[mythtv] mythtv 4K HEVC main 10 hardware video decoding

[Andreas Mayer]

Hi,

I noticed 0.29 configure added options  --enable-cuda and --enable-cuvid.

But it looks like those options are just added for ffmpeg configuration 
and there is currently no Nvidia CUDA/CUVID/NVDEV support for hardware 
assisted video decoding available in mythtv?

I'm asking because after buying a Nvida GT 1030 (which should support 4K 
HEVC Main 10 profile) I had to find out that VDPAU currently is not able 
to use this hardware capabilities (only main profile, and because of 
architectural limitations may never be able to do so) and Nvidia seems 
to provide future development for CUDA only.

What would be needed to use ffmpeg's existing HEVC CUDA hardware 
acceleration support in mythtv, would one need to write videooutput_cuda 
or is there something else that needs to be done?

Or would one be better off switching from Nvidia to Intel's Kaby Lake 
with VAAPI or something else?

It's not that much 4K HEVC content is currently availabe, but at least 
on Astra 19.2E in Europe all 4K (test) channels are using HEVC main 10 
profile (and currently I don't even own a 4K TV ;-), but I would like to 
be prepared - chicken and egg problem)

Thank you,

Andreas