CUDA SDK requires compilation of ffmpeg

[yilun-wu]

Hi, just tried your Dockerfile - it seems that the precompiled ffmpeg which comes with apt does not have the latest Nvidia Codec SDK built in. I followed Nvidia's installation instruction and here's my Dockerfile which actually enables CUDA hardware acceleration. The acceleration comes with prebuilt ffmpeg is cuvid, which is deprecated and replaced by CUDA.

FROM nvidia/cuda:10.0-devel-ubuntu18.04
RUN apt update && apt install -y git build-essential yasm cmake libtool libc6 libc6-dev unzip wget libnuma1 libnuma-dev pkg-config

RUN git clone https://git.videolan.org/git/ffmpeg/nv-codec-headers.git && \
    cd nv-codec-headers && \
    make install && \
    cd ..

RUN git clone https://git.ffmpeg.org/ffmpeg.git ffmpeg/ && cd ffmpeg && \
    ./configure --enable-nonfree --enable-cuda-nvcc --enable-libnpp --extra-cflags=-I/usr/local/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64 && \
    make -j 8 && make install ```