I'm attempting to build FFmpeg from source for the Rockchip 3399 and not able to get it working so far. The `ffmpeg -benchmark -loglevel 48 -vcodec h264_rkmpp -i b85.mp4 -map 0:v:0 -f null -` command for example, produces a segmentation fault along with a message indicating the MPP context and RKMPP decoder failed to initialize. Has anyone done this successfully?

For the FFmpeg build, I'm including the --enable-rkmpp, --enable-version3, and --enable-libdrm configure options as required for rkmpp hardware acceleration, and previously built the Rockchip MPP library from the release branch of the github (ref. https://github.com/rockchip-linux/mpp). Should I be using sources from some other location? The FFmpeg github indicates that this chip has been supported since version 3, and there doesn't appear to be any library issues in the build, which is being done on the device (running FriendlyCore 5.15).

Any hints or tips would be greatly appreciated.