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avformat_find_stream_info: use fps_dts as last resort to determine duration

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Fixes long delay with some hardware generated h264 in ts

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-07-07 15:03:12 +02:00
parent 19d4163331
commit c7cfd4cce9
1 changed files with 9 additions and 0 deletions
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9
libavformat/utils.c
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@ -2829,6 +2829,15 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options)
if (st->avg_frame_rate.num > 0)
t = FFMAX(t, av_rescale_q(st->codec_info_nb_frames, av_inv_q(st->avg_frame_rate), AV_TIME_BASE_Q));
if ( t==0
&& st->codec_info_nb_frames>15
&& st->codec->codec_type == AVMEDIA_TYPE_VIDEO
&& ( !strcmp(ic->iformat->name, "mpeg") // this breaks some flvs thus use only for mpegps/ts for now (for ts we have a sample that needs it)
|| !strcmp(ic->iformat->name, "mpegts"))
&& st->info->fps_first_dts != AV_NOPTS_VALUE
&& st->info->fps_last_dts != AV_NOPTS_VALUE)
t = FFMAX(t, av_rescale_q(st->info->fps_last_dts - st->info->fps_first_dts, st->time_base, AV_TIME_BASE_Q));
if (t >= ic->max_analyze_duration) {
av_log(ic, AV_LOG_VERBOSE, "max_analyze_duration %d reached at %"PRId64" microseconds\n", ic->max_analyze_duration, t);
break;