[FFmpeg-trac] #3631(undetermined:new): Aspect ratio change in the middle of a video stream
FFmpeg
trac at avcodec.org
Sat May 10 17:40:01 CEST 2014
#3631: Aspect ratio change in the middle of a video stream
-------------------------------------+-------------------------------------
Reporter: mar | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: git-master | undetermined
Keywords: aspect | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
-------------------------------------+-------------------------------------
Comment (by mar):
Yes, you are right. I have not used ffplay to view jpeg before, and it
displays the image correctly.
However, if I view the jpeg in another viewer (e.g. Firefox or Photoshop
or the Windows default image viewer) it does not display correctly. And
also the pixel size is not correct. It seems that the information of the
aspect ratio is preserved in the jpeg file and that ffplay "stretches" the
image when it is displayed (stretching also causes a bit of quality loss).
But the image is not "stretched" by other viewers. Is this saving of the
aspect ratio in the jpeg a "proprietary" feature used by ffmpeg or are all
those other vierwers "buggy"?
--
Ticket URL: <https://trac.ffmpeg.org/ticket/3631#comment:7>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list