On 11/14/2017 02:18 PM, Carl Eugen Hoyos wrote: > 2017-11-14 19:02 GMT+01:00 Jerome Martinez <jer...@mediaarea.net>: >> On 12/11/2017 03:12, Carl Eugen Hoyos wrote: >>> - put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration); >>> + if (duration > 0) >>> + put_ebml_uint(pb, MATROSKA_ID_BLOCKDURATION, duration); >> >> In that case, the duration of the block is DefaultDuration (if it exists), >> completely different. >> Is it intended to say that a duration of 0 at this place means that the >> block has the default block duration if it exists? >> >> What is the use case for a duration of 0? > Iirc, pgs subtitles send an empty "frame" to reset / remove the > subtitle.
Correct, this is the source of these 0 duration pgs "subtitles". > >> (Note: the meaning of the a block duration of 0 is unclear to me, I'll ask >> on CELLAR mailing list to clarify that) > So maybe the issue is with mkvalidate? > > Carl Eugen > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel -- John GnuPG fingerprint: D0EC B3DB C372 D1F1 0B01 83F0 49F1 D7B2 60D4 D0F7
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