n4.4.6
ffmpeg: remove superfluous custom cuvid hwaccel
fftools/cmdutils: Add protective () to FLAGS
fftools: Switch to const AVCodec * where possible
fftools/ffmpeg: Check read() for failure
fftools/ffmpeg: use av_packet_alloc() to allocate packets
fftools/ffmpeg_filter: Don't use deprecated function
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: use av_packet_alloc() to allocate packets