avfilter: add scale2ref filter

Multimedia / FFmpeg - Michael Niedermayer [niedermayer.cc] - 17 August 2015 10:18 UTC

This filter can be used to scale one stream to match another or based on another, useful to scale subtitles or other things to be overlayed

21566b2 avfilter: add scale2ref filter
configure | 2 ++
doc/filters.texi | 17 +++++++++
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/version.h | 2 +-
libavfilter/vf_scale.c | 88 ++++++++++++++++++++++++++++++++++++++++++----
6 files changed, 103 insertions(+), 8 deletions(-)

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