[MPlayer-dev-eng] [PATCH] Fix hang on demux of matroska files with 0byte-ints using 'mkv' demuxer

[Sebastian Hagen]

Hello *,

Mplayer's 'mkv' matroska file demuxer has a bug preventing it from
parsing integers with a length of 0 bytes correctly, even though those
are valid according to the Matroska specs[1]. Thus, attempting to play
mkv files containing such integers without explicitly specifying
'-demuxer lavf' will result in an mplayer hang on demux.

I'm attaching a small MKV file (without any actual media streams)
demonstrating the bug as well as a patch that fixes it for me.

[1] <http://www.matroska.org/technical/specs/rfc/index.html>, section 2.4.

Sebastian Hagen
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