Hello, when playing video using the following command (Gstreamer), the video image is translucent, why?
gst-launch filesrc location=test.mp4 typefind=true ! aiurdemux ! vpudec ! mfw_v4lsink
How can I make it completely opaque?
Thank you!

The configuration information for MfgTools:
[profiles]
chip = MX6Q Linux Update
[platform]
board = SabreSD
[LIST]
name =Ubuntu-SabreSD-eMMC