[FFmpeg-devel] [PATCH] avcodec/nvenc: Video Codec SDK 10 features support

[hydra3333 at gmail.com]

> Hello,
>
> This patch adds Video Codec SDK 10 features support:
> 
>   *   Presets and tuning info
>   *   Multipass encode modes
>   *   Low Delay Key Frame Scale

Hello and thank you for this patch.  Possibly this post belongs in
ffmepg-user.

Per the above archive post above (
http://ffmpeg.org/pipermail/ffmpeg-devel/2020-June/265441.html )

Perhaps add a link and/or examples to be added to the internal help ?

1. In this thread/patch, what's the difference between options
slow, P7, and hq ?

Which is the "best" quality (some all say hq and a couple also say
multi-pass eg 2-pass) ?

2. How to combine and use the new options separately and/or in combination
with these, to achieve "best" quality ?
multipass 
fullres
...
-preset slow 
-2pass 1 
-rc:v vbr_hq

3. is there a link to a table of which models of cards have what features
enabled and what the target objectives are for each option, perhaps even a
ranking of quality/speed ?

Thanks