Opened 11 years ago

Closed 7 years ago

#2324 closed defect (fixed)

Duplicate First Frame

Reported by: BChap Owned by:
Priority: normal Component: avformat
Version: git-master Keywords: mov edts
Cc: Blocked By:
Blocking: Reproduced by developer: yes
Analyzed by developer: no


Summary of the bug:

When using ffmpeg to convert an h264 video stream from an mp4 to prores or mjpeg Quicktime, the first frame of video is duplicated in the result.

How to reproduce:

% ffmpeg -i test100.mp4 -c:v prores -an
ffmpeg version 1.1.git
git revision: faa0068
built on Mar  4 2013 11:40:27

Attachments (1)

test100.mp4 (433.1 KB ) - added by BChap 11 years ago.

Download all attachments as: .zip

Change History (6)

by BChap, 11 years ago

Attachment: test100.mp4 added

comment:1 by Carl Eugen Hoyos, 11 years ago

Keywords: mov added; mp4 removed
Resolution: duplicate
Status: newclosed

(For future tickets: Please always add complete, uncut console output together with the command line.)

FFmpeg's mov muxer does not support variable frame rate output, it therefore has to duplicate frames to produce a constant frame rate.

Several tickets are open that contain references to this limitation, in any case it is known.

comment:2 by burek, 11 years ago

It might help to start answering to people with "Thank you for your time spent to report this issue to us", rather then to just close it, not even mentioning what is it the duplicate of...

comment:3 by Carl Eugen Hoyos, 11 years ago

Resolution: duplicate
Status: closedreopened

There may actually be an issue, possibly the same as in ticket #2337

comment:4 by Elon Musk, 8 years ago

Reproduced by developer: set
Status: reopenedopen

comment:5 by Carl Eugen Hoyos, 7 years ago

Component: undeterminedavformat
Keywords: edts added
Resolution: fixed
Status: openclosed
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