[FFmpeg-devel] [RFC] Format of packets for text subtitles

Nicolas George nicolas.george at normalesup.org
Fri Jun 8 12:02:27 CEST 2012

Le decadi 20 prairial, an CCXX, Philip Langdale a écrit :
> MPEG4 Timed Text is also durationless, and the standard practice seems to
> be to insert an empty subtitle packet to clear out the subtitle at the end
> of the duration period. However, I note that its already the case that I
> see packets with the correct duration coming out of the demuxer - is mov
> already doing this to set the duration properly? or are mov subtitle
> streams not interleaved? I haven't looked in detail.

Can you point to a sample?

Unfortunately, I am afraid we will need to find a solution to be able to
remux from a format with no duration and an end marker to a format with


  Nicolas George

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