[FFmpeg-devel] [PATCH] avcodec/nvenc: Add support for H.265 encoding

Timo Rothenpieler timo at rothenpieler.org
Tue Mar 24 09:54:13 CET 2015

Am 24.03.2015 um 05:41 schrieb Philip Langdale:
> Sufficiently new nvenc hardware (GM20x or later) has support for H.265
> encoding. This works the same as the H.264 encoder except the
> codec parameters are different.
> Due to the fact that common codec parameters are not shareable, there's
> quite a bit of conditional logic you'd wish we could do without, but
> such is life.
> Note that this feature requires the 5.0 SDK or newer to compile. I'm not
> sure what we gain from supporting the older SDKs, so I'm inclined to
> make this unconditional and remove the < 5 support that currently exists.

Yes, I did exactly that in my implementation:


The code i wrote there is completely untested(Except that h264 still 
works), because i don't have any compatible hardware, so the one you 
tested is clearly the one that should be prefered.

Dropping SDK <5 support is fine with me, as long as it's not backported 
to 2.6. The primary gain from supporting the old SDK is that it works 
with much older nvidia driver versions.

I'll submit the patch that drops the old API support, so you can rebase 
your patch on top of it.

Looks good to merge otherwise.

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