It's hard to make a video for such addon as it has some latencies due to the cron stuff you know. An album is created each month automatically then user submit media, then they vote and a winner is nominated. Aren't screenshot clear enough ?
Well depends on the video types you need, if default html it would be :
mp3, mp4 (AAC/H.264), ogg (Vorbis/Theora), webm (Vorbis/VP8), wav
But that might not be sufficient ? Otherwise it needs more complexe stuff to get conversion.