avfilter: add comments for duplicate line
authorSteven Liu <lq@chinaffmpeg.org>
Thu, 1 Feb 2018 02:55:19 +0000 (10:55 +0800)
committerSteven Liu <lq@chinaffmpeg.org>
Thu, 1 Feb 2018 02:55:19 +0000 (10:55 +0800)
commit27fe8930e0b9e7881e61eb9ed0b8b526f718abfe
tree40f884591847595ed9c08d4536b7ff0077f32962
parent61a4ee8ab482925cb419133cab42e4c4ef6a3f07
avfilter: add comments for duplicate line

comment about the looks like a duplicate line.
but that is used to reason x is expressed from y

Suggested-by: Paul B Mahol
Suggested-by: Michael Niedermayer
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>
libavfilter/vf_crop.c
libavfilter/vf_drawtext.c
libavfilter/vf_overlay.c