This HD backdrop texture can be used as either a background for titles, or as a component to layer over other footage. It is constantly moving and morphing and makes a great alpha channel. Feel free of course to change the hue or gamma to suit. In reality this is a shot of waves breaking, shot at 50% speed.
You can download it in 1080p HD Quicktime format from here:
If you like this and want more then you can go to the whole archive of lens flares and light leaks here.
They are offered under creative commons. Read more here. If you are super kind and get something out of using these then please donate a small amount and I can do some more. If you use them for commercial projects then you should pay also...