Cover image thumbnail is not generated from Bitchute video

[onlyjob]

Cover image thumbnail is generated from a link to YouTube video example1, but not from a link to Bitchute video example2.

At the moment, example posts are the topmost posts (under the pinned post) in the following group: https://ecency.com/created/hive-110000

Related: #219

[onlyjob]

For what it's worth, hive.blog correctly makes cover image from just the link to bitchute video.