Software & Apps File Types What Is an MTS File? How to open, edit, and convert MTS files Share Pin Email Print MTS Files. File Types Design Cryptocurrency MS Office Windows Linux Google Drive Apps File Types Backup & Utilities View More By Tim Fisher General Manager, VP, Lifewire.com Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. our editorial process Facebook Twitter LinkedIn Tim Fisher Updated June 17, 2019 A file with the .MTS file extension is most likely an AVCHD Video file but it could also be a MEGA Tree Session file or even a MadTracker Sample file. AVCHD Video files are saved in the HD MPEG Transport Stream video format and are commonly created with Sony and Panasonic HD camcorders. The video is Blu-ray compatible and supports 720p and 1080i video. Sometimes, these file types even use the M2TS file extension and might be seen stored alongside MPL files. MEGA Tree Session files store phylogenetic trees that the Molecular Evolutionary Genetics Analysis (MEGA) program can be used to analyze species genetics to help determine ancestral relationships. Versions after 5.05 use the .MEG (MEGA Data) file extension. MadTracker Sample files that use the MTS file extension are audio files that serve as samples of an instrument or another sound. MTS is also an acronym for other technology terms but none of them have anything to do with an MTS file format. Some examples include Microsoft Transaction Server, message transfer system, Microsoft Terminal Services, multi-threaded server, and media transcoding server. How to Open MTS Files In addition to the software included with Sony and Panasonic HD cameras, a number of other video players can open MTS files that are in the AVCHD Video file format. Some examples include Windows Media Player, GOM Player, and VLC. To easily share the MTS file online or to open it from your browser or Chromebook, upload it to Google Drive. Please know, however, that MTS videos are usually very large in size, so the upload process might take quite some time to finish. If you're looking to edit the MTS video file, you might try EDIUS Pro, MAGIX Movie Edit Pro, or CyberLilnk PowerDirector. All of these are commercial programs, so you'll have to purchase the program to use it for editing (some might be available as free trials for a limited time) MTS files that are in the MEGA Tree Session file format are opened with the free MEGA software. MadTracker is the application needed to open MadTracker Sample files. You can do so from the Sample > Load... menu. How to Convert an MTS File Since there are three different file formats that use the MTS file extension, it's important to first recognize which format your file is in before you try converting it. If you tried plugging the MTS file into a converter that's for a different format than your file, you might end up trying to convert a video file into a phylogenetic tree, for example, which clearly isn't possible. AVCHD Video files are, of course, video files, so for them, you want to make sure you're working with a video file converter. To play your MTS file on a phone or with a specific video player, you can use one of those video converters to convert the MTS to MP4, MOV, AVI, or WMV, or even directly to a DVD disc. You might also have luck converting the MTS file with VLC. To try that, go to Media > Convert / Save... and then import the video file from within the File tab. Click Convert / Save and choose which format to convert the MTS file to. Freemake Video Converter is one example of a free MTS converter. It can save the video to a DVD or an ISO image, as well as convert it to several different video file formats or extract the audio out of the video. Another free MTS converter is EncodeHD. If MEGA Tree Session files can be converted to any other format, it's likely only possible through the MEGA program mentioned above. The software can also convert other file formats into one compatible with MEGA, such as ALN, NEXUS, PHYLIP, GCG, FASTA, PIR, NBRF, MSF, IG and XML files. MadTracker might be able to save an MTS file in its own format to WAV, AIF, IFF or OGG through the Sample > Save... menu. Still Can't Open Your File? If you can't get your file to open, double-check the file extension and make sure it actually reads ".MTS," else you might be dealing with a totally different file extension that just looks like MTS. As you can see above, some file formats use the exact same file extension even if the formats have little or nothing to do with each other. The same is true for file extensions that are spelled similarly; it doesn't necessarily mean that the formats are related or that the files can open with the same program. For example, MAS files share two of the same file extension letters as MTS files but are instead associated with programs like Microsoft Access and Image Space rFactor. However, to make this even more complicated, MAS files are actually compatible with MEGA as well (they're MEGA Alignment Sequence files)! MST files, however, share all three of the same letters but are unique in that they're either Windows Installer Setup Transform files used by the Windows OS or a template file that can open with the Corel Presentations program.