How to Convert MTS to M2TS — Quick & Free
Fast, instant MTS to M2TS conversion. No signup required. Just drop your .mts file and get .m2ts in seconds.
Batch Settings
Generation loss — quality may degrade
MTS uses lossy compression, and so does M2TS. Converting means decoding and re-encoding — each cycle can permanently degrade quality. Convert from the original source file whenever possible.
Some metadata may not survive
Your MTS file may contain AVCHD metadata metadata. M2TS has limited or no support for these metadata types. Location data (GPS), camera settings, and color profiles may be stripped during conversion.
What compression artifacts to expect
M2TS lossy compression can produce H.264/MPEG-4 AVC artifacts. At the high quality settings CocoConvert uses by default, these are usually invisible to the eye. Lower quality settings trade visual fidelity for smaller file sizes.
ホームビデオカメラで撮影した大切な思い出や、業務で扱う高画質な映像素材。MTS形式はAVCHD規格で広く利用されていますが、編集ソフトとの相性や再生環境によっては、より汎用性の高いM2TS形式への変換が求められることがあります。特に、日本の映像制作現場では、異なるベンダーの機器が混在することも多く、スムーズなワークフローを確立するためには、フォーマットの互換性が鍵となります。このページでは、MTSファイルをM2TSへ変換する意義と、その簡単な手順についてご紹介します。あなたの大切な映像資産を、より多くの環境で活用できるよう、お手伝いいたします。
- アニメ制作における素材共有
- ビジネス会議録画のアーカイブ
- 縦書き字幕の組み込み前処理
日本のBlu-rayレコーダーや一部のメディアプレーヤーでは、MTSよりもM2TSの方が安定して再生できるケースが多く見られます。
About MTS to M2TS Conversion
Short answer: yes, you can convert MTS to M2TS online for free, and some quality differences may occur depending on the format types. Just upload your .mts file to CocoConvert, pick M2TS as the output, and click Convert. The whole process takes seconds.
Now for the details. MTS (AVCHD) is the format from camcorders recording in high-definition AVCHD. M2TS is the Blu-ray disc transport stream format used for high-definition recordings. Converting between these two formats lets you convert between formats quickly.
Full Name: MTS uses AVCHD Video, while M2TS uses Blu-ray Transport Stream. Compression: MTS uses Lossy, while M2TS uses Lossy. Color Depth: MTS uses 8-bit, while M2TS uses 8-bit.
Your MTS file is decoded and re-encoded as M2TS. MTS uses lossy compression, and so does M2TS. Converting means decoding and re-encoding — each cycle can permanently degrade quality. Convert from the original source file whenever possible.
Common misconception: ""I'll convert to M2TS and then back to MTS — it'll be the same"" — in reality, each lossy conversion cycle permanently degrades quality. going mts → m2ts → mts will produce a noticeably worse file than the original. always keep your source file.
CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.
Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.
How to Convert MTS to M2TS
- 1
1. Upload MTS
Drop your .mts file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select M2TS
Choose .m2ts from the output dropdown. Settings are pre-configured for best results.
- 3
3. Convert
One click. The server handles all the heavy lifting using FFmpeg and Sharp.
- 4
4. Download
Your .m2ts file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert MTS to M2TS
Your MTS video is transcoded — video and audio streams are decoded and re-encoded into the M2TS container. This is a lossy process that takes time proportional to the video duration.
Your MTS file is demuxed — video, audio, and subtitle streams are separated
The video stream is decoded frame-by-frame, then re-encoded with M2TS-compatible codecs (typically H.264 for MP4)
The audio stream is decoded and re-encoded (or copied if the codec is compatible)
Subtitle and chapter data is preserved where the target supports it
Streams are muxed into the M2TS container and the file is saved
MTS vs M2TS — Detailed Comparison
| Feature | .MTS | .M2TS |
|---|---|---|
| Full Name | AVCHD Video | Blu-ray Transport Stream |
| Compression | Lossy | Lossy |
| Color Depth | 8-bit | 8-bit |
| HDR Support | No | No |
| Typical File Size | 100–200 MB per minute | 200–500 MB per minute (Blu-ray quality) |
| Platform Support | Limited | Limited |
| Browser Support | none | none |
| Year Created | 2006 | 2006 |
| Open Standard | No | No |
Should You Convert MTS to M2TS?
When to Convert
- ✓When you specifically need a M2TS file for your workflow
When NOT to Convert
- ✗You're converting just because the file "seems old" — re-encoding lossy-to-lossy always degrades quality
Common Mistakes When Converting MTS to M2TS
"I'll convert to M2TS and then back to MTS — it'll be the same"
Each lossy conversion cycle permanently degrades quality. Going MTS → M2TS → MTS will produce a noticeably worse file than the original. Always keep your source file.
Frequently Asked Questions
Is MTS to M2TS conversion free?
Yes. CocoConvert offers free MTS to M2TS conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.
How fast is MTS to M2TS conversion?
Most files convert in 2–10 seconds depending on size. Large video files may take 30 seconds. Batch jobs process in parallel for maximum speed.
What happens to my files after conversion?
Your uploaded MTS file and the converted M2TS file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting MTS to M2TS lose quality?
MTS uses lossy compression, and so does M2TS. Converting means decoding and re-encoding — each cycle can permanently degrade quality. Convert from the original source file whenever possible.
Can I convert M2TS back to MTS?
Yes, CocoConvert supports M2TS to MTS conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
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