[FFmpeg-user] Equivalent parameter for CRF in hevc_videotoolbox
xanadu6291 at dream.jp
Wed Dec 5 16:54:42 EET 2018
Hello list member,
I recently noticed that ffmpeg can use hardware acceleration via videotoolbox on Mac.
Before above discovery, I use the command like as follows:
ffmpeg -i DR08.ts -c:v libx265 -preset medium -crf 23 -tag:v hvc1 -vsync 1 -c:a copy -bsf:a aac_adtstoasc DR08.mp4
Now I noticed that CRF does not work on hevc_videotoolbox codec. Based on very rough trying, -b:v only changes quality of encoded video.
So my question is is there equivalent parameter for CRF in hevc_videotoolbox codec or not. In another word, how to set quality of hardware acceleration of video?
I have googled about this, but I can’t get the answer. So please help me!!
// Miya aka. TougenRoushi
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