[FFmpeg-trac] #10181(undetermined:closed): Imprecise seeking in mp4 generated by ffmpeg.

FFmpeg trac at avcodec.org
Fri Feb 10 11:14:58 EET 2023


#10181: Imprecise seeking in mp4 generated by ffmpeg.
-------------------------------------+-------------------------------------
             Reporter:  Dale Curtis  |                    Owner:  (none)
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:  invalid
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by Balling):

 * status:  reopened => closed
 * resolution:   => invalid

Comment:

 >But I have a similar problem in VLC pausing, seeking to 0, then pressing
 E for next frame, I am still at TC 00:00:00:00.

 VLC is buggy as hell. It is not at all surprising, VLC does not even have
 step backward. mpv works correctly (it has . and , buttons to step forward
 and backward) and so does MPC-HC (Ctrl-Left, Ctrl-right).

 As for output25.mp4​ it works correctly: ffmpeg.exe -ss 00:00:00.01 -i
 C:\Users\ZAQU\Downloads\output25.mp4 -frames:v 1 out-b.png

 as for chrome it switches between 0.040 (1/25 is 0.04000) and 0.040001, so
 you need to find out why is that, but 1/25 is not actual number used in
 Chrome. (1/25).toFixed(69)
 '0.040000000000000000832667268468867405317723751068115234375000000000000'
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10181#comment:3>
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