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This is a weird experiment but getting the same results again:
When using a VS compiled x265 against a GCC compiled x265, if running --preset veryslow, I'm getting a 0.14 fps to 0.15 fps speed delta compared to using a "lesser aggressive" preset such as --preset slower and an almost equal delta while using preset --slow.
If this is confirmed using other source materials, it implies --preset veryslow has similar benefits to using --preset slow but an increased yield quality.
That is, if you can stand and cope with the slow fps crunching overall.
Would be good if anyone can run the same tests.
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