[Feature request] search video in channel detail surface.

[long-crypto]

Checklist (Your issue will be automatically closed if you delete this part)

• [x] I make sure that there are no existing issues - open or closed - which I could contribute my information to.
• [x] I believe this feature request will benefit more than 10% of users, not just myself.

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** Description (Start here) search video uploaded by a user more easily.