2024-09-05, 03:42 PM
(This post was last modified: 2024-09-05, 03:44 PM by Efficient_Good_5784. Edited 1 time in total.)
As a general guideline, the more VRAM a GPU has access to, the better its tone mapping performance will be. So if you need to do lots of HDR to SDR conversion, go with an option that has more VRAM.
You are right with subtitles burn-in need to be processed on the CPU. This shouldn't be an issue on most modern CPUs (especially if the video transcode is being handled by the GPU instead).
Another common operation that's CPU only is audio transcodes, but audio transcoding is generally very lightweight, so most CPUs will not have any problem transcoding audio fast enough to not cause buffering.
An Intel 12th gen I3 sounds reasonable enough for your needs.
Also, in case you didn't know, QuickSync performance is nearly the same on all CPU models (when comparing the same generation of CPUs at least). The core count/tier level doesn't affect it as it's its own thing on the CPU.
Just know that you might have to disable the iGPU in the BIOS to make sure you're using the external GPU with Jellyfin in some cases.
And yeah, Intel Arc cards use QuickSync too.
And like I mentioned about the CPUs, the Arc card's encode/decode performance for QuickSync are roughly the same for all models (of the same generation again), so you can get a cheaper Arc card and receive the same transcode performance.
But if you're happy with the price of an A380, that's a good option.
(2024-09-05, 03:16 PM)oopsmybad Wrote: With an Arc graphics card, are any operations still CPU bound, like burning subtitles? Or are all of those GPU bound? For cost reasons, if I can get away with buying a 12th gen I3, that would save some money.Some operations still are CPU only.
You are right with subtitles burn-in need to be processed on the CPU. This shouldn't be an issue on most modern CPUs (especially if the video transcode is being handled by the GPU instead).
Another common operation that's CPU only is audio transcodes, but audio transcoding is generally very lightweight, so most CPUs will not have any problem transcoding audio fast enough to not cause buffering.
An Intel 12th gen I3 sounds reasonable enough for your needs.
Also, in case you didn't know, QuickSync performance is nearly the same on all CPU models (when comparing the same generation of CPUs at least). The core count/tier level doesn't affect it as it's its own thing on the CPU.
(2024-09-05, 03:16 PM)oopsmybad Wrote: Also, is it okay to buy an 'F' processor variant, one without the iGPU? It doesn't seem like Intel's Deep Link Hyperencode is destined for the Linux/docker version of jellyfin-ffmpeg anytime soon, and I think QuickSync still works, even without an iGPU, if you have an Arc GPU.It's fine to go with an F variant, but if the price for getting a CPU with an iGPU isn't that much more, I would just get that instead. Having the iGPU would mean you have a backup in case the GPU ever fails.
Just know that you might have to disable the iGPU in the BIOS to make sure you're using the external GPU with Jellyfin in some cases.
And yeah, Intel Arc cards use QuickSync too.
(2024-09-05, 03:16 PM)oopsmybad Wrote: Finally, I think an A380 would be capable of burning subtitles into a 4k DV/HDR stream, transcode a 4K DV/HDR movie to 1080p SDR, and transcode 1080p/x265 to 1080p/x264 -- 3 total simulatenous streams. If I'm wrong about that, please let me know.As I started this post, more VRAM is important for tone mapping, so if you need more of that, get a model with more VRAM.
And like I mentioned about the CPUs, the Arc card's encode/decode performance for QuickSync are roughly the same for all models (of the same generation again), so you can get a cheaper Arc card and receive the same transcode performance.
But if you're happy with the price of an A380, that's a good option.