From 38aea9b0416f574757a56591b8a6f305cbc659ad Mon Sep 17 00:00:00 2001 From: Ashish Singh Date: Sat, 29 Jul 2017 14:16:29 +0530 Subject: avfilter: add vif filter This is Visual Information Fidelity (VIF) filter and one of the component filters of VMAF. It outputs the average VIF score over all frames. Signed-off-by: Ashish Singh --- doc/filters.texi | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'doc') diff --git a/doc/filters.texi b/doc/filters.texi index 9dfc0ec67f..426cb158da 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -21266,6 +21266,27 @@ otherwise colors will be less saturated, more towards gray. This filter supports the all above options as @ref{commands}. +@section vif + +Obtain the average VIF (Visual Information Fidelity) between two input videos. + +This filter takes two input videos. + +Both input videos must have the same resolution and pixel format for +this filter to work correctly. Also it assumes that both inputs +have the same number of frames, which are compared one by one. + +The obtained average VIF score is printed through the logging system. + +The filter stores the calculated VIF score of each frame. + +In the below example the input file @file{main.mpg} being processed is compared +with the reference file @file{ref.mpg}. + +@example +ffmpeg -i main.mpg -i ref.mpg -lavfi vif -f null - +@end example + @anchor{vignette} @section vignette -- cgit v1.2.3