MTS (MPEG Transport Stream) is the file format used by AVCHD camcorders from Sony, Panasonic, Canon, and other manufacturers. When you record HD video with a camcorder, the footage is saved as .mts or .m2ts files. These files contain high-quality H.264 video but have limited compatibility outside of dedicated video editing software.
MTS files won't play on most phones, tablets, smart TVs, or web browsers. MP4 is universally compatible — convert once and play anywhere.
YouTube, Instagram, Facebook, and other platforms accept MP4 but not MTS. Converting lets you share your camcorder footage online.
While professional editors (Premiere Pro, Final Cut) handle MTS, many consumer editors (iMovie, CapCut, Canva) work better with MP4. Converting avoids import errors and timeline issues.
MTS files from camcorders are often larger than necessary. Converting to MP4 with modern H.264 encoding can reduce file size by 30-50% while maintaining visual quality.
On the SD card or internal storage, look in the PRIVATE/AVCHD/BDMV/STREAM/ folder. Files are named like 00001.mts, 00002.mts, etc.
At default settings, the quality difference is imperceptible. XConvert uses high-quality H.264 encoding that preserves the original 1080p resolution and detail.
M2TS is essentially the same format as MTS. XConvert handles both identically.
Yes. Upload multiple MTS files and convert them all to MP4 with the same settings.
Yes. Completely free with no watermarks, no sign-up required, and no file count limits.
Yes. Works in any modern browser on all devices — no app installation required.