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rigaya / NVEnc

NVENCによる高速エンコードの性能実験
https://rigaya34589.blog.fc2.com/blog-category-17.html
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fastdecode tuning alternative #581

Closed couleurm closed 2 months ago

couleurm commented 2 months ago

hello, i am looking for alternatives to x264 fastdecode that encode faster, what would be some NVEncC arguments that replicate or get close to it

bitspyer commented 2 months ago

Depending on your Nvidia Card (check with --check-features Option)

--preset quality --lookahead 32 --ref 6 (depends on Card) --bframes 5 (depends on Card) --mv-precision Q-pel --aq --aq-strength 0 --aq-temporal

than you can try 2-pass Encoding with vbr: --multipass 2pass-full --vbr 5000 (depends on Source, HD, UHD...maybe u need higher bitrate)

or use --qvbr 20 (depends on source)

nvencc often needs more bitrate for same quality as x264, but for this its fast!

And read the Docs....

rigaya commented 2 months ago

Unfortunately there is no option for x264 "fastdecode" in nvencc.

bitspyer commented 2 months ago

ah, as i see, i miss understood the question... sorry for that. It was for the x264 tune parameter fastdecode

rigaya commented 2 months ago

I'll close the issue as the question has been answered.