Video to MTS Converter

How to Convert Video to MTS Online

1. Upload Your Video Files: Drag and drop or click "Add Files" to select source video. Supported inputs include MP4, MKV, MOV, AVI, WebM, WMV, FLV, MPG/MPEG, TS, M2TS, VOB, 3GP, AV1, HEVC, MXF, and many more (37 formats total). Batch is supported.
2. Pick a Quality Preset: Default is Very High (Recommended). Choose Highest for archival, High or Medium for balanced size, or Low / Very Low / Lowest if you need a smaller file. Output defaults to H.264 video + AC-3 audio — the AVCHD-standard codec pair — and both are changeable under Advanced Options if you need MPEG-2 video or PCM audio for a specific Blu-ray authoring chain.
3. Set Resolution and File Compression (Optional): Pick a Preset Resolution (4320p down to 144p), set a Resolution Percentage, or enter exact Width × Height. Under File Compression, switch between Constant Bitrate, Variable Bitrate, Constant Quality, or Constraint Quality to control bitrate ceilings — useful when you need to stay inside the AVCHD 24 Mbps cap.
4. Trim and Convert: Use Trim / Time Range to cut to a start time and duration in seconds or HH:MM:SS.sss. Click Convert. Files process on our servers and download as .mts — no sign-up, no watermark.

Why Convert Video to MTS?

MTS is the on-camcorder file extension for AVCHD, a high-definition recording format developed jointly by Sony and Panasonic and introduced in 2006. It packages H.264/AVC video and Dolby AC-3 (or LPCM on professional models) into an MPEG transport stream, with a maximum bitrate of 24 Mbit/s for original AVCHD and 28 Mbit/s in AVCHD 2.0 Progressive. Converting an arbitrary video to MTS produces a file that matches what AVCHD camcorders write to SD card, which keeps it compatible with downstream consumer tooling that expects that exact stream layout.

• Importing into AVCHD-aware editors — Sony Vegas Pro, Vegas Movie Studio, and Panasonic HD Writer have native AVCHD ingest paths that expect .mts containers; feeding them an .mts skips a transcode step.
• Mixing footage with existing camcorder rips — If you've already got an AVCHD card import on disk and want to add a screen-recorded clip or a downloaded video to the same timeline, matching the codec/container avoids the editor flagging a "mixed sequence" warning.
• AVCHD disc authoring — AVCHD on DVD-R / DVD+R lets you fit short HD content on cheap blank media that plays in AVCHD-compatible Blu-ray players. Authoring tools (TMPGEnc Authoring Works, Corel VideoStudio) want .mts input.
• Sony / Panasonic / Canon HD camera replay chains — Some legacy AVCHD camcorders can play user-supplied .mts files back from the SD card via the BDMV folder structure, useful for tethered review or trade-show looping.
• Playback on AVCHD-only devices — Older AVCHD-format Blu-ray players, PS3, and some 2009-2014 smart TVs play .mts directly off USB but choke on MP4 with the wrong codec profile.
• Archival to match camcorder originals — When backing up an old shoot, keeping every clip in .mts keeps file naming and metadata consistent with the original 8.3-filename camcorder layout.

MTS vs M2TS vs MP4 — Format Comparison

The container is identical between MTS and M2TS — only the filename convention differs. AVCHD camcorders store as .MTS because the on-card file system inherits the legacy 8.3 filename rule; the same packet stream becomes .m2ts once copied to a Blu-ray disc layout that allows long filenames.

AVCHD Resolution and Bitrate Reference

If you need 4K (3840×2160), you're outside the AVCHD spec — the format tops out at 1080p. Use MP4 or M2TS / MKV instead.

Frequently Asked Questions

What is the difference between MTS and M2TS?

The container is the same MPEG transport stream — the difference is purely the filename convention. AVCHD camcorders write .MTS because the SD card uses the older 8.3 filename rule; the same stream is named .m2ts on Blu-ray discs and after computer import on systems that allow long filenames. xconvert outputs .mts here; if you specifically need .m2ts, use Video to M2TS instead.

Will my MTS output play on a Blu-ray player or PS3?

If the player supports the AVCHD format and you keep the encoder inside the AVCHD constraints (H.264, AC-3 audio, ≤ 24 Mbit/s for original AVCHD or ≤ 28 Mbit/s for AVCHD 2.0 Progressive, 1080p or below), yes. PS3 and most 2008+ Blu-ray players play AVCHD off USB. For AVCHD on DVD-R, the disc must be authored in the AVCHD folder layout (BDMV/STREAM) — a raw .mts dropped onto a data DVD will not play. AVCHD-on-DVD discs require a player that explicitly supports AVCHD.

What's the maximum bitrate I should set?

Stay at or below 24 Mbit/s if you want a file that conforms to the original AVCHD spec, or 28 Mbit/s if you're targeting AVCHD 2.0 Progressive (1080p50 / 1080p60). Going higher produces a transport stream that still plays in software (VLC, mpv) but may be rejected by hardware AVCHD players that strictly enforce the spec. Use Constant Bitrate or Constraint Quality under File Compression to enforce the ceiling.

Should I keep the default H.264 + AC-3?

Yes for AVCHD compatibility. H.264 video plus AC-3 audio is the AVCHD-standard pair, and any device that advertises AVCHD support expects exactly that codec combination. Switch to MPEG-2 / PCM only if a specific authoring chain (older Vegas plug-ins, certain Blu-ray authoring suites) requires it.

Why convert to MTS instead of MP4?

Most modern workflows are happier with MP4 — it streams, plays on every browser, and is half the headache. Convert to MTS specifically when (a) you're feeding an AVCHD-aware editor or authoring tool that wants .mts input, (b) you're matching existing camcorder originals on a timeline, or (c) you're authoring an AVCHD disc. For general playback or sharing, MP4 is almost always the better choice; if you're going the other direction from camcorder footage, MTS to MP4 is the common path.

Can I trim during conversion?

Yes. Set a start time and duration under Trim / Time Range (seconds or HH:MM:SS.sss). Only the selected segment is encoded, which is faster and produces a smaller output than converting the whole clip and trimming afterward. Useful for pulling a single take out of a long camcorder reel before importing to Vegas.

Will MTS files import cleanly into Sony Vegas / DaVinci Resolve / Premiere?

Sony Vegas Pro and Vegas Movie Studio have native AVCHD ingest and accept .mts directly. DaVinci Resolve and Adobe Premiere Pro also import .mts — Resolve in particular has been known to stutter on long-GOP H.264 from some camcorders, and the standard fix is transcoding to DNxHR or ProRes for the timeline. If your editor flags a .mts you produced here as "unrecognized," double-check that the codec stayed at H.264 and audio at AC-3.

What's the maximum file size or file count?

There's no artificial cap on the converter — the practical limit is your upload size and connection speed, since the conversion runs on our servers. A few hundred MB to a couple of GB per file uploads comfortably on a typical connection; tens-of-GB camera reels are better split first. Batch conversion is supported, with each file processed independently and downloaded individually or as a ZIP.

Does AVCHD support 4K?

No. AVCHD tops out at 1920×1080. The 4K successor format from Sony / Panasonic is XAVC / XAVC S (and Panasonic's AVCHD-Pro), which are separate specs. If you need 4K output, convert to MP4 or MKV instead.