Symbol 5634 from IEC 60417 - Title/Meaning: Three component video output Function/description: To identify controls and connecting terminals specifically meant for three component video output.
Additional information: 
The type of signal may be indicated above the arrow as shown in symbols 5634-1 and 5634-2
Published in: Supplement O, 1996,3C/293/DIS
Own work using: iso.org/obp/graphics/grs/fb75e2dc-149d-43ae-8e78-3c10e1051f58 200.png
Vectorization:  Mrmw