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hello_hello · 22nd February 2021, 16:12

I have a memory... from a long time ago.... of Handbrake switching between a generic and ITU aspect ratio based on cropping. No cropping and it used generic, but once you cropped from the sides (somewhere around 12 pixels total) it switched to ITU. I don't think my brain invented that memory, but I don't think it works that way these days. Maybe there's a reason.....

I thought MeGUI was the only "active" program using the old "almost correct" ITU PARs, but the DAR in one of the screenshots (1.82361) seems to indicate StaxRip uses them too. Maybe this would be an opportunity to switch to the mpeg4 PARs instead.

https://forum.doom9.org/showthread.p...27#post1058927
The main reason is the mpeg4 PARs are Bluray compliant and almost identical to the ITU PARs. How does StaxRip handle a situation where you're encoding a DVD based on an ITU PAR and want the output to be Bluray compliant?

The other thing that's nice about the mpeg4 PARs instead of ITU, is they result in the same DARs for both NTSC and PAL. Just as the generic PARs give you exactly 16:9 and 4:3, the mpeg4 PARs give you DARs of 20:11 and 15:11 for both NTSC and PAL.

I don't know if 44vince44 is reading this thread, but....
https://github.com/staxrip/staxrip/i...ment-782734036
I don't think there ever was a bt601 colormatrix option for x264/x265, but there's bt470bg and smpte170m which are functionally equivalent to bt601 for colormatrix. There's info in this post if you're interested.
https://forum.doom9.org/showthread.p...24#post1897824

22nd February 2021, 16:12	#13 \| Link
hello_hello Registered User Join Date: Mar 2011 Posts: 4,829	I have a memory... from a long time ago.... of Handbrake switching between a generic and ITU aspect ratio based on cropping. No cropping and it used generic, but once you cropped from the sides (somewhere around 12 pixels total) it switched to ITU. I don't think my brain invented that memory, but I don't think it works that way these days. Maybe there's a reason..... I thought MeGUI was the only "active" program using the old "almost correct" ITU PARs, but the DAR in one of the screenshots (1.82361) seems to indicate StaxRip uses them too. Maybe this would be an opportunity to switch to the mpeg4 PARs instead. https://forum.doom9.org/showthread.p...27#post1058927 The main reason is the mpeg4 PARs are Bluray compliant and almost identical to the ITU PARs. How does StaxRip handle a situation where you're encoding a DVD based on an ITU PAR and want the output to be Bluray compliant? The other thing that's nice about the mpeg4 PARs instead of ITU, is they result in the same DARs for both NTSC and PAL. Just as the generic PARs give you exactly 16:9 and 4:3, the mpeg4 PARs give you DARs of 20:11 and 15:11 for both NTSC and PAL. I don't know if 44vince44 is reading this thread, but.... https://github.com/staxrip/staxrip/i...ment-782734036 I don't think there ever was a bt601 colormatrix option for x264/x265, but there's bt470bg and smpte170m which are functionally equivalent to bt601 for colormatrix. There's info in this post if you're interested. https://forum.doom9.org/showthread.p...24#post1897824