I have a website that will involve the user uploading a video file which can then be viewed on the website, will i have to convert the file into different formats so it can be viewed in different browsers? or can i just play mp4, ogg and mov files on all browsers?
you have few options.
Chrome = 3gp, .avi, .mov, .mp4, .m4v, .m4a, .mp3, .mkv, .ogv, .ogm, .ogg, .oga, .webm, .wav
Firefox = mp4, WebM, Ogg.
IE = mp4, no Ogg
Safari = mp4, no Ogg.