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-rw-r--r--libavfilter/vf_crop.c2
-rw-r--r--libavfilter/vf_null.c1
-rw-r--r--libavfilter/vf_vflip.c2
3 files changed, 5 insertions, 0 deletions
diff --git a/libavfilter/vf_crop.c b/libavfilter/vf_crop.c
index e2b9bc39b4..45415e11b1 100644
--- a/libavfilter/vf_crop.c
+++ b/libavfilter/vf_crop.c
@@ -214,6 +214,8 @@ static void draw_slice(AVFilterLink *link, int y, int h)
AVFilter avfilter_vf_crop = {
.name = "crop",
+ .description = NULL_IF_CONFIG_SMALL("Crop the input video to x:y:width:height."),
+
.priv_size = sizeof(CropContext),
.query_formats = query_formats,
diff --git a/libavfilter/vf_null.c b/libavfilter/vf_null.c
index 4002d87479..582708ce0c 100644
--- a/libavfilter/vf_null.c
+++ b/libavfilter/vf_null.c
@@ -41,6 +41,7 @@ static void end_frame(AVFilterLink *link)
AVFilter avfilter_vf_null = {
.name = "null",
+ .description = NULL_IF_CONFIG_SMALL("Pass the source unchanged to the output."),
.priv_size = 0,
diff --git a/libavfilter/vf_vflip.c b/libavfilter/vf_vflip.c
index 5a52479dc5..ae7b9b475f 100644
--- a/libavfilter/vf_vflip.c
+++ b/libavfilter/vf_vflip.c
@@ -87,6 +87,8 @@ static void draw_slice(AVFilterLink *link, int y, int h)
AVFilter avfilter_vf_vflip = {
.name = "vflip",
+ .description = NULL_IF_CONFIG_SMALL("Flip the input video vertically."),
+
.priv_size = sizeof(FlipContext),
.inputs = (AVFilterPad[]) {{ .name = "default",