The VideoLAN Forums

I've see there are 2 options to make 4k video fullscreen on 21:9 3440x1440p ultra wide monitors

One to set aspect ration to 21:9 where the 4k video is stretched with black bars on top and bottom

Second to set crop for 21:9 to crop the black bars off the top and bottom which really makes the video full screen

Since the video is 2160p 4k... and I'm displaying on 1440p ultramodern I'd like to see a full screen retaining as much of the image as possible

What would the affect be of setting both the aspect ratio AND the crop both to 21:9 ?

All info i see talks about setting on or the other... but not both at same time

Would setting both give me better video quality and less loss by both stretching the video horizontal and cropping the top n bottom black bars?

What would the affect be of setting both the aspect ratio AND the crop both to 21:9 ?

You can't have both. Because most videos have a 16:9 aspect ratio and many films a 2.35:1 / 2.39:1 one, the latter is close to 21:9 but not exactly the same.
So you have to choose: either you want to see the whole original image and then you'll get black bars, or you want the whole screen to be filled which means you have to zoom in and then you cut a part of the original image.

...or you distort the picture.

keep press "c" on the keyboard until you reach your goal

ответ взял отсюда:
https://linustechtips.com/topic/1258666 ... t-14125297