Convert MTS to FLV

MTS to FLV converter that runs entirely in your browser. 100% free, no signup, no upload — your files never leave your device. One-click batch conversion.

Conversions

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All file types supported

About formats

MTS

MTS is the file extension used for MPEG-2 Transport Stream files recorded by AVCHD camcorders. MTS files contain H.264 video and AC-3 or PCM audio and are commonly produced by Sony, Panasonic, and other consumer camcorders.

Developer: Sony / Panasonic
Initial release: 2006
Compression: Lossy
Color depth: up to 12-bit
Transparency: No
Animation: Yes

Best for

AVCHD camcorder file playback
Editing Sony and Panasonic footage
Archiving consumer HD recordings
Converting camcorder video to MP4
High-definition home video storage

Pros

+Standard AVCHD camcorder output
+Contains H.264 video and AC-3/PCM audio
+Good HD quality in compact files
+Recognized by VLC and editing tools

Cons

−Tied to AVCHD folder conventions
−Less convenient than MP4 for sharing
−Limited metadata support
−Aging format for modern cameras

FLV

FLV (Flash Video) is a container format used to deliver video over the web using Adobe Flash Player. Although Flash has been discontinued, FLV files remain common in older video archives. FLV typically wraps Sorenson Spark or VP6 video and MP3 or AAC audio.

Developer: Adobe (Macromedia)
Initial release: 2002
Compression: Lossy
Color depth: 8-bit
Transparency: No
Animation: Yes

Best for

Recovering legacy Flash video archives
Migrating old web video content
Playing retro web animations
Archiving early-2000s online video
Converting old streaming clips

Pros

+Compact streaming for its era
+Wrapped common codecs like Sorenson Spark and VP6
+Widely used in historical web video
+Simple container structure

Cons

−Flash Player discontinued and unsupported
−Low maximum quality and 8-bit color
−No modern codec or HDR support
−Security risks in legacy Flash runtime

How to convert MTS to FLV

1
Select MTS files from your computer, Google Drive, Dropbox, a URL, or by dragging them onto the page.
2
Choose flv — or any other format you need as a result (more than 200 formats supported).
3
Let the file convert, then download your flv file right away.

MTS vs FLV

Property	MTS	FLV
Compression	Lossy	Lossy
Color depth	up to 12-bit	8-bit
Multi-track	Yes	Yes
DRM support	No	No
Open format	No	No

When to use MTS vs FLV

MTS

AVCHD camcorder file playback
Editing Sony and Panasonic footage
Archiving consumer HD recordings
Converting camcorder video to MP4
High-definition home video storage

FLV

Recovering legacy Flash video archives
Migrating old web video content
Playing retro web animations
Archiving early-2000s online video
Converting old streaming clips

Use cases for MTS → FLV

AVCHD camcorder file playback
Editing Sony and Panasonic footage
Archiving consumer HD recordings
Converting camcorder video to MP4
High-definition home video storage
Recovering legacy Flash video archives
Migrating old web video content
Playing retro web animations
Archiving early-2000s online video
Converting old streaming clips

Frequently Asked Questions

Is converting MTS to FLV free?

Yes. This MTS → FLV converter runs entirely in your browser and is completely free — no account, no credits, no watermark.

Which devices and platforms can I use to convert MTS to FLV?

Any modern device with a current web browser: Windows, macOS, Linux, Android, iPhone and iPad. There is nothing to install — the conversion happens locally.

Are my MTS files uploaded to a server?

No. Files never leave your device. The entire MTS → FLV conversion runs locally in your browser, so your data stays private.

Can I convert multiple MTS files at once?

Yes — batch conversion is supported. Add as many MTS files as you like and convert them to FLV in one pass, then download the results together.

What is the maximum file size?

There is no fixed server-side limit because the conversion happens in your browser. Practical limits depend on the available memory and CPU of your device.

Will converting MTS to FLV reduce the quality?

Because both formats use lossy compression, the FLV output will not bring back any quality that has already been lost in your MTS file. Avoid repeated re-encoding to keep the best quality.

Does FLV support transparency?

No — FLV has no alpha channel. Transparent areas of your MTS file will be filled with a solid background colour in the converted file.

How will the file size change after converting MTS to FLV?

Both formats use comparable compression, so the FLV output will be similar in size to your MTS file — typically within 10–20% of each other.

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FREE

100% Free

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SIGNUP

No Signup Required

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PRIVACY

Private & Secure

Your files never leave your device. All processing is completed locally for maximum privacy.

BATCH

Batch Conversion

Convert multiple files simultaneously to save time. Fast and efficient multi-file queue.

LOCAL

Runs in Browser

Utilizes advanced client-side WebAssembly technology to process files directly inside your tab.

FORMATS

200+ Formats

Supports a wide variety of formats including images, documents, audio, video, and more.

USER REVIEWS

Convert MTS to FLV Quality Rating

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