[FFmpeg-trac] #4774(ffmpeg:new): Incompatibilities between XBMC/Kodi & mkvalidator relating to how FFmpeg muxes MKVs

FFmpeg trac at avcodec.org
Sun Aug 16 18:27:00 CEST 2015


#4774: Incompatibilities between XBMC/Kodi & mkvalidator relating to how FFmpeg
muxes MKVs
-------------------------------------+-------------------------------------
             Reporter:  Drag0nFly    |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  ffmpeg
              Version:  git-master   |               Resolution:
             Keywords:  mkv muxer    |               Blocked By:
  timecode chapter                   |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by Drag0nFly):

 It case it is of interest for comparison purposes, I did a new encode with
 a recent HandBrake version for the same segment, and did a mkvinfo -v -v
 -v on the resulting file:

 https://www.dropbox.com/s/ooszk0fg8qq8tzh/mkvinfo-vvv-handbrake-
 encode.txt?dl=0

 It is also employing lavf (Lavf56.1.0), but does not have the issue with
 mkvalidator or Kodi.

 {{{
 $ time mkvalidator /data/video/work/hot.shots.sample.handbrake.mkv
 WRN0E7: DisplayUnit seems to be pixels not aspect-ratio for Video track #1
 1918px width from 1918
 WRN0E7: DisplayUnit seems to be pixels not aspect-ratio for Video track #1
 1040px height from 1040
 mkvalidator 0.5.0: the file appears to be valid
         file created with Lavf56.1.0 / HandBrake 7401svn 2015081601

 real    0m45.576s
 user    0m0.513s
 sys     0m0.848s
 }}}

 mkvinfo -v -v -v for a recent FFmpeg encode which produced the 'ERR0B1:
 Block at nnnnnnnnnn track #n is not a keyframe' error:
 (in addition to the cue warning)

 https://www.dropbox.com/s/4ft2id9p6csyvbn/mkvinfo-vvv-videodrome.txt?dl=0

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4774#comment:17>
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