We have plenty of extension for video this are the 9 list extension address youtube approved. 3GPP, AVI, FLV, MOV, MPEG4, MPEGPS, WebM and WMV. MPEG4 commonly uses the . mp4 file extension. If your video are not on this list of extension then you cannot upload your files. Find a conversion on the video to make the process faster. Or use only video editor with an extension address on the listed below otherwise you will consume time in converting into the extension address.
One of the best quality video you can upload your video is using https://vimeo.com/ high quality video conversion yet limited of upload per week. If you are heavy users then you need to buy the pro.
Advantage of youtube channel is high traffic of viewers and can upload 99 videos in 1 day.
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