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The joy of HEVC
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clort
2021-07-04 , 09:08
Posts: 106 | Thanked: 314 times | Joined on Mar 2019
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3
Can you share your parameters and results @nonsuch?
I'll show you an example:
H265: -movflags faststart -c:v libx265 -crf 27 -pix_fmt yuv420p -preset medium -tune fastdecode -auto-alt-ref 0 -metadata:s handler_name=ClortVids
FILESIZE = 1.996 MB
H264: -movflags faststart -c:v libx264 -crf 23 -pix_fmt yuv420p -preset medium -tune fastdecode -auto-alt-ref 0 -metadata:s handler_name=ClortVids
FILESIZE = 3.933 MB
Results: h265 on top, h264 on bottom
Notice the color quantization, pixel blocking.
Video results:
H264
http://0x0.st/-fL3.mkv
H265
http://0x0.st/-fL4.mkv
At least with these parameters H264 looks worse even at twice the filesize of H265.
Cpu use with mplayer vieweing 24fps 960x540 is at 55-75% with h264 and 75-105% with h265. The encoding time for h265 is about 10x slower.
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