Backport of "glvideomixer: Keep a reference to the underlying pad" into 1.22
Backport of !3916 (merged) "glvideomixer: Keep a reference to the underlying pad".
Commits:
- dc1c9c89 glvideomixer: Keep a reference to the underlying pad
Backport of !3916 (merged) "glvideomixer: Keep a reference to the underlying pad".
Commits: