For non-techie persons, you don't need to understand the nitty-gritty of all the terms.To convert AVCHD video to MP4 at the original quality, the conversion tool needs to be able to pass through the video stream without re-encoding, as well as maintain the same resolution, frame rate (FPS), aspect ratio, etc. Convert AVCHD to MP4 at the Original Quality Since MP4 also supports MPEG-4 AVC/H264 codecs used in AVCHD videos, it means when you rewrapping AVCHD to MP4, there is no need to transcode the video stream and hence no quality loss. m2ts), as well as accompanying metadata and other related files.Ĭompatible issues arise when importing AVCHD to Windows and Mac computers, besides copying out the MTS files, the best way is to convert AVCHD to MP4 as the latter is the most compatible format. It is a structured folder to store the real video clips (with extension. AVCHD (Advanced Video Coding High Definition) files usually come from camera recorders such as Sony, Canon, Panasonic, and JVC devices.