avfilter/showvolume : add persistent max display
authorMartin Vignali <martin.vignali@gmail.com>
Mon, 16 Apr 2018 09:32:48 +0000 (11:32 +0200)
committerMartin Vignali <martin.vignali@gmail.com>
Mon, 16 Apr 2018 09:35:03 +0000 (11:35 +0200)
commitfd10a6e2f21f9cadc44a0415e204ea82940cd089
treedc493c9626e6e6cf7712dd917881c1bb3274734c
parentcb2f52b6a70971c902ea2aaa989d141973472125
avfilter/showvolume : add persistent max display

draw a color line for the max level in the given duration
doc/filters.texi
libavfilter/avf_showvolume.c