[Nouveau] State of Video Decoding for Maxwell cards

[Karol Herbst]

Well, you are most likely using the CPU for decoding here. Currently
nobody is working on that, because this is quite a big and challenging
project. We have an open project idea regarding this for EVoC and GSoC
though:
"Maxwell Accelerated Video Decoding" https://www.x.org/wiki/SummerOfCodeIdeas/

On Thu, Nov 30, 2017 at 1:18 PM, Christoph Böhmwalder
<christoph at boehmwalder.at> wrote:
> Hi Everyone,
>
> I have a Maxwell Card (GTX 970/NV 110) and would very much like to use
> nouveau to drive it.  The problem is that the performance -- especially
> when decoding high-resolution video -- seems to be relatively poor
> compared to the proprietary Nvidia driver.  I'm interested in Kernel
> Development and pretty much the only thing keeping me from tracking the
> upstream kernel (and using my distros relatively old 4.13.15 kernel
> instead) is the inability to play e.g. 4K YouTube videos using nouveau.
>
> Now I know that the Feature Matrix [1] specifies Video Decoding
> Acceleration for NV110+ cards as "TODO" (and all other 2D features as
> "WIP"), but it also says that the matrix is updated rarely and might
> thus be out of date.
>
> This is why I wanted to inquire here whether or not any active
> development is actually being done on this (quickly skimming the commit
> logs seems to indicate otherwise).  I'd just like to know whether or not
> it's even worth it for me to track the latest Git version of the kernel in
> order to watch out for performance improvements.
>
> Thanks for reading, I'm looking forward to your replies.
>
> [1] https://nouveau.freedesktop.org/wiki/FeatureMatrix/
>
> --
> Regards,
> Christoph
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