26.07.2022, 18:02
Ah, that's pretty interesting then. 
I also just realised that taking a snapshot of some PAL DVD with 16:9 footage also returns a 720x576 image, which looks relatively even more squished than 768x576 footage in 720x576.
I guess this is how (PAL) DVDs are able to support widescreen. They don't add more pixels but they squish the footage to 720x576 and then play with the DAR and make it 16:9 instead of 4:3.
And I guess this also explains why 16:9 footage looks worse in quality, a bit blurry, because they're stretching the PAR more.
I also just realised that taking a snapshot of some PAL DVD with 16:9 footage also returns a 720x576 image, which looks relatively even more squished than 768x576 footage in 720x576.
I guess this is how (PAL) DVDs are able to support widescreen. They don't add more pixels but they squish the footage to 720x576 and then play with the DAR and make it 16:9 instead of 4:3.
And I guess this also explains why 16:9 footage looks worse in quality, a bit blurry, because they're stretching the PAR more.