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2 633 tests/data/fate/matroska-zero-length-block.matroska
4 #media_type 0: subtitle
6 0, 1000, 1000, 2000, 5, 0x05b801df
7 0, 3300, 3300, 3700, 16, 0x300705b2
9 TAG:DESCRIPTION=This track uses header removal compression and has a Block of size zero before reversing it.