How to Convert MTS to OPUS — Quick & Free
Fast, instant MTS to OPUS conversion. No signup required. Just drop your .mts file and get .opus in seconds.
Batch Settings
Generation loss — quality may degrade
MTS uses lossy compression, and so does OPUS. 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. OPUS 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
OPUS lossy compression can produce minimal artifacts even at low bitrates. 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.
About MTS to OPUS Conversion
Short answer: yes, you can convert MTS to OPUS online for free, and some quality differences may occur depending on the format types. Just upload your .mts file to CocoConvert, pick OPUS 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. Opus is a versatile open codec excelling at both speech and music, used in WebRTC and Discord. Converting between these two formats lets you convert between formats quickly.
Full Name: MTS uses AVCHD Video, while OPUS uses Opus Audio. Compression: MTS uses Lossy, while OPUS uses Lossy. Color Depth: MTS uses 8-bit, while OPUS uses —.
Your MTS file is decoded and re-encoded as OPUS. MTS uses lossy compression, and so does OPUS. 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 OPUS and then back to MTS — it'll be the same"" — in reality, each lossy conversion cycle permanently degrades quality. going mts → opus → 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 OPUS
- 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 OPUS
Choose .opus 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 .opus file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert MTS to OPUS
The audio track is extracted from your MTS video file and saved as OPUS. The video frames are discarded.
Your MTS file is opened and the container is parsed to identify audio and video streams
The audio stream is extracted — if it's already in the target codec, it's copied directly (no quality loss)
If transcoding is needed, the audio is decoded and re-encoded as OPUS
Video frames, subtitles, and chapter markers are discarded
The OPUS file is saved with preserved metadata (title, artist, etc.) where possible
MTS vs OPUS — Detailed Comparison
| Feature | .MTS | .OPUS |
|---|---|---|
| Full Name | AVCHD Video | Opus Audio |
| Compression | Lossy | Lossy |
| Color Depth | 8-bit | — |
| HDR Support | No | — |
| Typical File Size | 100–200 MB per minute | 0.5–1 MB per minute at 96 kbps (near-transparent quality) |
| Platform Support | Limited | Limited |
| Browser Support | none | modern browsers |
| Year Created | 2006 | 2012 |
| Open Standard | No | Yes |
Should You Convert MTS to OPUS?
When to Convert
- ✓You need just the audio track from a video recording
- ✓You're creating a podcast or audio file from video content
- ✓You need a file that works in web browsers
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 OPUS
"I'll convert to OPUS and then back to MTS — it'll be the same"
Each lossy conversion cycle permanently degrades quality. Going MTS → OPUS → MTS will produce a noticeably worse file than the original. Always keep your source file.
Frequently Asked Questions
Is MTS to OPUS conversion free?
Yes. CocoConvert offers free MTS to OPUS 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 OPUS 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 OPUS file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting MTS to OPUS lose quality?
MTS uses lossy compression, and so does OPUS. Converting means decoding and re-encoding — each cycle can permanently degrade quality. Convert from the original source file whenever possible.
Can I convert OPUS back to MTS?
Yes, CocoConvert supports OPUS to MTS conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.