Buffer "Create a status update" - which Network does actually support Video Uploads

So it seems some of the Buffer App is de-deprecated as Creating (a text) post seems to work again

but for X/Twitter and more importantly TikTok I dont know how to set these options to actually get the video to upload?

  • I have a video both at a public https url with google cloud storage and have it downloaded with the http module as well. But know matter how I set these Buffer options I only get text.

Can somebody tell me which Networks through Buffer support which uploads and maybe update the docs?

Leo