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avformat/flvenc: fix ticket 5976 and use old commit

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mythtv have problem with non-seekable dont write duration and filesize
and there have problem with some other server and player with 0 value
duation and filesize.
So add a flv flags to fix the ticket and make a choose for users.

Signed-off-by: Steven Liu <lq@chinaffmpeg.org>
This commit is contained in:
Steven Liu 2016-11-26 08:52:19 +08:00
parent da34e4e132
commit ee24c8ad01
2 changed files with 11 additions and 4 deletions
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4
doc/muxers.texi
View File

@ -151,6 +151,10 @@ Disable sequence end tag.
@item no_metadata
Disable metadata tag.
@item no_duration_filesize
Disable duration and filesize in metadata when they are equal to zero
at the end of stream. (Be used to non-seekable living stream).
@item add_keyframe_index
Used to facilitate seeking; particularly for HTTP pseudo streaming.
@end table

11
libavformat/flvenc.c
View File

@ -68,6 +68,7 @@ typedef enum {
FLV_NO_SEQUENCE_END = (1 << 1),
FLV_ADD_KEYFRAME_INDEX = (1 << 2),
FLV_NO_METADATA = (1 << 3),
FLV_NO_DURATION_FILESIZE = (1 << 4),
} FLVFlags;
typedef struct FLVFileposition {
@ -269,6 +270,7 @@ static void write_metadata(AVFormatContext *s, unsigned int ts)
{
AVIOContext *pb = s->pb;
FLVContext *flv = s->priv_data;
int write_duration_filesize = !(flv->flags & FLV_NO_DURATION_FILESIZE);
int metadata_count = 0;
int64_t metadata_count_pos;
AVDictionaryEntry *tag = NULL;
@ -292,12 +294,12 @@ static void write_metadata(AVFormatContext *s, unsigned int ts)
metadata_count = 4 * !!flv->video_par +
5 * !!flv->audio_par +
1 * !!flv->data_par;
if (pb->seekable) {
if (write_duration_filesize) {
metadata_count += 2; // +2 for duration and file size
}
avio_wb32(pb, metadata_count);
if (pb->seekable) {
if (write_duration_filesize) {
put_amf_string(pb, "duration");
flv->duration_offset = avio_tell(pb);
// fill in the guessed duration, it'll be corrected later if incorrect
@ -378,7 +380,7 @@ static void write_metadata(AVFormatContext *s, unsigned int ts)
metadata_count++;
}
if (pb->seekable) {
if (write_duration_filesize) {
put_amf_string(pb, "filesize");
flv->filesize_offset = avio_tell(pb);
put_amf_double(pb, 0); // delayed write
@ -844,7 +846,7 @@ end:
avio_seek(pb, flv->datasize_offset, SEEK_SET);
put_amf_double(pb, flv->datasize);
}
if (pb->seekable) {
if (!(flv->flags & FLV_NO_DURATION_FILESIZE)) {
/* update information */
if (avio_seek(pb, flv->duration_offset, SEEK_SET) < 0) {
av_log(s, AV_LOG_WARNING, "Failed to update header with correct duration.\n");
@ -1061,6 +1063,7 @@ static const AVOption options[] = {
{ "aac_seq_header_detect", "Put AAC sequence header based on stream data", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_AAC_SEQ_HEADER_DETECT}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "flvflags" },
{ "no_sequence_end", "disable sequence end for FLV", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_NO_SEQUENCE_END}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "flvflags" },
{ "no_metadata", "disable metadata for FLV", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_NO_METADATA}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "flvflags" },
{ "no_duration_filesize", "disable duration and filesize zero value metadata for FLV", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_NO_DURATION_FILESIZE}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "flvflags" },
{ "add_keyframe_index", "Add keyframe index metadata", 0, AV_OPT_TYPE_CONST, {.i64 = FLV_ADD_KEYFRAME_INDEX}, INT_MIN, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, "flvflags" },
{ NULL },
};