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GObject ╰── GInitiallyUnowned ╰── GstObject ╰── GstElement ╰── GstVideoDecoder ╰── GstOpenh264Dec
| name | sink | 
| direction | sink | 
| presence | always | 
| details | video/x-h264, stream-format=(string)byte-stream, alignment=(string)au, profile=(string){ constrained-baseline, baseline } | 
| name | src | 
| direction | source | 
| presence | always | 
| details | video/x-raw, format=(string)I420, width=(int)[ 1, 2147483647 ], height=(int)[ 1, 2147483647 ], framerate=(fraction)[ 0/1, 2147483647/1 ] |