videomixer: Fix pipeline in the documentation

Make sure that we have the same color format on all streams, i.e. AYUV

Fixes bug #625452.

diff --git a/gst/videomixer/videomixer.c b/gst/videomixer/videomixer.c
index 337f5de..00e843d 100644 (file)
--- a/gst/videomixer/videomixer.c
+++ b/gst/videomixer/videomixer.c
@@ -36,7 +36,7 @@
  * <refsect2>
  * <title>Sample pipelines</title>
  * |[
- * gst-launch videotestsrc pattern=1 ! video/x-raw-yuv, framerate=\(fraction\)10/1, width=100, height=100 ! videobox border-alpha=0 alpha=0.5 top=-70 bottom=-70 right=-220 ! videomixer name=mix ! ffmpegcolorspace ! xvimagesink videotestsrc ! video/x-raw-yuv, framerate=\(fraction\)5/1, width=320, height=240 ! alpha alpha=0.7 ! mix.
+ * gst-launch videotestsrc pattern=1 ! video/x-raw-yuv,format=\(fourcc\)AYUV, framerate=\(fraction\)10/1, width=100, height=100 ! videobox border-alpha=0 alpha=0.5 top=-70 bottom=-70 right=-220 ! videomixer name=mix ! ffmpegcolorspace ! xvimagesink videotestsrc ! video/x-raw-yuv, format=\(fourcc\)AYUV, framerate=\(fraction\)5/1, width=320, height=240 ! alpha alpha=0.7 ! mix.
  * ]| A pipeline to demonstrate videomixer used together with videobox.
  * This should show a 320x240 pixels video test source with some transparency
  * showing the background checker pattern. Another video test source with just