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Old 9th March 2018, 14:39   #1  |  Link
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HEVC for old video

I am trying to find good settings for encoding old tv shows (currently xvid encoded from dvd rips) from the 1960s-1970s. I know lossy-lossy compression is not optimal, but I'd still like to use it. Some of these are way too large and need reencoding. What are good settings I can use to shrink the filesize without losing too much quality? The reason I ask for this specific type of video is that it was shot at lower quality, and so some quality-preserving features will add cpu time and filesize to preserve details that do not exist.
I could use staxrip (though I'd need more thorough guidance to navigate all those options), handbrake, ifme, or most other software (depending on the best).
Thank you all very much for the advice!
wendyjreichert is offline   Reply With Quote
Old 13th March 2018, 08:53   #2  |  Link
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CRF 20, slow or slower preset. With low quality lossy video, it's not worth the time, effort, and electricity to fine tune.
Weyoun is offline   Reply With Quote
Old 18th March 2018, 17:28   #3  |  Link
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I do not recommend CRF for x265 at all. Results for me have been quite bad, as some frames get absolutely starved of bits resulting in really low quality. x265 is extremely aggressive, and will starve certain frames of bits more than it should.

I've had fantastic results by doing a 2-pass encoding, with fast first pass, and depending on the content, grain tune enabled.

My suggestion: Create your own comparison, and see if the time saved by using CRF is worth it. In my tests, the time saved was NOT worth it, as 2-pass was the only encoding method that resulted in acceptable bitrate distribution.

I'd post a sample video to prove, but I'm too lazy.
Neillithan is offline   Reply With Quote

hevc, old video, x265

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