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 ™ 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!
Sorry, I’ll try to be a bit clearer here. I have an MKV (h.264, aac, ass soft sub) file 1920x1080 16:9 I want to re-encode with HEVC reducing it to a 640x360 while retaining the soft subs. Actually, I would like to burn in the soft subs but it keeps defaulting to the programs standard font instead of using the soft subs styles. I use HWMonitor when checking the various softwares so I can see how much CPU or GPU usage is going on. I’m wondering if it’s just a freaking AMD issue. I HATE so bad I didn’t get an Intel or Nvidia graphics card when I had my system rebuilt. Anyway, I hope this provides a bit more clarity. Feel free to ask anything else as I’m just basically going around in circles right now. Thanks so much for your input!
thats the issue, downscaling. when I downscale 4K to HD it takes about 45min for a 2h film, when I keep the resolution its like 5min.