MTS is a filename extension for an Advanced Video Coding High Definition (AVCHD) video file. It contains a .mts filename extension and contains a HD MPEG video captured using certaing camcorder models like JVC, Sony, Canon, and Sanyo. It can support up to 1080i x 720p HD videos and can open on multiple software.
Roxio Creator NXT Pro 7 Blender VLC Media Player Apple Final Cut Pro X
According to YouTube, MP4 video format with AAC audio codec and H.264 video codec is most recommended. However, this platform is also compatible with formats such as MOV, AVI, WebM, FLV, 3GPP, WMV, and more. Also, keep in mind that the maximum file size for YouTube is 128GB or 12 hours of playtime. So, you can use a video editor like Wondershare UniConverter to compress before uploading videos to YouTube.
VLC Media Player Windows Media Player Apple QuickTime Player 5KPlayer