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Why aren't more releases x265? (lemmy.dbzer0.com)

submitted 8 months ago by [email protected] to c/[email protected]

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Nearing the filling of my 14.5TB hard drive and wanting to wait a bit longer before shelling out for a 60TB raid array, I've been trying to replace as many x264 releases in my collection with x265 releases of equivalent quality. While popular movies are usually available in x265, less popular ones and TV shows usually have fewer x265 options available, with low quality MeGusta encodes often being the only x265 option.

While x265 playback is more demanding than x264 playback, its compatibility is much closer to x264 than the new x266 codec. Is there a reason many release groups still opt for x264 over x265?

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[–] [email protected] 11 points 8 months ago (1 children)

GPU encoders basically all run at the equivalent of "fast" or "veryfast" CPU encoder settings.

Most high quality, low size encodes are run at "slow" or "veryslow" or "placebo" CPU encoder settings, with a lot of the parameters that aren't tunable on GPU encoders set to specific tunings depending on the content type.

[–] [email protected] 2 points 8 months ago

NVENC has a slow preset:

https://docs.nvidia.com/video-technologies/video-codec-sdk/12.0/ffmpeg-with-nvidia-gpu/index.html#command-line-for-latency-tolerant-high-quality-transcoding

As they expand the NVENC options that are exposed on the command line, is it getting closer to CPU-encoding level of quality?