videocrop: Also update the coordinate when in-place

This update is needed when the output caps is not changed (e.g. we are
moving a viewport around).

Fixes #669

1 files changed, 8 insertions, 0 deletions

diff --git a/gst/videocrop/gstvideocrop.c b/gst/videocrop/gstvideocrop.c
index c2e93a22d..104522a9b 100644
--- a/gst/videocrop/gstvideocrop.c
+++ b/gst/videocrop/gstvideocrop.c
@@ -508,11 +508,19 @@ static GstFlowReturn
 gst_video_crop_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
 {
   GstVideoCrop *vcrop = GST_VIDEO_CROP (trans);
+  GstVideoFilter *vfilter = GST_VIDEO_FILTER (trans);
   GstVideoMeta *video_meta;
   GstVideoCropMeta *crop_meta;
 
   GST_LOG_OBJECT (trans, "Transforming in-place");
 
+  if (G_UNLIKELY (vcrop->need_update)) {
+    if (!gst_video_crop_set_info (vfilter, NULL, &vcrop->in_info, NULL,
+            &vcrop->out_info)) {
+      return GST_FLOW_ERROR;
+    }
+  }
+
   /* The video meta is required since we are going to make the caps
    * width/height smaller, which would not result in a usable GstVideoInfo for
    * mapping the buffer. */