alphacombine: update example launch line

Fix typos and missing videoconvert element to demonstrate
the alphacombine element.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1494>

diff --git a/subprojects/gst-plugins-bad/gst/codecalpha/gstalphacombine.c b/subprojects/gst-plugins-bad/gst/codecalpha/gstalphacombine.c
index b5f2bc8..d9149f7 100644 (file)
--- a/subprojects/gst-plugins-bad/gst/codecalpha/gstalphacombine.c
+++ b/subprojects/gst-plugins-bad/gst/codecalpha/gstalphacombine.c
@@ -29,8 +29,8 @@
  *
  * ## Example launch line
  * |[
- * gst-launch-1.0 -v videotestsrc ! .c videotestsrc pattern=ball ! .c
- *     alphacombine name=c ! compositor ! autovideosink
+ * gst-launch-1.0 -v videotestsrc ! c. videotestsrc pattern=ball ! c.
+ *     alphacombine name=c ! compositor ! videoconvert ! autovideosink
  * ]| This pipeline uses luma of a ball test pattern as alpha, combined with
  * default test pattern and renders the resulting moving ball on a checker
  * board.