[FFmpeg-devel] matroska file hits eof on any seek

Pavel Koshevoy pkoshevoy at gmail.com
Fri Feb 17 18:34:17 CET 2012

On 2/17/2012 10:23 AM, Reimar Döffinger wrote:
> On Fri, Feb 17, 2012 at 10:20:58AM -0700, Pavel Koshevoy wrote:
>> On 2/17/2012 2:45 AM, Don Moir wrote:
>>> This file is probably a "bad" file.
>> Yes, it is.  If you look at it with mkvinfo GUI you'll see that
>> there are no keyframes there.
>> You can fix it using yamkaRemux, make sure to pass the -fixKeyFlag
>> option.  With this option yamkaRemux parses H.264 tracks and looks
>> for IDR nal_init_type.  It uses that to fix the Matroska SimpleBlock
>> keyframe flag.
> Have you tested that? Because if that's the only thing
> it does, it is probably the kind of application that
> creates those broken files.

Yes, I downloaded the source file, remuxed with yamkaRemux, and was able 
to play/seek it with my ffmpeg based player.  According to mkvinfo that 
file was made with mkvmerge v2.7.0, not yamka.


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