[FFmpeg-trac] #11055(undetermined:new): "showinfo", "-show_frames": bad PTS, where "framecrc" had expected; plus inconsistent playback

FFmpeg trac at avcodec.org
Sun Jun 16 06:30:36 EEST 2024


#11055: "showinfo", "-show_frames": bad PTS, where "framecrc" had expected; plus
inconsistent playback
-------------------------------------+-------------------------------------
             Reporter:  markfilipak  |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  important    |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:  vf_showinfo  |               Blocked By:
  ffprobe -show_frames OGOP          |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by MasterQuestionable):

 ͏    FF-series tools' output provides a good reference point:
 ͏    Most players are based on which, regardless; it would be what
 attained during typical playback.
 ͏    .
 ͏    Also the primary purpose is to diagnose FFmpeg: without testing, how
 could?

 ͏    As mentioned: the timestamps appeared seriously wrong.
 ͏    However there appears to be somehow ignored intermediate frames:
 presumably due to OGOP.

 ͏    Precisely, all frames may be free of DTS.
 ͏    However they do exist in some implementations.
 ͏    .
 ͏    Regardless, what's parsed by FFprobe indeed contains interpolated
 data. (that not really exist, but implied by other data)

 ͏    Don't haste to make early judgment.
 ͏    Make more analysis on relevant technologies.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/11055#comment:77>
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