[HELP] How do I change the display aspect ratio?

[Selur]

Is PAR a thing for image files? I suppose not?

PAR usually only is used in combination with video.

I noticed that when I make a snapshot of a PAL DVD video that's playing in media player MPC-HC, where the displayed resolution was 768x576, the saved snapshot would be 720x576. I assume this is the "storage resolution". However, when I take a snapshot in VLC, I actually do end up with a 768x576 image. Since this second snapshot does in fact have a greater width and doesn't seem to have a different PAR, I assume this image, while staying truthful to the DAR, will have some quality loss, since it's basically resized from the storage resolution.

Sounds, right, one is making an image of the raw data it got and the other is taking an image of the data it presents to the user.