Backport of "rawvideoparse: set format from caps in gst_raw_video_parse_set_config_from_caps" into 1.20
Backport of !1970 (merged) "rawvideoparse: set format from caps in gst_raw_video_parse_set_config_from_caps".
Commits:
- b351da5e rawvideoparse: set format from caps in gst_raw_video_parse_set_config_from_caps