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Old 27th January 2020, 17:41   #7381  |  Link
Join Date: Dec 2003
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zerowalker, I can't answer your question but I do have a question for you. Were you using 10-bit and were you comparing 10-bit x265 against 8-bit x264?

We / I switched to x265 simply because we wanted to use 10-bit and AVC High10 had some compatibility issues with hardware players.
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Old 27th January 2020, 19:46   #7382  |  Link
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Originally Posted by zerowalker View Post
If you have like a 1080p video and use crf=16 (which i would say results in high quality for x264 at least) would x265 achieve the "same quality" for less space?
Or is it only in very high resolutions like 4k and beyond that x265 can outdo it cause of how it works?
If you're trying to get the best image in a fixed amount of bits, x265 beats x264 in the large majority of scenarios. A big part of this is you can use HEVC at a higher resolution, preserving a lot more detail by preserving more pixels. CRF comparisons are more complex, as it's not a linear relationship. Even just using x264 the same CRF gives different results depending on other parameters.

The biggest problem with x265 years ago was how it handled grain, which is much improved now.
Ben Waggoner
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Old Yesterday, 15:59   #7383  |  Link
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Originally Posted by zerowalker View Post
Annoying question but might as well ask it.

It was a long time ago since i checked out x265, probably like 2 years ago, and back then x264 was better except for edge cases which was very low bitrate and very high resolutions mostly.
This is still largely true: x265 is better for resolutions above 1080p and for very low bitrates (which are mostly suitable for streaming anyways).
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Old Today, 08:21   #7384  |  Link
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But the general rule remains: There is no magic. Size reduction requires a loss of quality. It's just a matter how annoying you rate this kind of loss.

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MediaFire: x264 | x265 | VPx | AOM | Xvid
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