lavc: Add hevc_metadata bitstream filter

Multimedia / FFmpeg - Mark Thompson [jkqxz.net] - 17 October 2017 15:56 EDT

This is able to modify some header metadata found in the VPS/SPS/VUI, and can also add/remove AUDs.

(cherry picked from commit b31a9eae0233325c4b382c657f4b687d5d8b0812)

03f982b lavc: Add hevc_metadata bitstream filter
configure | 1 +
doc/bitstream_filters.texi | 54 +++++
libavcodec/Makefile | 1 +
libavcodec/bitstream_filters.c | 1 +
libavcodec/h265_metadata_bsf.c | 458 +++++++++++++++++++++++++++++++++++++++++
5 files changed, 515 insertions(+)

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