| Top |  |  |  |  | 
| name | sink | 
| direction | sink | 
| presence | always | 
| details | application/x-yuv4mpeg, y4mversion=(int)2 | 
| name | src | 
| direction | source | 
| presence | always | 
| details | video/x-raw, format=(string){ I420, Y42B, Y444 }, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ] |