Distorted video when using videoflip, videoscale and a video with image-orientation tag

[domsch]

Thanks for your answer, unfortunately adding pixel-aspect-ratio=1/1 to the
caps does not solve the problem.
I used the following command:

gst-launch-1.0 -v playbin uri=file:///home/dmsch/portrait-fhd.mp4
video-sink="videoflip method=automatic ! videoscale !
video/x-raw,width=540,height=960,pixel-aspect-ratio=1/1 ! ximagesink"


Nicolas Dufresne-5 wrote
> Le vendredi 11 décembre 2020 à 03:24 -0600, domsch a écrit :
>> I'm having problems displaying portrait orientation videos that have an
>> image-orientation tag (rotate-90).
>> To automatically rotate the video I'm using videoflip (method=automatic).
>> My video has a resolution of 1080x1920 and I want to scale it down to
>> 540x960.
>> 
>> But gst-launch shows a distorted image:
>> gst-launch-1.0 -v playbin uri=file:///home/dmsch/portrait-fhd.mp4
>> video-sink="videoflip method=automatic ! videoscale !
>> video/x-raw,width=540,height=960 ! ximagesink"
> 
> You need to specify an aspect ratio:
> 
>   video/x-raw,width=540,height=960,pixel-aspect-ratio=1/1
> 
> I don't remember why ximagesink does not force squared pixel aspect ratio,
> there
> wa a reason, but by fixing the aspect ratio you prevent videoscale from
> scaling
> that field rather then actually doing the scaling job. You should notice
> in the
> CPU load the difference. It's a very common trap.
> 
> Nicolas
> 
>> 
>> Screenshot: https://imgur.com/a/XRvh6ZN
>> Video:
>> https://drive.google.com/file/d/1mYWEpHsWQljhBGlBB4RPgDe8qAuKm3r_/view?usp=sharing
>> 
>> 
>> 
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