n4.2.11
Merge commit '7e5bde93a1e7641e1622814dafac0be3f413d79b'
fftools/cmdutils: Add protective () to FLAGS
cmdutils: print supported codecs in show_help_bsf()
fftools/ffmpeg: Check read() for failure
ffmpeg_hw: Mark some strings as const
Merge commit 'c95169f0ec68bdeeabc5fde8aa4076f406242524'
ffmpeg_filter: initialize sub2video.end_pts together with last_pts
ffmpeg_hw: Treat empty device string as no device setting
fftools/ffmpeg_opt: Fix leak of options when parsing options fails
fftools/qsv: add extra_hw_frames support
avcodec/videotoolbox: add support for 10bit pixel format
ffplay: set stream_index to -1 earlier to prevent segfault
ffprobe: Fix memory leak