[Libav-user] Nvenc_H264 very slow compared to Libx264

[Philippe Noël]

Hi,

I was using libx264 to encode a video file using libav from a C file and
switched to nvenc_h264 and now the encode is very slow. It appears
nvenc_h264 does not have a "ultrafast" setting.

With nvenc_h264 I am using preset "llhq" and tune "zerolatency". Am I using
the wrong settings?

Cheers,

Philippe
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