[Matroska-devel] mkvalidator cluster/cues validation

therealmsj at gmail.com therealmsj at gmail.com
Wed Aug 3 09:20:56 CEST 2011

mkvalidator complains about "first block for video track # not being a 
key-frame". Its only a warning but why complain about
something thats totally valid - in this case the CueBlockNumber points at 
the key-frame block. I could understand the warning if the
CueBlockNumber element had not been present or was pointing at the wrong 

what seems to be missing from mkvalidator is a "cues key-validation" - if 
the first block is not a video key-frame and CueBlockNumber is not
present it should generate a warning. A warning because there does not seem 
to be any requirement that cues should only contain references
to key-frames. Also, mkvalidator seems to ignore the CueBlockNumber - 
writing a wrong block number does not generate any error.

please comment.

Thanks in advance


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