Symbol 5635 from IEC 60417 - Title/Meaning: Two component video input/output Function/description: To identify controls and connecting terminals specifically meant for Y/C separate video input/output.
Additional information: 
The type of signal may be indicated above the arrow as shown in symbols 5635-1 and 5635-2
Published in: Supplement O, 1996,3C/293/DIS
Own work using: iso.org/obp/graphics/grs/6e29a7c2-2e27-4bac-b5f3-e23121d56518 200.png
Vectorization:  Mrmw