MPEG-2 Pixel Aspect Problem

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HrdcorECW1637
Posts: 4
Joined: Tue Dec 14, 2021 12:46 am

MPEG-2 Pixel Aspect Problem

#1 Post by HrdcorECW1637 » Thu Jan 04, 2024 10:16 am

Hey all, I have two MPEG-2 files I ripped with MakeMKV, both 1920x1080, showing up in HandBrake as 1080x1080. I went to the HandBrake forum and showed them the log it gave me, and the people there noticed that the files have a PAR of 9:16 and a display of 1:1.

Stream #0:0(eng): Video: mpeg2video (Main), yuv420p(tv, progressive), 1920x1080 [SAR 1:1 DAR 16:9], SAR 9:16 DAR 1:1, 23.98 fps, 23.98 tbr, 1k tbn

Maybe there's a bug in MakeMKV now that's setting it wrong?

(I also found an MPEG-2 file I ripped years ago it looks great in HandBrake now, so don't think the issue is there.)

I'm currently re-ripping/re-HandBraking all my Blus with different settings. Both of these movies ripped/HandBraked perfectly fine years ago, so I don't think it's a disc issue.

HrdcorECW1637
Posts: 4
Joined: Tue Dec 14, 2021 12:46 am

Re: MPEG-2 Pixel Aspect Problem

#2 Post by HrdcorECW1637 » Mon Jan 15, 2024 9:39 pm

Bueller?

dcoke22
Posts: 3106
Joined: Wed Jul 22, 2020 11:25 pm

Re: MPEG-2 Pixel Aspect Problem

#3 Post by dcoke22 » Tue Jan 16, 2024 6:42 am

A pixel aspect ratio of 9:16 would be a very tall pixel. That's taller than pixels on CRTs in the analog standard definition days. (https://bavc.org/par-sar-and-dar-making ... eo-pixels/)

If I had to guess, I'd say the authoring of the disc in question is weird. If you ripped this in past with an older version of MakeMKV, the likely bug was MakeMKV not honoring whatever the disc author declared for the PAR, SAR, & DAR. I would expect current MakeMKV would do a decent job at honoring that stuff, consequently exposing the weirdness of this particular disc.

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