On 15-12-2018 07:44 PM, Paul B Mahol wrote:
On 12/15/18, Gyan <[email protected]> wrote:
Some playlists contain a sequence of separately produced MPEG-TS files.
So, there's a timestamp reset when each new segment is received. At this
point, the timestamp code in libavformat's mux.c simply increments the
output timestamp by one when this happens. Unless the timebase
resolution is 1/fps, this produces an unsound file. Workaround is to
extract the individual streams and remux using mp4box.
ffmpeg -i downloaded.mp4 -c copy video.h264
ffmpeg -i downloaded.mp4 -c copy audio.aac
mp4box -add video.h264 -add audio.aac -new fixed.mp4
Can't ffmpeg be used in last step too?
I avoid it due to PTS generation bug for H264 streams with B-frames,
specifically hierarchical B-frames.
Gyan
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