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.
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ASF (Advanced Systems Format) is a digital multimedia format designed to save and open content online. It is the primary container for Windows Media Video and Windows Media Audio content. Today, ASF supports smooth playback on HTTP servers, media servers, and local storage with programs like Windows Media Player.