You can upload the following formats:
mov, mp4, m4v, wmv, avi, flv, mpg, mts, m2ts, mpeg, mkv, 3gp, 3g2, ogg, webm
aac, ac3, amr, mpa, m4a, m4p, mp3, wma, wav, aif, aiff
Uploaded videos will be converted to the format “.mp4” on the server in a consistent and automatic way to guarantee a perfect playback of the videos.
Basically, the bigger your video file, the longer the upload takes. For large files, it is recommended to reduce the videos before the upload.
The bit rate (or data rate) controls both the optical quality of the video and its file size. If your video editing software has the option, specify a minimum of 2,000 kbit / s for videos in standard resolution (SD) or 4,000 kbit / s for 720p / 1080p video.