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Old 8th May 2023, 03:59   #1  |  Link
HD MOVIE SOURCE
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New To x264 - Coming From x265 - High Detail - Bframe Quality and more...

Hi,

I'm new to x264, and I'm coming from x265. I'm just wondering if any of the settings from x265 have any equivalence to x264?

The first thing I noticed was that x264 looks over-sharpened and edgy. So, I found that no-psy gives a similar look to x265, but even then there is some edge. With that said are there any settings in x264 that control detail outside of psy controls? I've read that the deadzones can control fine detail. I'm after as much detail as the encoder will allow.
Is deadzone-inter=0 and deadzone-intra=0 absolute maximum detail?
Are there any other settings that specifically go after detail?

Like x265, I keep to uhd-bd=1 just to give me a sense of a spec to go after. With x264 I'm using bluray-compat=1. I do this to learn how to maximize encodes for a particular constraint. I enjoy doing this. Are there any restrictions using bluray-compat=1?
I know that Blu-ray can only use 3 bframes, which is honestly fine. Also it can only use as high as b-pyramid=1, which I've found to be a quality loss anyway, so I just use b-pyramid=0.

Are there any other specific settings that are required for Blu-ray compatibility? How many refs is it 3 or 4?

With x265 use can use ctu=64, would an equivalent setting in x264 be 8x8dct=1? Is that as high in blocks as we can go?

I read here: http://www.chaneru.com/Roku/HLS/X264_Settings.htm that slices on Blu-ray should be set to 4, is this accurate?

Are lookahead_threads=0 the same as x265? I typically set those to zero.


Another thing I'd like to know, exactly which settings increase bframe and pframe quality? Using x265 we have b-adapt=2, b-intra, b-pyramid, weightb, weightp.
I've seen that x264 has some similar options, but it does haven't b-intra, are there any more settings where I can get even more quality out of bframes?


Thanks for reading, any info is welcome. I'm basically trying to get as much detail without that artificial overshrpened look, and keeping to a restriction like the Blu-ray format because it helps me try to maximize what I have. I prefer to learn that way rather than just maxing everything out.
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