avfilter/avf_showvolume: add background opacity option
authorPaul B Mahol <onemda@gmail.com>
Thu, 22 Mar 2018 22:08:33 +0000 (23:08 +0100)
committerPaul B Mahol <onemda@gmail.com>
Thu, 22 Mar 2018 22:08:33 +0000 (23:08 +0100)
commitb78d55b2e63e410abe744932fda9358633743a9e
treef96a6627f9316887e188a5ddbe19c0704150d0bd
parent016d40011ac2815157fc11f6dda2f9bfb520ecfe
avfilter/avf_showvolume: add background opacity option

This makes output more visible when overlayed.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
doc/filters.texi
libavfilter/avf_showvolume.c