This is an issue with the service not providing direct links to the video. If you open an .mp4 file in Firefox you can set it to open in an application through

This is an issue with the service not providing direct links to the video. If you open an .mp4 file in Firefox you can set it to open in an application through your "Applications" settings. By default it prompts "Open with..." or "Save as..." in a dialogue. If you open a direct link to a video you can open it to play in VLC (or player of your choice).