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Date: Sat, 5 Nov 2022 10:08:04 -0700
From: Philip Langdale <philipl@overt.org>
To: ffmpeg-devel@ffmpeg.org
Message-ID: <20221105100804.647155c6@fido7>
In-Reply-To: <20221104114016.203-1-timo@rothenpieler.org>
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 <20221104114016.203-1-timo@rothenpieler.org>
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Subject: Re: [FFmpeg-devel] [PATCH v3] avcodec/nvenc: add AV1 encoding
 support
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On Fri,  4 Nov 2022 12:40:16 +0100
Timo Rothenpieler <timo@rothenpieler.org> wrote:

> The encoder seems to be trading blows with hevc_nvenc.
> In terms of quality at low bitrate cbr settings, it seems to
> outperform it even. It produces fewer artifacts and the ones it
> does produce are less jarring to my perception.
> 
> At higher bitrates I had a hard time finding differences between
> the two encoders in terms of subjective visual quality.
> 
> Using the 'slow' preset, av1_nvenc outperformed hevc_nvenc in terms
> of encoding speed by 75% to 100% while performing above tests.
> 
> Needless to say, it always massively outperformed h264_nvenc in terms
> of quality for a given bitrate, while also being slightly faster.

Obviously not able to test, but looks reasonable to me.


--phil
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