Animation of the Sun or any other burning star in the universe.
10-bit Apple ProRes HQ.
4k version with alpha channel: https://videohive.net/item/the-sun/20703364
If you quickly need to unmult this and get a perfect alpha channel you can use the free plug-in Color Vibrance by Video Copilot – https://www.videocopilot.net/blog/2014/05/new-plug-in-color-vibrance/
Looking for suitable music? – https://videohive.net/collections/8569412