The following video formats can be uploaded: mp4, m4v, mkv, webm, mov, avi, wmv, mpeg, flv. Technically, we accept anything that can be uploaded within an hour, but if the video is in the wrong format or too high resolution, we will scale it down to 1080p. Smaller file sizes make the uploading process faster. Ideally, keep it below 500 MiB.