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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In most cases, most release groups already fine tune encoding settings towards various balances of file size and quality, so the best option is to decide on a set of release group whose standards meet your needs and just use the files as they come without further modification.
Applying lossy compression to a video that’s already had lossy compression applied to it degrades it unnecessarily, so if you’re going to compress it yourself, it’s best to start with the remux, aka the original media file.
I’d personally recommend releases from members of the qxr group and Vyndros.
I understand about reencoding and I’ve gotten a lot of flak about that from a lot of people but as I mentioned above it’s more of a space issue with me also. I appreciate the mention of groups to look to as that helps much. Thanks for your input!
Don’t encode lossy to lossy. The encoding will take forever and the image quality will suffer. If you want file size savings redownload your media in h265 or whatever. Or temporarily download a lossless copy, encode, and delete.
In my opinion the ideal x265 size/speed/quality is using a tuned slow preset, perhaps with filtering if the source is grainy. A test encode or few should be done to determine an ideal CRF per source.
Since you don’t seem very familiar with x265, I would just stick with the defaults in slow preset, but consider using aq-mode 3 or 5 (only available in the patman mod). You can also adjust the aq-strength to help control the resulting size somewhat, I wouldn’t go lower than 0.5.
Thank you for the input! I’m unsure what aq-mode is but I’m sure it’s somewhere in FastFlix. There’s tons of settings in it that I need to look over. The default CRF for HEVC in that program is 22 and I don’t know if I should go higher, lower or what but I appreciate your insight.
CRF 18 is usually where I start at, but that is focusing on quality. I’d imagine you would want a higher starting point.
If you want to find out what different options are or do, the docs are a good place to start: https://x265.readthedocs.io/en/master/cli.html
Thank you for the input and reference material. I’ll give it a look-through and appreciate your time.