read(ost->filter->filter, &picref); if (ret < 0) return ret; avfilter_copy_buf_props(filtered_frame, picref); if (picref->pts != AV_NOPTS_VALUE) { filtered_frame->pts = av_rescale_q(picref->pts, ost->filter->filter->inputs[0]->time_base, ost->st->codec->time_base) - av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->codec->time_base); if (of->start_time && filtered_frame->pts < 0) { avfilter_unref_buffer(picref); return 0; } } switch (ost->filter->filter->inputs[0]->type) { case AVMEDIA_TYPE_VIDEO: if (!ost->frame_aspect_ratio) ost->st->codec->sample_aspect_ratio = picref->video->pixel_aspect; do_video_out(of->ctx, ost, filtered_frame, &frame_size, same_quant ? ost->last_quality : ost->st->codec->global_quality); if (vstats_filename && frame_size) do_video_stats(of->ctx, ost, frame_size); break; case AVMEDIA_TYPE_AUDIO: do_audio_out(of->ctx, ost, filtered_frame); break; default: // TODO support subtitle filters av_assert0(0); } avfilter_unref_buffer(picref); return 0; } /** * Read as many frames from possible from lavfi and encode them. * * Always read from the active stream with the lowest timestamp. If no frames * are available for it then return EAGAIN and wait for more input. This way we * can use lavfi sources that generate unlimited amount of frames without memory * usage exploding. */ static int poll_filters(void) { int i, ret = 0; while (ret >= 0 && !received_sigterm) { OutputStream *ost = NULL; int64_t min_pts = INT64_MAX; /* choose output stream with the lowest timestamp */ for (i = 0; i < nb_output_streams; i++) { int64_t pts = output_streams[i]->sync_opts; if (!output_streams[i]->filter || output_streams[i]->is_past_recording_time) continue; pts = av_rescale_q(pts, output_streams[i]->st->codec->time_base, AV_TIME_BASE_Q); if (pts < min_pts) { min_pts = pts; ost = output_streams[i]; } } if (!ost) break; ret = poll_filter(ost); if (ret == AVERROR_EOF) { ost->is_past_recording_time = 1; if (opt_shortest) return ret; ret = 0; } else if (ret == AVERROR(EAGAIN)) return 0; } return ret; } static void print_report(int is_last_report, int64_t timer_start) { char buf[1024]; OutputStream *ost; AVFormatContext *oc; int64_t total_size; AVCodecContext *enc; int frame_number, vid, i; double bitrate, ti1, pts; static int64_t last_time = -1; static int qp_histogram[52]; if (!print_stats && !is_last_report) return; if (!is_last_report) { int64_t cur_time; /* display the report every 0.5 seconds */ cur_time = av_gettime(); if (last_time == -1) { last_time = cur_time; return; } if ((cur_time - last_time) < 500000) return; last_time = cur_time; } oc = output_files[0]->ctx; total_size = avio_size(oc->pb); if (total_size < 0) // FIXME improve avio_size() so it works with non seekable output too total_size = avio_tell(oc->pb); buf[0] = '\0'; ti1 = 1e10; vid = 0; for (i = 0; i < nb_output_streams; i++) { float q = -1; ost = output_streams[i]; enc = ost->st->codec; if (!ost->stream_copy && enc->coded_frame) q = enc->coded_frame->quality / (float)FF_QP2LAMBDA; if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) { snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q); } if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) { float t = (av_gettime() - timer_start) / 1000000.0; frame_number = ost->frame_number; snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ", frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q); if (is_last_report) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L"); if (qp_hist) { int j; int qp = lrintf(q); if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram)) qp_histogram[qp]++; for (j = 0; j < 32; j++) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2))); } if (enc->flags&CODEC_FLAG_PSNR) { int j; double error, error_sum = 0; double scale, scale_sum = 0; char type[3] = { 'Y','U','V' }; snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR="); for (j = 0; j < 3; j++) { if (is_last_report) { error = enc->error[j]; scale = enc->width * enc->height * 255.0 * 255.0 * frame_number; } else { error = enc->coded_frame->error[j]; scale = enc->width * enc->height * 255.0 * 255.0; } if (j) scale /= 4; error_sum += error; scale_sum += scale; snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale)); } snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum)); } vid = 1; } /* compute min output value */ pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base); if ((pts < ti1) && (pts > 0)) ti1 = pts; } if (ti1 < 0.01) ti1 = 0.01; bitrate = (double)(total_size * 8) / ti1 / 1000.0; snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s", (double)total_size / 1024, ti1, bitrate); if (nb_frames_dup || nb_frames_drop) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d", nb_frames_dup, nb_frames_drop); av_log(NULL, AV_LOG_INFO, "%s \r", buf); fflush(stderr); if (is_last_report) { int64_t raw= audio_size + video_size + extra_size; av_log(NULL, AV_LOG_INFO, "\n"); av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n", video_size / 1024.0, audio_size / 1024.0, extra_size / 1024.0, 100.0 * (total_size - raw) / raw ); } } static void flush_encoders(void) { int i, ret; for (i = 0; i < nb_output_streams; i++) { OutputStream *ost = output_streams[i]; AVCodecContext *enc = ost->st->codec; AVFormatContext *os = output_files[ost->file_index]->ctx; int stop_encoding = 0; if (!ost->encoding_needed) continue; if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1) continue; if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO) continue; for (;;) { int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL; const char *desc; int64_t *size; switch (ost->st->codec->codec_type) { case AVMEDIA_TYPE_AUDIO: encode = avcodec_encode_audio2; desc = "Audio"; size = &audio_size; break; case AVMEDIA_TYPE_VIDEO: encode = avcodec_encode_video2; desc = "Video"; size = &video_size; break; default: stop_encoding = 1; } if (encode) { AVPacket pkt; int got_packet; av_init_packet(&pkt); pkt.data = NULL; pkt.size = 0; ret = encode(enc, &pkt, NULL, &got_packet); if (ret < 0) { av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc); exit_program(1); } *size += ret; if (ost->logfile && enc->stats_out) { fprintf(ost->logfile, "%s", enc->stats_out); } if (!got_packet) { stop_encoding = 1; break; } if (pkt.pts != AV_NOPTS_VALUE) pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base); if (pkt.dts != AV_NOPTS_VALUE) pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base); write_frame(os, &pkt, ost); } if (stop_encoding) break; } } } /* * Check whether a packet from ist should be written into ost at this time */ static int check_output_constraints(InputStream *ist, OutputStream *ost) { OutputFile *of = output_files[ost->file_index]; int ist_index = input_files[ist->file_index]->ist_index + ist->st->index; if (ost->source_index != ist_index) return 0; if (of->start_time && ist->last_dts < of->start_time) return 0; return 1; } static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt) { OutputFile *of = output_files[ost->file_index]; int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base); AVPacket opkt; av_init_packet(&opkt); if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !ost->copy_initial_nonkeyframes) return; if (of->recording_time != INT64_MAX && ist->last_dts >= of->recording_time + of->start_time) { ost->is_past_recording_time = 1; return; } /* force the input stream PTS */ if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) audio_size += pkt->size; else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { video_size += pkt->size; ost->sync_opts++; } if (pkt->pts != AV_NOPTS_VALUE) opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time; else opkt.pts = AV_NOPTS_VALUE; if (pkt->dts == AV_NOPTS_VALUE) opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->st->time_base); else opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base); opkt.dts -= ost_tb_start_time; opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base); opkt.flags = pkt->flags; // FIXME remove the following 2 lines they shall be replaced by the bitstream filters if ( ost->st->codec->codec_id != AV_CODEC_ID_H264 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO && ost->st->codec->codec_id != AV_CODEC_ID_VC1 ) { if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) opkt.destruct = av_destruct_packet; } else { opkt.data = pkt->data; opkt.size = pkt->size; } write_frame(of->ctx, &opkt, ost); ost->st->codec->frame_number++; av_free_packet(&opkt); } static void rate_emu_sleep(InputStream *ist) { if (input_files[ist->file_index]->rate_emu) { int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE); int64_t now = av_gettime() - ist->start; if (pts > now) av_usleep(pts - now); } } int guess_input_channel_layout(InputStream *ist) { AVCodecContext *dec = ist->st->codec; if (!dec->channel_layout) { char layout_name[256]; dec->channel_layout = av_get_default_channel_layout(dec->channels); if (!dec->channel_layout) return 0; av_get_channel_layout_string(layout_name, sizeof(layout_name), dec->channels, dec->channel_layout); av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream " "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name); } return 1; } static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output) { AVFrame *decoded_frame; AVCodecContext *avctx = ist->st->codec; int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt); int i, ret, resample_changed; if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame())) return AVERROR(ENOMEM); else avcodec_get_frame_defaults(ist->decoded_frame); decoded_frame = ist->decoded_frame; ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt); if (ret < 0) { return ret; } if (!*got_output) { /* no audio frame */ if (!pkt->size) for (i = 0; i < ist->nb_filters; i++) av_buffersrc_buffer(ist->filters[i]->filter, NULL); return ret; } /* if the decoder provides a pts, use it instead of the last packet pts. the decoder could be delaying output by a packet or more. */ if (decoded_frame->pts != AV_NOPTS_VALUE) ist->next_dts = decoded_frame->pts; else if (pkt->pts != AV_NOPTS_VALUE) { decoded_frame->pts = pkt->pts; pkt->pts = AV_NOPTS_VALUE; } // preprocess audio (volume) if (audio_volume != 256) { int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps; void *samples = decoded_frame->data[0]; switch (avctx->sample_fmt) { case AV_SAMPLE_FMT_U8: { uint8_t *volp = samples; for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) { int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128; *volp++ = av_clip_uint8(v); } break; } case AV_SAMPLE_FMT_S16: { int16_t *volp = samples; for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) { int v = ((*volp) * audio_volume + 128) >> 8; *volp++ = av_clip_int16(v); } break; } case AV_SAMPLE_FMT_S32: { int32_t *volp = samples; for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) { int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8); *volp++ = av_clipl_int32(v); } break; } case AV_SAMPLE_FMT_FLT: { float *volp = samples; float scale = audio_volume / 256.f; for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) { *volp++ *= scale; } break; } case AV_SAMPLE_FMT_DBL: { double *volp = samples; double scale = audio_volume / 256.; for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) { *volp++ *= scale; } break; } default: av_log(NULL, AV_LOG_FATAL, "Audio volume adjustment on sample format %s is not supported.\n", av_get_sample_fmt_name(ist->st->codec->sample_fmt)); exit_program(1); } } rate_emu_sleep(ist); resample_changed = ist->resample_sample_fmt != decoded_frame->format || ist->resample_channels != avctx->channels || ist->resample_channel_layout != decoded_frame->channel_layout || ist->resample_sample_rate != decoded_frame->sample_rate; if (resample_changed) { char layout1[64], layout2[64]; if (!guess_input_channel_layout(ist)) { av_log(NULL, AV_LOG_FATAL, "Unable to find default channel " "layout for Input Stream #%d.%d\n", ist->file_index, ist->st->index); exit_program(1); } decoded_frame->channel_layout = avctx->channel_layout; av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels, ist->resample_channel_layout); av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels, decoded_frame->channel_layout); av_log(NULL, AV_LOG_INFO, "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n", ist->file_index, ist->st->index, ist->resample_sample_rate, av_get_sample_fmt_name(ist->resample_sample_fmt), ist->resample_channels, layout1, decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format), avctx->channels, layout2); ist->resample_sample_fmt = decoded_frame->format; ist->resample_sample_rate = decoded_frame->sample_rate; ist->resample_channel_layout = decoded_frame->channel_layout; ist->resample_channels = avctx->channels; for (i = 0; i < nb_filtergraphs; i++) if (ist_in_filtergraph(filtergraphs[i], ist) && configure_filtergraph(filtergraphs[i]) < 0) { av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n"); exit_program(1); } } if (decoded_frame->pts != AV_NOPTS_VALUE) decoded_frame->pts = av_rescale_q(decoded_frame->pts, ist->st->time_base, (AVRational){1, ist->st->codec->sample_rate}); for (i = 0; i < ist->nb_filters; i++) av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame); return ret; } static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output) { AVFrame *decoded_frame; void *buffer_to_free = NULL; int i, ret = 0, resample_changed; float quality; if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame())) return AVERROR(ENOMEM); else avcodec_get_frame_defaults(ist->decoded_frame); decoded_frame = ist->decoded_frame; ret = avcodec_decode_video2(ist->st->codec, decoded_frame, got_output, pkt); if (ret < 0) return ret; quality = same_quant ? decoded_frame->quality : 0; if (!*got_output) { /* no picture yet */ if (!pkt->size) for (i = 0; i < ist->nb_filters; i++) av_buffersrc_buffer(ist->filters[i]->filter, NULL); return ret; } decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts, decoded_frame->pkt_dts); pkt->size = 0; pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free); rate_emu_sleep(ist); if (ist->st->sample_aspect_ratio.num) decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio; resample_changed = ist->resample_width != decoded_frame->width || ist->resample_height != decoded_frame->height || ist->resample_pix_fmt != decoded_frame->format; if (resample_changed) { av_log(NULL, AV_LOG_INFO, "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n", ist->file_index, ist->st->index, ist->resample_width, ist->resample_height, av_get_pix_fmt_name(ist->resample_pix_fmt), decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format)); ist->resample_width = decoded_frame->width; ist->resample_height = decoded_frame->height; ist->resample_pix_fmt = decoded_frame->format; for (i = 0; i < nb_filtergraphs; i++) if (ist_in_filtergraph(filtergraphs[i], ist) && configure_filtergraph(filtergraphs[i]) < 0) { av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n"); exit_program(1); } } for (i = 0; i < ist->nb_filters; i++) { // XXX what an ugly hack if (ist->filters[i]->graph->nb_outputs == 1) ist->filters[i]->graph->outputs[0]->ost->last_quality = quality; if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) { FrameBuffer *buf = decoded_frame->opaque; AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays( decoded_frame->data, decoded_frame->linesize, AV_PERM_READ | AV_PERM_PRESERVE, ist->st->codec->width, ist->st->codec->height, ist->st->codec->pix_fmt); avfilter_copy_frame_props(fb, decoded_frame); fb->buf->priv = buf; fb->buf->free = filter_release_buffer; buf->refcount++; av_buffersrc_buffer(ist->filters[i]->filter, fb); } else av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame); } av_free(buffer_to_free); return ret; } static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output) { AVSubtitle subtitle; int i, ret = avcodec_decode_subtitle2(ist->st->codec, &subtitle, got_output, pkt); if (ret < 0) return ret; if (!*got_output) return ret; rate_emu_sleep(ist); for (i = 0; i < nb_output_streams; i++) { OutputStream *ost = output_streams[i]; if (!check_output_constraints(ist, ost) || !ost->encoding_needed) continue; do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts); } avsubtitle_free(&subtitle); return ret; } /* pkt = NULL means EOF (needed to flush decoder buffers) */ static int output_packet(InputStream *ist, const AVPacket *pkt) { int i; int got_output; AVPacket avpkt; if (ist->next_dts == AV_NOPTS_VALUE) ist->next_dts = ist->last_dts; if (pkt == NULL) { /* EOF handling */ av_init_packet(&avpkt); avpkt.data = NULL; avpkt.size = 0; goto handle_eof; } else { avpkt = *pkt; } if (pkt->dts != AV_NOPTS_VALUE) ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q); // while we have more to decode or while the decoder did output something on EOF while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) { int ret = 0; handle_eof: ist->last_dts = ist->next_dts; if (avpkt.size && avpkt.size != pkt->size) { av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING, "Multiple frames in a packet from stream %d\n", pkt->stream_index); ist->showed_multi_packet_warning = 1; } switch (ist->st->codec->codec_type) { case AVMEDIA_TYPE_AUDIO: ret = decode_audio (ist, &avpkt, &got_output); break; case AVMEDIA_TYPE_VIDEO: ret = decode_video (ist, &avpkt, &got_output); if (avpkt.duration) ist->next_dts += av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q); else if (ist->st->avg_frame_rate.num) ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate), AV_TIME_BASE_Q); else if (ist->st->codec->time_base.num != 0) { int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame; ist->next_dts += av_rescale_q(ticks, ist->st->codec->time_base, AV_TIME_BASE_Q); } break; case AVMEDIA_TYPE_SUBTITLE: ret = transcode_subtitles(ist, &avpkt, &got_output); break; default: return -1; } if (ret < 0) return ret; // touch data and size only if not EOF if (pkt) { avpkt.data += ret; avpkt.size -= ret; } if (!got_output) { continue; } } /* handle stream copy */ if (!ist->decoding_needed) { rate_emu_sleep(ist); ist->last_dts = ist->next_dts; switch (ist->st->codec->codec_type) { case AVMEDIA_TYPE_AUDIO: ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) / ist->st->codec->sample_rate; break; case AVMEDIA_TYPE_VIDEO: if (ist->st->codec->time_base.num != 0) { int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame; ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->time_base.num * ticks) / ist->st->codec->time_base.den; } break; } } for (i = 0; pkt && i < nb_output_streams; i++) { OutputStream *ost = output_streams[i]; if (!check_output_constraints(ist, ost) || ost->encoding_needed) continue; do_streamcopy(ist, ost, pkt); } return 0; } static void print_sdp(void) { char sdp[2048]; int i; AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files); if (!avc) exit_program(1); for (i = 0; i < nb_output_files; i++) avc[i] = output_files[i]->ctx; av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp)); printf("SDP:\n%s\n", sdp); fflush(stdout); av_freep(&avc); } static int init_input_stream(int ist_index, char *error, int error_len) { int i; InputStream *ist = input_streams[ist_index]; if (ist->decoding_needed) { AVCodec *codec = ist->dec; if (!codec) { snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d", ist->st->codec->codec_id, ist->file_index, ist->st->index); return AVERROR(EINVAL); } /* update requested sample format for the decoder based on the corresponding encoder sample format */ for (i = 0; i < nb_output_streams; i++) { OutputStream *ost = output_streams[i]; if (ost->source_index == ist_index) { update_sample_fmt(ist->st->codec, codec, ost->st->codec); break; } } if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) { ist->st->codec->get_buffer = codec_get_buffer; ist->st->codec->release_buffer = codec_release_buffer; ist->st->codec->opaque = &ist->buffer_pool; } if (!av_dict_get(ist->opts, "threads", NULL, 0)) av_dict_set(&ist->opts, "threads", "auto", 0); if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) { snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d", ist->file_index, ist->st->index); return AVERROR(EINVAL); } assert_codec_experimental(ist->st->codec, 0); assert_avoptions(ist->opts); } ist->last_dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0; ist->next_dts = AV_NOPTS_VALUE; init_pts_correction(&ist->pts_ctx); ist->is_start = 1; return 0; } static InputStream *get_input_stream(OutputStream *ost) { if (ost->source_index >= 0) return input_streams[ost->source_index]; if (ost->filter) { FilterGraph *fg = ost->filter->graph; int i; for (i = 0; i < fg->nb_inputs; i++) if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type) return fg->inputs[i]->ist; } return NULL; } static void parse_forced_key_frames(char *kf, OutputStream *ost, AVCodecContext *avctx) { char *p; int n = 1, i; int64_t t; for (p = kf; *p; p++) if (*p == ',') n++; ost->forced_kf_count = n; ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n); if (!ost->forced_kf_pts) { av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n"); exit_program(1); } p = kf; for (i = 0; i < n; i++) { char *next = strchr(p, ','); if (next) *next++ = 0; t = parse_time_or_die("force_key_frames", p, 1); ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base); p = next; } } static int transcode_init(void) { int ret = 0, i, j, k; AVFormatContext *oc; AVCodecContext *codec, *icodec; OutputStream *ost; InputStream *ist; char error[1024]; int want_sdp = 1; /* init framerate emulation */ for (i = 0; i < nb_input_files; i++) { InputFile *ifile = input_files[i]; if (ifile->rate_emu) for (j = 0; j < ifile->nb_streams; j++) input_streams[j + ifile->ist_index]->start = av_gettime(); } /* output stream init */ for (i = 0; i < nb_output_files; i++) { oc = output_files[i]->ctx; if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) { av_dump_format(oc, i, oc->filename, 1); av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i); return AVERROR(EINVAL); } } /* init complex filtergraphs */ for (i = 0; i < nb_filtergraphs; i++) if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0) return ret; /* for each output stream, we compute the right encoding parameters */ for (i = 0; i < nb_output_streams; i++) { ost = output_streams[i]; oc = output_files[ost->file_index]->ctx; ist = get_input_stream(ost); if (ost->attachment_filename) continue; codec = ost->st->codec; if (ist) { icodec = ist->st->codec; ost->st->disposition = ist->st->disposition; codec->bits_per_raw_sample = icodec->bits_per_raw_sample; codec->chroma_sample_location = icodec->chroma_sample_location; } if (ost->stream_copy) { uint64_t extra_size; av_assert0(ist && !ost->filter); extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE; if (extra_size > INT_MAX) { return AVERROR(EINVAL); } /* if stream_copy is selected, no need to decode or encode */ codec->codec_id = icodec->codec_id; codec->codec_type = icodec->codec_type; if (!codec->codec_tag) { if (!oc->oformat->codec_tag || av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id || av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0) codec->codec_tag = icodec->codec_tag; } codec->bit_rate = icodec->bit_rate; codec->rc_max_rate = icodec->rc_max_rate; codec->rc_buffer_size = icodec->rc_buffer_size; codec->field_order = icodec->field_order; codec->extradata = av_mallocz(extra_size); if (!codec->extradata) { return AVERROR(ENOMEM); } memcpy(codec->extradata, icodec->extradata, icodec->extradata_size); codec->extradata_size = icodec->extradata_size; if (!copy_tb) { codec->time_base = icodec->time_base; codec->time_base.num *= icodec->ticks_per_frame; av_reduce(&codec->time_base.num, &codec->time_base.den, codec->time_base.num, codec->time_base.den, INT_MAX); } else codec->time_base = ist->st->time_base; switch (codec->codec_type) { case AVMEDIA_TYPE_AUDIO: if (audio_volume != 256) { av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n"); exit_program(1); } codec->channel_layout = icodec->channel_layout; codec->sample_rate = icodec->sample_rate; codec->channels = icodec->channels; codec->frame_size = icodec->frame_size; codec->audio_service_type = icodec->audio_service_type; codec->block_align = icodec->block_align; break; case AVMEDIA_TYPE_VIDEO: codec->pix_fmt = icodec->pix_fmt; codec->width = icodec->width; codec->height = icodec->height; codec->has_b_frames = icodec->has_b_frames; if (!codec->sample_aspect_ratio.num) { codec->sample_aspect_ratio = ost->st->sample_aspect_ratio = ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio : ist->st->codec->sample_aspect_ratio.num ? ist->st->codec->sample_aspect_ratio : (AVRational){0, 1}; } break; case AVMEDIA_TYPE_SUBTITLE: codec->width = icodec->width; codec->height = icodec->height; break; case AVMEDIA_TYPE_DATA: case AVMEDIA_TYPE_ATTACHMENT: break; default: abort(); } } else { if (!ost->enc) { /* should only happen when a default codec is not present. */ snprintf(error, sizeof(error), "Automatic encoder selection " "failed for output stream #%d:%d. Default encoder for " "format %s is probably disabled. Please choose an " "encoder manually.\n", ost->file_index, ost->index, oc->oformat->name); ret = AVERROR(EINVAL); goto dump_format; } if (ist) ist->decoding_needed = 1; ost->encoding_needed = 1; /* * We want CFR output if and only if one of those is true: * 1) user specified output framerate with -r * 2) user specified -vsync cfr * 3) output format is CFR and the user didn't force vsync to * something else than CFR * * in such a case, set ost->frame_rate */ if (codec->codec_type == AVMEDIA_TYPE_VIDEO && !ost->frame_rate.num && ist && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & (AVFMT_NOTIMESTAMPS | AVFMT_VARIABLE_FPS))))) { ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1}; if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) { int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates); ost->frame_rate = ost->enc->supported_framerates[idx]; } } if (!ost->filter && (codec->codec_type == AVMEDIA_TYPE_VIDEO || codec->codec_type == AVMEDIA_TYPE_AUDIO)) { FilterGraph *fg; fg = init_simple_filtergraph(ist, ost); if (configure_filtergraph(fg)) { av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n"); exit(1); } } switch (codec->codec_type) { case AVMEDIA_TYPE_AUDIO: codec->sample_fmt = ost->filter->filter->inputs[0]->format; codec->sample_rate = ost->filter->filter->inputs[0]->sample_rate; codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout; codec->channels = av_get_channel_layout_nb_channels(codec->channel_layout); codec->time_base = (AVRational){ 1, codec->sample_rate }; break; case AVMEDIA_TYPE_VIDEO: codec->time_base = ost->filter->filter->inputs[0]->time_base; codec->width = ost->filter->filter->inputs[0]->w; codec->height = ost->filter->filter->inputs[0]->h; codec->sample_aspect_ratio = ost->st->sample_aspect_ratio = ost->frame_aspect_ratio ? // overridden by the -aspect cli option av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) : ost->filter->filter->inputs[0]->sample_aspect_ratio; codec->pix_fmt = ost->filter->filter->inputs[0]->format; if (codec->width != icodec->width || codec->height != icodec->height || codec->pix_fmt != icodec->pix_fmt) { codec->bits_per_raw_sample = 0; } if (ost->forced_keyframes) parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec); break; case AVMEDIA_TYPE_SUBTITLE: codec->time_base = (AVRational){1, 1000}; break; default: abort(); break; } /* two pass mode */ if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) { char logfilename[1024]; FILE *f; snprintf(logfilename, sizeof(logfilename), "%s-%d.log", pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX, i); if (!strcmp(ost->enc->name, "libx264")) { av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE); } else { if (codec->flags & CODEC_FLAG_PASS1) { f = fopen(logfilename, "wb"); if (!f) { av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno)); exit_program(1); } ost->logfile = f; } else { char *logbuffer; size_t logbuffer_size; if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) { av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n", logfilename); exit_program(1); } codec->stats_in = logbuffer; } } } } } /* open each encoder */ for (i = 0; i < nb_output_streams; i++) { ost = output_streams[i]; if (ost->encoding_needed) { AVCodec *codec = ost->enc; AVCodecContext *dec = NULL; if ((ist = get_input_stream(ost))) dec = ist->st->codec; if (dec && dec->subtitle_header) { ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size); if (!ost->st->codec->subtitle_header) { ret = AVERROR(ENOMEM); goto dump_format; } memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size); ost->st->codec->subtitle_header_size = dec->subtitle_header_size; } if (!av_dict_get(ost->opts, "threads", NULL, 0)) av_dict_set(&ost->opts, "threads", "auto", 0); if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) { snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height", ost->file_index, ost->index); ret = AVERROR(EINVAL); goto dump_format; } assert_codec_experimental(ost->st->codec, 1); assert_avoptions(ost->opts); if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000) av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low." "It takes bits/s as argument, not kbits/s\n"); extra_size += ost->st->codec->extradata_size; if (ost->st->codec->me_threshold) input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV; } } /* init input streams */ for (i = 0; i < nb_input_streams; i++) if ((ret = init_input_stream(i, error, sizeof(error))) < 0) goto dump_format; /* discard unused programs */ for (i = 0; i < nb_input_files; i++) { InputFile *ifile = input_files[i]; for (j = 0; j < ifile->ctx->nb_programs; j++) { AVProgram *p = ifile->ctx->programs[j]; int discard = AVDISCARD_ALL; for (k = 0; k < p->nb_stream_indexes; k++) if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) { discard = AVDISCARD_DEFAULT; break; } p->discard = discard; } } /* open files and write file headers */ for (i = 0; i < nb_output_files; i++) { oc = output_files[i]->ctx; oc->interrupt_callback = int_cb; if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) { char errbuf[128]; const char *errbuf_ptr = errbuf; if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0) errbuf_ptr = strerror(AVUNERROR(ret)); snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr); ret = AVERROR(EINVAL); goto dump_format; } assert_avoptions(output_files[i]->opts); if (strcmp(oc->oformat->name, "rtp")) { want_sdp = 0; } } dump_format: /* dump the file output parameters - cannot be done before in case of stream copy */ for (i = 0; i < nb_output_files; i++) { av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1); } /* dump the stream mapping */ av_log(NULL, AV_LOG_INFO, "Stream mapping:\n"); for (i = 0; i < nb_input_streams; i++) { ist = input_streams[i]; for (j = 0; j < ist->nb_filters; j++) { if (ist->filters[j]->graph->graph_desc) { av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s", ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?", ist->filters[j]->name); if (nb_filtergraphs > 1) av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index); av_log(NULL, AV_LOG_INFO, "\n"); } } } for (i = 0; i < nb_output_streams; i++) { ost = output_streams[i]; if (ost->attachment_filename) { /* an attached file */ av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n", ost->attachment_filename, ost->file_index, ost->index); continue; } if (ost->filter && ost->filter->graph->graph_desc) { /* output from a complex graph */ av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name); if (nb_filtergraphs > 1) av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index); av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index, ost->index, ost->enc ? ost->enc->name : "?"); continue; } av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d", input_streams[ost->source_index]->file_index, input_streams[ost->source_index]->st->index, ost->file_index, ost->index); if (ost->sync_ist != input_streams[ost->source_index]) av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]", ost->sync_ist->file_index, ost->sync_ist->st->index); if (ost->stream_copy) av_log(NULL, AV_LOG_INFO, " (copy)"); else av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ? input_streams[ost->source_index]->dec->name : "?", ost->enc ? ost->enc->name : "?"); av_log(NULL, AV_LOG_INFO, "\n"); } if (ret) { av_log(NULL, AV_LOG_ERROR, "%s\n", error); return ret; } if (want_sdp) { print_sdp(); } return 0; } /** * @return 1 if there are still streams where more output is wanted, * 0 otherwise */ static int need_output(void) { int i; for (i = 0; i < nb_output_streams; i++) { OutputStream *ost = output_streams[i]; OutputFile *of = output_files[ost->file_index]; AVFormatContext *os = output_files[ost->file_index]->ctx; if (ost->is_past_recording_time || (os->pb && avio_tell(os->pb) >= of->limit_filesize)) continue; if (ost->frame_number >= ost->max_frames) { int j; for (j = 0; j < of->ctx->nb_streams; j++) output_streams[of->ost_index + j]->is_past_recording_time = 1; continue; } return 1; } return 0; } static InputFile *select_input_file(void) { InputFile *ifile = NULL; int64_t ipts_min = INT64_MAX; int i; for (i = 0; i < nb_input_streams; i++) { InputStream *ist = input_streams[i]; int64_t ipts = ist->last_dts; if (ist->discard || input_files[ist->file_index]->eagain) continue; if (!input_files[ist->file_index]->eof_reached) { if (ipts < ipts_min) { ipts_min = ipts; ifile = input_files[ist->file_index]; } } } return ifile; } #if HAVE_PTHREADS static void *input_thread(void *arg) { InputFile *f = arg; int ret = 0; while (!transcoding_finished && ret >= 0) { AVPacket pkt; ret = av_read_frame(f->ctx, &pkt); if (ret == AVERROR(EAGAIN)) { av_usleep(10000); ret = 0; continue; } else if (ret < 0) break; pthread_mutex_lock(&f->fifo_lock); while (!av_fifo_space(f->fifo)) pthread_cond_wait(&f->fifo_cond, &f->fifo_lock); av_dup_packet(&pkt); av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL); pthread_mutex_unlock(&f->fifo_lock); } f->finished = 1; return NULL; } static void free_input_threads(void) { int i; if (nb_input_files == 1) return; transcoding_finished = 1; for (i = 0; i < nb_input_files; i++) { InputFile *f = input_files[i]; AVPacket pkt; if (!f->fifo || f->joined) continue; pthread_mutex_lock(&f->fifo_lock); while (av_fifo_size(f->fifo)) { av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL); av_free_packet(&pkt); } pthread_cond_signal(&f->fifo_cond); pthread_mutex_unlock(&f->fifo_lock); pthread_join(f->thread, NULL); f->joined = 1; while (av_fifo_size(f->fifo)) { av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL); av_free_packet(&pkt); } av_fifo_free(f->fifo); } } static int init_input_threads(void) { int i, ret; if (nb_input_files == 1) return 0; for (i = 0; i < nb_input_files; i++) { InputFile *f = input_files[i]; if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket)))) return AVERROR(ENOMEM); pthread_mutex_init(&f->fifo_lock, NULL); pthread_cond_init (&f->fifo_cond, NULL); if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) return AVERROR(ret); } return 0; } static int get_input_packet_mt(InputFile *f, AVPacket *pkt) { int ret = 0; pthread_mutex_lock(&f->fifo_lock); if (av_fifo_size(f->fifo)) { av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL); pthread_cond_signal(&f->fifo_cond); } else { if (f->finished) ret = AVERROR_EOF; else ret = AVERROR(EAGAIN); } pthread_mutex_unlock(&f->fifo_lock); return ret; } #endif static int get_input_packet(InputFile *f, AVPacket *pkt) { #if HAVE_PTHREADS if (nb_input_files > 1) return get_input_packet_mt(f, pkt); #endif return av_read_frame(f->ctx, pkt); } static int got_eagain(void) { int i; for (i = 0; i < nb_input_files; i++) if (input_files[i]->eagain) return 1; return 0; } static void reset_eagain(void) { int i; for (i = 0; i < nb_input_files; i++) input_files[i]->eagain = 0; } /* * The following code is the main loop of the file converter */ static int transcode(void) { int ret, i; AVFormatContext *is, *os; OutputStream *ost; InputStream *ist; int64_t timer_start; ret = transcode_init(); if (ret < 0) goto fail; av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n"); term_init(); timer_start = av_gettime(); #if HAVE_PTHREADS if ((ret = init_input_threads()) < 0) goto fail; #endif while (!received_sigterm) { InputFile *ifile; AVPacket pkt; /* check if there's any stream where output is still needed */ if (!need_output()) { av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n"); break; } /* select the stream that we must read now */ ifile = select_input_file(); /* if none, if is finished */ if (!ifile) { if (got_eagain()) { reset_eagain(); av_usleep(10000); continue; } av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n"); break; } is = ifile->ctx; ret = get_input_packet(ifile, &pkt); if (ret == AVERROR(EAGAIN)) { ifile->eagain = 1; continue; } if (ret < 0) { if (ret != AVERROR_EOF) { print_error(is->filename, ret); if (exit_on_error) exit_program(1); } ifile->eof_reached = 1; for (i = 0; i < ifile->nb_streams; i++) { ist = input_streams[ifile->ist_index + i]; if (ist->decoding_needed) output_packet(ist, NULL); } if (opt_shortest) break; else continue; } reset_eagain(); if (do_pkt_dump) { av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump, is->streams[pkt.stream_index]); } /* the following test is needed in case new streams appear dynamically in stream : we ignore them */ if (pkt.stream_index >= ifile->nb_streams) goto discard_packet; ist = input_streams[ifile->ist_index + pkt.stream_index]; if (ist->discard) goto discard_packet; if (pkt.dts != AV_NOPTS_VALUE) pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base); if (pkt.pts != AV_NOPTS_VALUE) pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base); if (pkt.pts != AV_NOPTS_VALUE) pkt.pts *= ist->ts_scale; if (pkt.dts != AV_NOPTS_VALUE) pkt.dts *= ist->ts_scale; if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && (is->iformat->flags & AVFMT_TS_DISCONT)) { int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q); int64_t delta = pkt_dts - ist->next_dts; if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) { ifile->ts_offset -= delta; av_log(NULL, AV_LOG_DEBUG, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, ifile->ts_offset); pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base); if (pkt.pts != AV_NOPTS_VALUE) pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base); } } if (output_packet(ist, &pkt) < 0 || poll_filters() < 0) { av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n", ist->file_index, ist->st->index); if (exit_on_error) exit_program(1); av_free_packet(&pkt); continue; } discard_packet: av_free_packet(&pkt); /* dump report by using the output first video and audio streams */ print_report(0, timer_start); } #if HAVE_PTHREADS free_input_threads(); #endif /* at the end of stream, we must flush the decoder buffers */ for (i = 0; i < nb_input_streams; i++) { ist = input_streams[i]; if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) { output_packet(ist, NULL); } } poll_filters(); flush_encoders(); term_exit(); /* write the trailer if needed and close file */ for (i = 0; i < nb_output_files; i++) { os = output_files[i]->ctx; av_write_trailer(os); } /* dump report by using the first video and audio streams */ print_report(1, timer_start); /* close each encoder */ for (i = 0; i < nb_output_streams; i++) { ost = output_streams[i]; if (ost->encoding_needed) { av_freep(&ost->st->codec->stats_in); avcodec_close(ost->st->codec); } } /* close each decoder */ for (i = 0; i < nb_input_streams; i++) { ist = input_streams[i]; if (ist->decoding_needed) { avcodec_close(ist->st->codec); } } /* finished ! */ ret = 0; fail: #if HAVE_PTHREADS free_input_threads(); #endif if (output_streams) { for (i = 0; i < nb_output_streams; i++) { ost = output_streams[i]; if (ost) { if (ost->stream_copy) av_freep(&ost->st->codec->extradata); if (ost->logfile) { fclose(ost->logfile); ost->logfile = NULL; } av_freep(&ost->st->codec->subtitle_header); av_free(ost->forced_kf_pts); av_dict_free(&ost->opts); } } } return ret; } static int64_t getutime(void) { #if HAVE_GETRUSAGE struct rusage rusage; getrusage(RUSAGE_SELF, &rusage); return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec; #elif HAVE_GETPROCESSTIMES HANDLE proc; FILETIME c, e, k, u; proc = GetCurrentProcess(); GetProcessTimes(proc, &c, &e, &k, &u); return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10; #else return av_gettime(); #endif } static int64_t getmaxrss(void) { #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS struct rusage rusage; getrusage(RUSAGE_SELF, &rusage); return (int64_t)rusage.ru_maxrss * 1024; #elif HAVE_GETPROCESSMEMORYINFO HANDLE proc; PROCESS_MEMORY_COUNTERS memcounters; proc = GetCurrentProcess(); memcounters.cb = sizeof(memcounters); GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters)); return memcounters.PeakPagefileUsage; #else return 0; #endif } static void parse_cpuflags(int argc, char **argv, const OptionDef *options) { int idx = locate_option(argc, argv, options, "cpuflags"); if (idx && argv[idx + 1]) opt_cpuflags("cpuflags", argv[idx + 1]); } int main(int argc, char **argv) { OptionsContext o = { 0 }; int64_t ti; reset_options(&o); av_log_set_flags(AV_LOG_SKIP_REPEATED); parse_loglevel(argc, argv, options); avcodec_register_all(); #if CONFIG_AVDEVICE avdevice_register_all(); #endif avfilter_register_all(); av_register_all(); avformat_network_init(); show_banner(); parse_cpuflags(argc, argv, options); /* parse options */ parse_options(&o, argc, argv, options, opt_output_file); if (nb_output_files <= 0 && nb_input_files == 0) { show_usage(); av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name); exit_program(1); } /* file converter / grab */ if (nb_output_files <= 0) { fprintf(stderr, "At least one output file must be specified\n"); exit_program(1); } if (nb_input_files == 0) { av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n"); exit_program(1); } ti = getutime(); if (transcode() < 0) exit_program(1); ti = getutime() - ti; if (do_benchmark) { int maxrss = getmaxrss() / 1024; printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss); } exit_program(0); return 0; }