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Hardware Acceleration (lemmy.dbzer0.com)

submitted 6 days ago by [email protected] to c/[email protected]

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I've pirated every video converter known to man (UniConverter, WinX, VideoProc, Aiseesoft, Tipard, etc) & even tried open source tools like ffmpeg and handbrake and I can't get hardware acceleration to work unless I just don't understand how it's supposed to work. I have a Radeon (TM) RX 470 graphics card and plenty of processing power.

An example is when I attempt to convert a video to HEVC and don't use acceleration, I can get like 100 FPS and 2-3 mins rendering time but all my CPUs go to over 100%.

However, when I turn on acceleration or use the AMD HEVC Encoder (ffmpeg, handbrake), the FPS rate drops to like 10-15 FPS, the CPUs barely go over 10% and the GPU then jumps to over 100% which is fine but then it tells me it'll take like 20 mins to render a 20 mins tv episode!?!?

This is driving me crazy. Can someone provide some insight on this? I'd be forever grateful. Thanks!

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[–] [email protected] 3 points 5 days ago

This is probably the best answer you will get OP ! I have done some encode (BD -> SVT-AV1) and everything FBJimmy said is everything I have gathered through my search on how to get the best quality/speed encode without loosing to much of fine details.

This won't make you happy if what you want is to use GPU encoding, cauz this is for on the fly encoding (streaming via twitch, Youtube, whatever...). It seems a nice idea to do GPU encoding but CPU software encoding is way more efficient than GPU.

It seems You aren't looking for quality video encoding, but more speedy encoding? If that's the case, yeah GPU encoding seems the best idea here. But can't help sorry...

Most of the encode I have done with ffmpeg on AV1 got arround 20fps ? Yes it's slow, however I get near "lossless" quality with an acceptable file size to serve over Jellyfin. Also, I never heard someone mention that 80-90% CPU utilization is bad for your CPU if your temps are all right (over 80° seems a bit alarming). Sure if you're doing video encoding every day, your CPU will suffer offer time, I mean that's practically what they are build for... Processing information ! And like everything, the more you use it, the more it wears out (the same goes for your GPU...)

But I can understand your determination and hope you will find your way arround. I'm also stubborn when I want something to work the way I want.