For those of you that torrent video files this question is geared toward you. I'm looking for a sweet spot between quality, size & speed for HEVC encoding. I'm using FastFlix and seem to be getting really wide and varying speeds.

I'm not really literate on all this video lingo but I can, at least, get it going. Most files take anywhere from 5-17 mins for a 30-40 mins clip. I have a AMD Radeon RX 470 graphics card but when I try and use the VCEEnc it won't let me use CRF which I've heard it the best way.

Anyway, if you're willing to share knowledge or what settings you use when you convert video to HEVC that might help me speed up my processing, I would be eternally grateful.

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[–] Xanza@lemm.ee 2 points 2 days ago* (last edited 2 days ago) (5 children)

I've been encoding HEVC for a long time and I've not once seen a file-size drop that dramatically. You're outrageously overestimating the file-size savings here.
If a video file is already compressed you'll see diminished and even negative returns by attempting to compress it further. OP seems to be taking pre compressed video files from the internet and attempting to compress them again (lossy to lossy) which is very very very stupid.

[–] rice@lemmy.org 2 points 2 days ago (4 children)

If a file is 5000kbps and you use 3000kbps you now have 25-50% savings like he just said. Nothing is overestimated, you can encode to w/e you want. This is how lossy encoding works, for everything.

[–] Chewy7324@discuss.tchncs.de 2 points 2 days ago (1 children)

Yes, but the point is keeping the quality the same. If you reencode a 5000 kbps x264 Blu-ray encode to 3000kbps x265 you will have visibly worse quality.
If you encode the corresponding Blu-ray remux with x265 to 3000 kbps the result will likely be nearly indistinguishable from the 5000 kbps x264 encode.

For OP: I also prefer smaller releases so I download mostly h265 WEB-DLs. They are usually around 3000-5000 kbps (1.3-2.3GB/hour) and look fine (especially as they usually come with HDR).
Redownloading WEB-DLs in the right size will give you the best quality for the small size (and saves energy, depending on where you live).

[–] rice@lemmy.org 3 points 2 days ago

just fyi x264 and x265 are programs, written by VideoLAN organization. h264 and h265 are the codecs

And no doing that is no guarantee in visibly worse quality. Depends entirely on the video in that scenario. Plenty of them will look almost the same (though h265 is a lot blurrier than 264, I'd say h264 to h264 you're likely to barely notice)

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