#7498: webm rotation metadata results in deformed output.
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Reporter: carl | Owner:
Type: defect | Status: closed
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: | Resolution: invalid
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
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Changes (by Gyan):
* status: reopened => closed
* resolution: => invalid
Comment:
I don't see any orientation metadata in the webm sample. ffmpeg reports a
1920x1080 raster with sample aspect ratio of 19:60 which should result in
a display raster of 608x1080 at 1x size.
FFmpeg will not automatically convert frames to square-pixel. It will
convey the SAR to the output format if it supports storing that attribute.
It's then up to the reading app to read and apply that value. For apps (or
formats) which don't do that, the workaround is to use Carl's suggested
filter syntax. I would add one thing, though: `-vf
scale=iw*sar:ih,setsar=1`. The setsar is added for safety, since the
computed value by scale may not be perfect unity.
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Ticket URL: <https://trac.ffmpeg.org/ticket/7498#comment:3>
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