Videos in Hubzilla

If you're running your own hub, you should be able to change the thumbnail by setting the system.default_video_poster configuration.

You can do it from the terminal, like this:

$ ./util/config system default_video_poster url/to/my_poster.jpg

You can also set a specific poster to the videos you post, by adding it to the [video] tag like this:

[video poster='url/to/my_poster']video-link[/video]

(Yes, the url has to be in single quotes in this case. Not sure if that was a conscious decision or not.)

Sources:

• Changing the thumbnail view for videos? - Hubzilla Support Forum