Vimeo video triggers timeline

You would need to create a custom button that does two things:

You can usually get a video play automatically without user intervention, but browsers are disallowing the unprompted playback of videos with audio. So if you mute your videos and set them to autoplay, they should play (unless the user has set a low bandwidth setting on their mobile browser).

So you would use these properties to get a video to play automatically and muted if it was a video element in Hype:

For vimeo, you would just need to make sure it is muted if you'd like to autoplay it.