How does the MTS to MP4 converter work?

Upload your MTS clips and start the conversion. FFmpeg converts the AVCHD camcorder video and Dolby Digital or LPCM sound into an MP4 that phones, browsers and editors play.

Can I use the converter without signing up?

Yes. You can upload, convert and download without an account. Free use has a daily limit, and a $2.99 or $6.99 pass removes it, with no monthly subscription.

Are there file-size limits?

Each MTS file can be up to 20GB.

Does this work in a mobile browser?

Yes. dragdropdo runs in Safari, Chrome and other mobile browsers on iPhone, iPad and Android, so you can convert MTS files on a phone or tablet without installing an app.

Can I batch convert MTS files?

Yes. Add several MTS files to one job, then download each MP4 file on its own or all of them together as a ZIP.

Is the video re-encoded?

Only when it has to be. Progressive H.264, such as 1080p recordings, is copied into the MP4 unchanged, so the picture is identical and conversion is fast; only the sound is converted. Interlaced 1080i is deinterlaced and re-encoded to H.264 at high quality.

What frame rate and size does 1080i footage get?

Interlaced video gets one picture per frame: 50i becomes 25p and 59.94i becomes 29.97p. Recordings made at 1440x1080 come out as 1920x1080.

What happens to the sound?

Dolby Digital (AC-3) stereo or 5.1 and LPCM sound become AAC with the same number of channels. 5.1 sound uses a standard 5.1 layout.

My recording was split into several MTS files. Are they joined?

No. Camcorders split long recordings into several MTS files, and each one converts to its own MP4. The parts are not joined.

Is MTS the same as M2TS?

Both are MPEG transport streams. Camcorders name the clips .MTS on the card, while Blu-ray discs and some camera software use .M2TS. MTS files with the plain 188-byte TS packets of other recorders also convert.

What if the clip cannot be converted?

A damaged or unreadable file gets 'This file could not be read as a video…'. A file with sound but no picture gets 'This file has no video picture to convert…'. Nothing is delivered in either case.

How does the MTS to MP4 converter work?

Upload your MTS clips and start the conversion. FFmpeg converts the AVCHD camcorder video and Dolby Digital or LPCM sound into an MP4 that phones, browsers and editors play.

Can I use the converter without signing up?

Yes. You can upload, convert and download without an account. Free use has a daily limit, and a $2.99 or $6.99 pass removes it, with no monthly subscription.

Are there file-size limits?

Each MTS file can be up to 20GB.

Does this work in a mobile browser?

Yes. dragdropdo runs in Safari, Chrome and other mobile browsers on iPhone, iPad and Android, so you can convert MTS files on a phone or tablet without installing an app.

Can I batch convert MTS files?

Yes. Add several MTS files to one job, then download each MP4 file on its own or all of them together as a ZIP.

Is the video re-encoded?

Only when it has to be. Progressive H.264, such as 1080p recordings, is copied into the MP4 unchanged, so the picture is identical and conversion is fast; only the sound is converted. Interlaced 1080i is deinterlaced and re-encoded to H.264 at high quality.

What frame rate and size does 1080i footage get?

Interlaced video gets one picture per frame: 50i becomes 25p and 59.94i becomes 29.97p. Recordings made at 1440x1080 come out as 1920x1080.

What happens to the sound?

Dolby Digital (AC-3) stereo or 5.1 and LPCM sound become AAC with the same number of channels. 5.1 sound uses a standard 5.1 layout.

My recording was split into several MTS files. Are they joined?

No. Camcorders split long recordings into several MTS files, and each one converts to its own MP4. The parts are not joined.

Is MTS the same as M2TS?

Both are MPEG transport streams. Camcorders name the clips .MTS on the card, while Blu-ray discs and some camera software use .M2TS. MTS files with the plain 188-byte TS packets of other recorders also convert.

What if the clip cannot be converted?

A damaged or unreadable file gets 'This file could not be read as a video…'. A file with sound but no picture gets 'This file has no video picture to convert…'. Nothing is delivered in either case.

Free MTS to MP4 Converter Online

Convert MTS to MP4 online and play Sony, Panasonic and Canon camcorder clips on any phone, TV or browser. Upload files up to 20GB and download the converted result in a few clicks.

Drag & Drop your MTS file here

MTS files, up to 20GB

Files stay private.

Automatically deleted after 24 hours.

Link 20GB upload limit.

4.8/5

Trusted for 1,827,796+ conversions

HOW IT WORKS

Convert MTS to MP4 in three steps

Three steps, no account, nothing to install.

Add your MTS clips

Copy the .MTS files from the camera's PRIVATE/AVCHD/BDMV/STREAM folder or memory card and drop them here.

Convert to MP4

Progressive H.264 is copied into the MP4 as it is. Interlaced 1080i is deinterlaced and re-encoded to H.264. Dolby Digital or LPCM sound becomes AAC.

Download the MP4

You get one MP4 per clip. Download them one by one or together as a ZIP.

MTS

MTS is the video file of the AVCHD format recorded by Sony, Panasonic and Canon camcorders. It is an MPEG transport stream with H.264 video and Dolby Digital (AC-3) or LPCM sound, stored in the PRIVATE/AVCHD/BDMV/STREAM folder of the memory card. Phones, browsers and many apps do not open it directly.

MP4

MP4 (MPEG-4 Part 14) is the most widely supported video format. With H.264 video and AAC sound, as made here, it plays on iPhone and Android phones, smart TVs, Windows and Mac, every modern browser, and imports into common video editors.

FILE FORMATS

MTS and MP4 compared

SOURCE

MTS

AVCHD camcorders from Sony, Panasonic, Canon and JVC record .mts clips inside a PRIVATE/AVCHD/BDMV/STREAM folder. Each clip is an MPEG transport stream with H.264 video, often 1080i interlaced, and Dolby Digital or LPCM sound. Phones, browsers and many editors don't handle MTS directly, and long recordings are split into several files.

TARGET

MP4

MPEG-4 Part 14 is the default container for phone recordings, web video and streaming. MP4 with H.264 video and AAC sound plays on iPhone and Android, in every browser, on smart TVs and in Windows and Mac players without extra codecs. It holds text subtitles and chapters, but not picture-based subtitles.

Feature	MTS	MP4
Developed by	Sony and Panasonic (AVCHD)	MPEG (ISO)
File extension	.mts	.mp4
Usual video codec	H.264, often interlaced	H.264, HEVC, AV1
Usual audio codec	Dolby Digital, LPCM	AAC
Subtitles	No	Text only
Best for	Camcorder recordings	Sharing and playback anywhere
Plays on phones and browsers	Some players; not iPhone	Yes

USE CASES

Use Cases for MTS to MP4

Practical workflows where MTS to MP4 conversion is useful.

Watch camcorder clips on a phone or TV

Convert the clips from an AVCHD camcorder and play them on a phone, tablet or smart TV without the camera's software.

Rescue old camcorder memory cards

Family videos from AVCHD camcorders sit on old SD cards and hard drives. Convert them to MP4 so they stay easy to open.

Share family videos in chat apps and cloud albums

Chat apps and photo libraries handle MP4 far better than .MTS. Convert the clip first, then send or upload it.

Remove comb lines from 1080i footage

Interlaced 1080i video shows comb lines on computer screens. The MP4 is deinterlaced to 25p or 29.97p.

Fix 1440x1080 recordings

Camcorders that record 1440x1080i store a horizontally squeezed picture. The deinterlaced MP4 comes out as full 1920x1080, so it shows at the right width everywhere.

Keep 5.1 surround from the camera

Camcorders with a 5.1 microphone record Dolby Digital 5.1. The MP4 keeps all six channels as AAC 5.1.

Convert long 1080p clips quickly

Progressive 1080p clips are not re-encoded: only the sound is converted, so even long clips finish fast.

Hand event footage to clients

Videographers using AVCHD cameras can deliver MP4 files that clients open with a double-click.

Edit in phone and web editors

Phone editors and browser-based editors often reject .MTS. As MP4 the clip imports directly.

Share sports and school recordings

Coaches and parents can put game and performance recordings into a shared drive as MP4 that previews in the browser.

SUPPORTED FILES

Which MTS Files Can I Convert?

AVCHD clips from camcorders are supported.

Sony Handycam clips

MTS files from the AVCHD folder.

Panasonic, Canon and JVC camcorders

Any AVCHD .mts clip.

1080i interlaced video

Deinterlaced for smooth playback on screens.

Dolby Digital and LPCM sound

Converted to AAC.

Many clips

Upload a whole card and download the MP4s as a ZIP.

TROUBLESHOOTING

MP4 Not Playing Right?

These explain most differences from the original file.

A long recording is split into several MP4s

Camcorders split long recordings into several .mts files, and each one converts separately.

I copied the card and can't find the clips

Look in PRIVATE/AVCHD/BDMV/STREAM on the card.

Fast motion looked jagged before

1080i is interlaced. The MP4 is deinterlaced so motion looks smooth on computers and phones.

Clip dates are wrong

Some camera metadata doesn't carry into MP4. File names and folders keep their order.

The MP4 is a different size

Re-encoded video at high quality can be larger or smaller than the original, depending on how it was compressed.

It says the file can't be read

The file is damaged, protected or not really the format its name says. Copy it again from the source.

COMPARISON

dragdropdo vs. Desktop Video Converters

HandBrake, VLC and FFmpeg give you every setting once installed. dragdropdo is built for turning MTS into MP4 with sensible settings already chosen, from any device.

What matters	dragdropdo	Desktop Video Converters
Nothing to install	✓Yes. Runs in any modern browser.	~Yes, a download. FFmpeg also needs the command line.
Works on phones and tablets	✓Yes. Desktop, Android, iPhone and iPad.	~Mostly desktop only.
Batch conversion	✓Yes. Add many files and download one ZIP.	~HandBrake has a queue; FFmpeg needs scripts.
Share finished files	✓Yes. Send a unique link from the result page.	~You upload and share the files yourself.
Pricing	✓Free with daily limits. $2.99 or $6.99 passes for unlimited use, no monthly plan.	~Free (HandBrake, VLC, FFmpeg).
Quality and size settings	✓Chosen for you for MP4, with nothing to tune.	~Yes. Full control over codecs, bitrate and resolution.

Other tools use different pricing, limits and workflows. This comparison describes dragdropdo's own features without assuming every other tool works the same way.

1.8M+

Files converted

and counting

4.8

Average rating

from our users

~4s

Avg. conversion

per file

Files kept

Auto-delete in 24h

WHY DRAGDROPDO

Built to be quick, safe, and free

Convert MTS to MP4 in your browser, with nothing to install and nothing kept after 24 hours.

Private by default

Files are encrypted in transit and deleted from our servers automatically after 24 hours.

No install required

Convert in any modern browser on Windows, Mac, Linux, Android, iPhone or iPad. No app and no sign-up wall.

Big files and batches

Upload files up to 20GB each, add several at once, and download the results one by one or as a ZIP.

Share & download

Save finished files to your device or pass them on with a share link from the result page.

FAQ

Frequently Asked Questions

Answers to common questions about dragdropdo's MTS to MP4 converter.