[issue2650] id3v2 2.3 unsynchronized not working for MCDI tags

Anton Khirnov added the comment: fixed in bca6dee386307e4f3646632d98a9db87ce9de249 not much can be done about the file being broken though -- status: new -> closed substatus: new -> fixed __ Libav issue tracker

[issue2650] id3v2 2.3 unsynchronized not working for MCDI tags

Vladimir added the comment: I believe that issue https://roundup.ffmpeg.org/issue2649 is linked to this problem. FFmpeg issue tracker

[issue2650] id3v2 2.3 unsynchronized not working for MCDI tags

Vladimir added the comment: >From various sources, it looks like, tlen is syncsafe in 2.4 (but not 2.3) Which is the source of the problem. FFmpeg issue tracker _

[issue2650] id3v2 2.3 unsynchronized not working for MCDI tags

New submission from Vladimir : In a sample file, MCDI tag, has 142 bytes tag length. And it has FF 00 FF at the end of the tag. It's not "synchronized", and last FF is read as start of next tag. Causing tlen to be very large, which leads to abort, and them mp3 vbr headers are not read. File 'b.