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Old Today, 07:23   #6461  |  Link
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Join Date: Aug 2014
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I did a few more test runs with the same parameters I stated before using 50k frames test clip. Here are the results.

Normal Preset:
sse4 2.19fps
avx2 2.89fps
512 3.18fps

They all had the exact same kbps of 23463.

Slower Preset:
sse4 0.71fps
avx2 0.89fps
512 0.95fps

All of them ended up with the exact same kbps of 22868.

My previous test from the other day seems to be a failure since I didn't use correct the correct switches for --asm.
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Old Today, 13:21   #6462  |  Link
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Join Date: Mar 2002
Location: Hollola, Finland
Posts: 4,411
Originally Posted by benwaggoner View Post
AFAIK it works by reducing signaling overhead without changing actual pixels.
There is a quite clear difference in the frame, it was quite obvious in this flat area (zoomed in though). The filesize difference was about 5% (the optimized version was smaller).

Without the optimization:

Optimization enabled:

In higher detailed area, the optimized encode looked better. I think I need to find a scene with some still background like sky, and see which one looks better in motion. The banding in flat areas can be quite eye-catching once you notice it.
And if the band you're in starts playing different tunes
I'll see you on the dark side of the Moon...
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