Here is thirty seconds of falling snow with an alpha channel. Full HD resolution. In the first 10 seconds of the video, the snowflakes gradually increase and fall heavily in the next 20 seconds.
Falling Snow Full HD Alpha Chanel

Video Player is loading.
This is a modal window.
The media could not be loaded, either because the server or network failed or because the format is not supported.
Alpha Channel: Yes, Looped Video: No, Frame Rate: 25, Resolution: 1920x1080, Video Encoding: ProRes, File Size: 1.63GB, Number of Clips: 1, Total Clip(s) Length: 00:30