Convert MTS to MP4
Turn AVCHD camcorder clips and transport-stream recordings into MP4.
Files are processed on our server in Europe. Download links expire after 60 minutes; files are then deleted automatically.
Why use Video Compressor
Private and secure
Your video is sent over an encrypted connection to our server in Europe and stored under a random ID. It is never shared with third parties or used to train AI. Download links expire after 60 minutes; files are then deleted automatically, normally within 75 minutes. Read the privacy policy
Honest results
Choose quality and resolution. Progress comes from the encoder itself, and the result shows the exact size of your MP4 next to the original.
Free, no sign-up
Video Compressor is free with no account, no watermark and no ads. It works in any modern browser on phone or desktop.
In short
MTS to MP4 converts AVCHD camcorder clips (.mts, .m2ts) and MPEG transport streams (.ts) into MP4 with H.264 video and AAC audio. Interlaced 1080i footage is deinterlaced automatically, and AC-3 audio becomes stereo AAC. Files up to 1 GB and 30 minutes are supported.
| Accepted formats | MP4, MOV, M4V, 3GP, WebM, MKV, AVI, WMV, FLV, MPEG, MTS/TS, OGV |
|---|---|
| Maximum file size | 1.00 GB |
| Output | MP4 (H.264 video, AAC audio), max 1080p, never upscaled |
| Video limits | Up to 30 minutes, up to 4K input |
| Target size | Not on converter pages; the video compressor sets target sizes |
| Units | 1 KB = 1,000 bytes; 1 MB = 1,000,000 bytes |
| Where files are processed | On our server in Europe; not sent to third parties |
| Retention | Download link expires after 60 minutes; files deleted automatically, normally within 75 minutes |
| Price | Free, no account, no watermark |
| Typical sources | Sony, Panasonic and Canon AVCHD camcorders, Blu-ray rips, TV and IPTV recordings |
| Codecs read | H.264 and MPEG-2 video; AC-3, AAC and MP2 audio |
How to use it
- Choose or drop your MTS file (up to 1 GB, 30 minutes), or import it from a link.
- Keep the High quality preset, or pick a lower resolution if you also want a smaller file.
- Select Convert to MP4 and keep the tab open while it uploads and converts.
- Preview the MP4 and download it.
Why convert MTS to MP4?
AVCHD camcorders save clips as .MTS inside a BDMV/STREAM folder. Phones, many TVs and social apps don't recognise them, and 1080i footage shows comb-like lines on computer screens. MP4 plays everywhere and is ready to edit.
Finding your clips and interlacing
- On the camcorder's card, open PRIVATE › AVCHD › BDMV › STREAM. Each .MTS file is one clip; convert them one at a time.
- Interlaced video (1080i, 576i, 480i) is detected and deinterlaced, so motion looks smooth instead of combed.
- 5.1 surround sound is mixed down to stereo AAC.
Questions
Is MTS to MP4 conversion lossless?
No. The video is re-encoded to H.264, which is lossy, but converter pages start at the High quality preset, where the difference is hard to see at normal viewing size. The picture is never upscaled, and the shorter side is capped at 1080 pixels.
Can I join several MTS clips into one MP4?
Not yet. Each file is converted separately. Joining clips needs a video editor.
What happens to my file after conversion?
It's stored under a random ID on our server in Europe. The download link expires after 60 minutes and the file is then deleted automatically, normally within 75 minutes. Canceling deletes it immediately.
Convert other formats to MP4
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- Video compressorMake any video smaller, with a target size.
Last reviewed October 31, 2026.