[FFmpeg-trac] #3328(undetermined:open): video "judder" issue noted after DVR-MS to MP4 conversion

FFmpeg trac at avcodec.org
Wed Jan 22 11:49:02 CET 2014


#3328: video "judder" issue noted after DVR-MS to MP4 conversion
-------------------------------------+-------------------------------------
             Reporter:  beteljuice   |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:
              Version:  git-master   |  undetermined
             Keywords:  regression   |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  1
-------------------------------------+-------------------------------------

Comment (by cehoyos):

 Replying to [comment:10 beteljuice]:
 > Using ffmpeg w/ git 633b90c, I found that the resulting output (as an
 .avi file) played back properly with no judder. However, I did note the
 following when playing back the files using Windows Media Player 11:
 >
 > - the audio on the .avi was quieter than the .dvr-ms (had to increase
 the volume to compensate)

 This seems completely unrelated.

 > - Using MediaInfo to evaluate the properties of each file, I found that
 both files showed a resolution of 720x480 and an aspect ratio of 16:9.
 However, the video stream for the .avi reported 59.940 fps, while the
 .dvr-ms reported 23.976fps.

 In which situation is this a problem?

 > - When playing the files in fullscreen, the height of the black bars
 above and below the .avi was less than the height of the black bars for
 the .dvr-ms. As an example: the spinning globe at the beginning of the
 .dvr-ms file is perfectly round, while the globe in the .avi file is oval
 (left and right sides of the globe pressed inwards).

 Is this reproducible with current git head?

--
Ticket URL: <https://trac.ffmpeg.org/ticket/3328#comment:15>
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