[BUG] Video metadata for channel page returns default metadata

[pblvrt]

Describe the bug
When sharing the channel page url with someone, the metadata image should be the channel banner page, not the default metadata.

To Reproduce
Steps to reproduce the behavior:

1. Paste https://streameth.org/65a90bfa7932ebe436ba936c into telegram
2. See default metadata image
3. Scroll down to '....'
4. See error

Expected behavior

1. Paste https://streameth.org/65a90bfa7932ebe436ba936c into telegram
2. See channel banner image