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| author | Michael Niedermayer <michaelni@gmx.at> | 2014-11-25 01:56:05 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-11-25 01:56:05 +0100 |
| commit | b83beb131f0d3fdb2d472665f5325f02aeac7d7e (patch) | |
| tree | 98b6ff4a93d05a92d97c416ed2796c03616d4497 /libavformat | |
| parent | 172d22a071b5ba932d365ec5e133bf387f5076ed (diff) | |
| parent | 40665d27e38e6a2f65037878202bd1a398c7683e (diff) | |
| download | ffmpeg-b83beb131f0d3fdb2d472665f5325f02aeac7d7e.tar.gz | |
Merge commit '40665d27e38e6a2f65037878202bd1a398c7683e'
* commit '40665d27e38e6a2f65037878202bd1a398c7683e':
flvdec: Document how the duration is retrieved at the end of the file
Conflicts:
libavformat/flvdec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/flvdec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index 1c70a72dec..17d1313d60 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -885,10 +885,14 @@ skip: if (s->pb->seekable && (!s->duration || s->duration == AV_NOPTS_VALUE) && !flv->searched_for_end) { int size; const int64_t pos = avio_tell(s->pb); + // Read the last 4 bytes of the file, this should be the size of the + // previous FLV tag. Use the timestamp of its payload as duration. int64_t fsize = avio_size(s->pb); retry_duration: avio_seek(s->pb, fsize - 4, SEEK_SET); size = avio_rb32(s->pb); + // Seek to the start of the last FLV tag at position (fsize - 4 - size) + // but skip the byte indicating the type. avio_seek(s->pb, fsize - 3 - size, SEEK_SET); if (size == avio_rb24(s->pb) + 11) { uint32_t ts = avio_rb24(s->pb); |