Here is some high voxel simulated Fire with Alpha
Full HD PNG 1920×1080 with Alpha Frame rate – 25 fps (can be adjusted to whatever you like) Duration: 778 Frames / 31:03
This fire is simulated at about 30% real time so it can work for slightly slower footage or work well as a distant fire. If you increase the speed in your editing/VFX software it will also work for real time footage anywhere in your scene.
This fire can be duplicated, added onto itself and offset to create as many different looking fires as you like. It can also be repeated so you can have it as long as you would like.
I hope this is useful to you and have fun making things burn.