avfilter/vf_waveform: make possible to change background opacity
authorPaul B Mahol <onemda@gmail.com>
Wed, 7 Sep 2016 20:19:45 +0000 (22:19 +0200)
committerPaul B Mahol <onemda@gmail.com>
Wed, 7 Sep 2016 20:38:14 +0000 (22:38 +0200)
commit4fb6f9de0cfcbeb51684e5754bea8f10d4a8a9bf
treefcfe19654e8fc217c312c9d372d9780462d7e07b
parent4b290078e4c6ab48847cb65b9ff48b720a5ac8d6
avfilter/vf_waveform: make possible to change background opacity

Only useful if output pixel format have alpha.

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