[FFmpeg-devel] [PATCH 0/7] matroska: support of timecode

[Jerome Martinez via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>]

This patch series adds support of timecode in Matroska files, specs are at:
https://github.com/ietf-wg-cellar/matroska-specification/blob/master/cellar-codec/block_additional_mappings/smpte-st12-1-timecode.md

As ST 12-1 support was already partially implemented, using 32 bits 
rather than 64 bits (binary groups were not stored), the ST 12-1 side 
data format was changed from 32 bits to 64 bits rather than introducing 
another ST  12-1 side data internal "format", this may break code using 
it but not in the main repo (I found nothing using it in the main repo), 
is it fine?
If we keep internally 32 bits for ST 12-1, any non zero timecode binary 
group stored in MKVs would be trashed.

The first 3 patches refactor BlockAddition support in MKV encoder in 
order to have it more versatile
The 2 next patches adapt decklink_dec for writing 64 bit timecodes in 
side data rather than 32 bit timecodes
The last 2 patches adds timecode support in Matroska

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