[FFmpeg-devel] [PATCH] Added the possibility to pass an externally created CUDA context to libavutil/hwcontext.c/av_hwdevice_ctx_create() for decoding with NVDEC

Timo Rothenpieler timo at rothenpieler.org
Tue May 8 01:10:35 EEST 2018

Am 07.05.2018 um 19:37 schrieb Oscar Amoros Huguet:
> I was looking at the NVIDIA Video codec sdk samples (https://developer.nvidia.com/nvidia-video-codec-sdk#Download), where you can find the header NvDecoder.h next to cuviddec.h where CUVIDPROCPARAMS is defined.
> Anyway, I should have looked at ffmpeg code directly, to see what’s being used, sorry for that.
> Great then! Having the same cuda stream (either default or custom) for everything is the safest and most efficient way to go (in this case).
> Thanks, and let me know if I can help with anything.

You can find the mentioned changes on my personal github:

The cuMemcpy is entirely gone, not just Async. And the CUstream can be 
set and will be passed on to cuvid/nvdec.

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