n4.3.9
ffmpeg: remove superfluous custom cuvid hwaccel
fftools/cmdutils: Add protective () to FLAGS
fftools: Use right function signature and pointers
fftools/ffmpeg: Check read() for failure
fftools/ffmpeg: add new abort_on flag which aborts if there is a stream which received no packets
fftools/ffmpeg_filter: check the codec's descriptor to see if it's lossless
ffmpeg: Don't require a known device to pass a frames context to an encoder
ffmpeg: Remove the hw_device_ctx global
Stop hardcoding align=32 in av_frame_get_buffer() calls.
fftools/ffplay: do not write out of rdft visualization texture
fftools/ffprobe: show closed caption info in the stream dump