Forcing aspect ratio not working

[burcs]

I'm trying to force aspect ratio on some encodes but it's not taking. I know I can manually set it in mkvtoolnix but would rather skip that bit. I've set it to 4:3 but it ends up being 2.0. Using megui.


[Attachment 89065 - Click to enlarge]


[Attachment 89066 - Click to enlarge]

I also don't see an option for 16:9. Thanks.


[Attachment 89067 - Click to enlarge]

[Selur]

Dar != sar
https://en.wikipedia.org/wiki/Pixel_aspect_ratio

[jagabo]

The correct SAR for a 4:3 DAR 720x480 video is 8:9. Note that 720x480 is often really 704x480 with 8 pixels of padding at the left and right. With that type of video the real SAR is 10:11. Keep in mind that not all players will respond to DAR/SAR flags.

[Sharc]

I also don't see an option for 16:9. Thanks.

For 16:9 DAR (Display Aspect Ratio) the SAR (Sampling Aspect Ratio) is 32:27 for an NTSC DVD.
Take note that SAR (Sampling Aspect Ratio) is basically the same as PAR (Pixel Asect Ratio) which you will find in the literature. This often leads to confusion. For mutual understanding it is therefore recommended to spell the acronyms out.

[burcs]

All good info, thanks. I went another route and used an NLE to scale it up uniformly, then nudged it back and forth with keyframes. Wildly inaccurate borders, even in the same "scene". The exported uncompressed avi is seen as 4:3, but good to know in the future for avisynth, thanks.