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| author | Zhao Zhili <zhilizhao@tencent.com> | 2023-09-12 01:03:58 +0800 |
|---|---|---|
| committer | Zhao Zhili <zhilizhao@tencent.com> | 2023-09-14 18:49:51 +0800 |
| commit | a8d9da4c8b574dab4f35f4b6802f52b1bc0156cc (patch) | |
| tree | f7d76d0369bd5d384957bf47caddaa2b9cd75bc9 /doc | |
| parent | 6434e440039910f12f7c08072b7db3c5e99c3025 (diff) | |
| download | ffmpeg-a8d9da4c8b574dab4f35f4b6802f52b1bc0156cc.tar.gz | |
avformat/mov: add interleaved_read option
For badly interleaved files, interleave packets from multiple tracks
at the demuxer level can trigger seeking back and forth, which can be
dramatically slow depending on the protocol. Demuxer level interleave
can be useless sometimes, e.g., reading mp4 via http and then
transcoding/remux to DASH. Disable this option when you don't need the
demuxer level interleave, and want to avoid the IO penalizes.
Co-authored-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/demuxers.texi | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/demuxers.texi b/doc/demuxers.texi index 2d33b47a56..ca1563abb0 100644 --- a/doc/demuxers.texi +++ b/doc/demuxers.texi @@ -779,6 +779,13 @@ cast to int32 are used to adjust onward dts. Unit is the track time scale. Range is 0 to UINT_MAX. Default is @code{UINT_MAX - 48000*10} which allows upto a 10 second dts correction for 48 kHz audio streams while accommodating 99.9% of @code{uint32} range. + +@item interleaved_read +Interleave packets from multiple tracks at demuxer level. For badly interleaved files, this prevents playback issues +caused by large gaps between packets in different tracks, as MOV/MP4 do not have packet placement requirements. +However, this can cause excessive seeking on very badly interleaved files, due to seeking between tracks, so disabling +it may prevent I/O issues, at the expense of playback. + @end table @subsection Audible AAX |