Convert MTS to MP4, Free
Upload your MTS file and get a MP4 in seconds. No account, no watermark.
How to convert MTS to MP4
MTS (MPEG Transport Stream) is the recording format used by AVCHD (Advanced Video Codec High Definition) camcorders from Sony, Panasonic, and Canon. When you copy video from an AVCHD camcorder to your computer, the clips have the .mts or .m2ts extension. These files use H.264 video and AC-3 audio in an MPEG-2 transport stream container, which many editing apps and devices do not natively support.
Converting MTS to MP4 re-wraps the H.264 video from the transport stream into a standard MP4 container. Since the video codec is already H.264, re-encoding is usually not required, meaning conversion is fast and the quality is unchanged. BoltConverter handles this on our servers and deletes both files immediately after your download.
Upload your MTS file
Click the upload area or drag your .mts or .m2ts file from your camcorder footage onto the page.
H.264 streams are moved to MP4
BoltConverter extracts the H.264 video and AC-3 audio from the transport stream and re-wraps them in an MP4 container.
Download the MP4
Click Download to save the MP4 file for use in editing, sharing, or playback on any device.
Frequently asked questions
Will there be quality loss when converting MTS to MP4?
No. Since MTS files already contain H.264 video, BoltConverter re-wraps the stream without re-encoding it. The video quality is identical to the original recording.
What is the difference between MTS and M2TS?
MTS and M2TS are essentially the same format. MTS is the file extension used when the file is on the camcorder memory card; M2TS is the extension used after copying to a computer. Both contain the same AVCHD data.
My editing software cannot read MTS files. Will the MP4 work?
Yes. Converting to MP4 wraps the video in a container that virtually all editing software, including Adobe Premiere, Final Cut Pro, and DaVinci Resolve, can read natively.
Is there a file size limit?
MTS files up to 500 MB are supported. AVCHD camcorder clips are typically split into 2-4 GB segments, so standard clips will be within the limit.
Are my files stored after conversion?
No. Both the uploaded MTS and the converted MP4 are deleted from our servers immediately after you download the result.