Convert AVI to MTS (AVCHD) online for free. Prepare video for Blu-ray authoring and HD camcorder workflows.
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Supports: AVI
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Need help?How to Convert AVI to MTS
- Upload Your AVI File — Click "Choose Files" or drag and drop your AVI video file. Only .avi files are accepted.
- Choose Video Codec — Under Video Codec, the default for MTS output is H.264.
- Set Video Quality — Under File Compression, choose from: Quality Preset (Highest through Lowest), Target File Size % (1-100% slider with Smart Scaling), Specific File Size (MB/KB), Constant Bitrate, Variable Bitrate, or Constant Quality (CRF).
- Set Audio Codec — Under Audio Codec, the default for MTS is AAC. AC3 (Dolby Digital) is common for AVCHD workflows.
- Adjust Resolution (Optional) — Under Video Resolution, keep the original or choose Preset Resolutions (1080p, 720p, 480p, etc.) or custom dimensions.
- Trim (Optional) — Under Trim, set a Start Time and Duration to extract a specific segment.
- Convert & Download — Click "Convert" and download your MTS file.
Why Convert AVI to MTS?
AVI is Microsoft's legacy video container from 1992. MTS (MPEG Transport Stream) is the AVCHD format developed by Sony and Panasonic for HD camcorders. Converting AVI to MTS bridges vintage footage into modern HD workflows — useful for importing AVI recordings into AVCHD-based editing software, preparing video for Blu-ray disc authoring, maintaining compatibility with Sony/Panasonic camcorder media management, and broadcasting workflows requiring transport stream containers.
AVI vs MTS Comparison
| Feature | AVI | MTS (AVCHD) |
|---|---|---|
| Developer | Microsoft (1992) | Sony/Panasonic (2006) |
| Video codec | DivX, Xvid (typical) | H.264 (default) |
| Audio codec | MP3 (typical) | AAC (default) |
| Error correction | None | Built-in (transport stream) |
| Blu-ray compatible | No | Yes (native) |
| Best for | Legacy Windows playback | Blu-ray, HD camcorder workflows |
Should I use AC3 or AAC audio?
For Blu-ray authoring, use AC3 (Dolby Digital) — the standard for Blu-ray discs. For general AVCHD use, AAC (default) works well and produces smaller files.
Will the file size change?
H.264 is more efficient than DivX/Xvid. AVI files with older codecs often become smaller as MTS with H.264 at equivalent quality.
Can I trim the video during conversion?
Yes. Under Trim, select "Time Range" and enter a Start Time and Duration.
What is the difference between MTS and M2TS?
MTS is the raw transport stream. M2TS adds a 4-byte timestamp header. Both contain the same video/audio data.
What resolution for Blu-ray?
Use 1080p (1920×1080) or 720p (1280×720) under Video Resolution with H.264 video and AC3 audio.