avfilter: add thistogram video filter

Multimedia / FFmpeg - Paul B Mahol [gmail.com] - 29 December 2019 14:33 EST

cc43c2f29a avfilter: add thistogram video filter
Changelog | 1 +
doc/filters.texi | 50 +++++++++++++++++
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/version.h | 4 +-
libavfilter/vf_histogram.c | 134 +++++++++++++++++++++++++++++++++++++--------
6 files changed, 166 insertions(+), 25 deletions(-)

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