Yes, unfortunately it is EOL, reason being "nobody uses analog video any more", A Maxim Field Apps Engineer here in the UK, nothing else like it in the offering from Maxim.
I tried it once, but ended up with all sorts of weird timing and sync issues, better experiment results were gained with a LM1881 sync separator IC and a MUX chip, but never fully worked as I wanted so I put it aside. I have used the BOB4 in the past which is a fairly decent module, albeit expensive!
I would be interested in others' responses as I may start looking at it again.