Convert FLV to AVI

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

Conversions

Drop any file here or click to browse

All file types supported

About formats

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

AVI

AVI (Audio Video Interleave) is one of the oldest and most recognized multimedia container formats, introduced by Microsoft in November 1992 as part of its Video for Windows technology. Built on the Resource Interchange File Format (RIFF) structure, AVI interleaves audio and video data in alternating chunks, allowing synchronized playback without requiring sophisticated stream management. The format is codec-agnostic, meaning it can hold video compressed with virtually any codec, from early Cinepak and Indeo to modern DivX, Xvid, and H.264 streams. This flexibility contributed to widespread adoption across personal computers throughout the 1990s and 2000s. AVI supports multiple audio streams, enabling multilingual content within a single file. Despite being decades old, AVI remains one of the most universally recognized multimedia formats and is still widely supported by media players and editing tools across all major operating systems.

Developer: Microsoft
Initial release: November 10, 1992
Compression: Lossy
Color depth: up to 10-bit
Transparency: No
Animation: Yes

Best for

Archiving legacy video footage
Editing in older video software
Storing multiple audio tracks
Playback on classic media players
Cross-codec video container use

Pros

+Codec-agnostic — accepts nearly any video codec
+Supports multiple audio streams for multilingual content
+Universally recognized by media players and editors
+Simple RIFF chunk structure easy to parse

Cons

−No modern streaming or chapter metadata support
−Files tend to be large with inefficient codecs
−No built-in subtitle standard
−Lacks DRM and modern container features

How to convert FLV to AVI

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

FLV vs AVI

Property	FLV	AVI
Compression	Lossy	Lossy
Color depth	8-bit	up to 10-bit
Multi-track	Yes	Yes
DRM support	No	No
Open format	No	No

When to use FLV vs AVI

FLV

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

AVI

Archiving legacy video footage
Editing in older video software
Storing multiple audio tracks
Playback on classic media players
Cross-codec video container use

Use cases for FLV → AVI

Recovering legacy Flash video archives
Migrating old web video content
Playing retro web animations
Archiving early-2000s online video
Converting old streaming clips
Archiving legacy video footage
Editing in older video software
Storing multiple audio tracks
Playback on classic media players
Cross-codec video container use

Frequently Asked Questions

Is converting FLV to AVI free?

Yes. This FLV → AVI 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 FLV to AVI?

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 FLV files uploaded to a server?

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

Can I convert multiple FLV files at once?

Yes — batch conversion is supported. Add as many FLV files as you like and convert them to AVI 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 FLV to AVI reduce the quality?

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

Does AVI support transparency?

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

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

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

Related Conversions

Specific converters

FREE

100% Free

No hidden fees, no subscriptions, and no limits. Enjoy complete access to all features gratis.

SIGNUP

No Signup Required

Start converting immediately without creating an account or sharing email address.

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 FLV to AVI Quality Rating

4.8

25 reviews

How was your experience? You need to convert and download at least one file to provide feedback!