Convert FLV to AVI Online Free
FLV is a legacy Flash video format that is now largely obsolete. AVI is a legacy Microsoft video container still found in older files and cameras. FileConverter turns your FLV into AVI online in seconds - free, privacy-first, and with no software to install or account to create.
Convert FLV to AVI
AVI is already selected. Add your FLV file to start.
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Videos
Audio
Add a FLV file above to start the conversion.
FLV to AVI shifts video from one legacy world (Flash streaming) into another (desktop Windows) — typically to satisfy an old editing suite or archival tool that ingests AVI but never supported Flash formats.
What changes when you convert FLV to AVI
This re-encodes your footage from the FLV container into AVI, which can change the underlying codec and file size. At sensible settings quality is well preserved, but converting from a higher-quality FLV source always produces a better AVI result. Trim long clips first if you only need part of the footage.
About the FLV format
FLV was the standard for streaming Flash video in the 2000s. With Flash discontinued, converting FLV to MP4 is usually necessary to play these files on modern devices and browsers. In everyday use, FLV is chosen for recovering old Flash-era recordings and archives from legacy streaming sites. It opens in VLC and legacy players only.
About the AVI format
AVI is an older container that can hold high-quality, lightly compressed video, which is why files are often large. It plays on desktop players but is a poor choice for modern web and mobile delivery. In everyday use, AVI is chosen for older recordings and legacy archives and desktop playback of vintage footage. It opens in VLC, Windows Media Player, and most desktop players.
FLV vs AVI
FLV is best known for small files for early web streaming, while AVI stands out for widely readable on Windows desktop players. Choosing between them comes down to where the file needs to go next.
Common use cases
People convert FLV to AVI for jobs such as older recordings and legacy archives and desktop playback of vintage footage. It is especially common when a FLV file arrives from one system but needs to work in another that standardises on AVI.
When to convert FLV to AVI
Reach for FLV to AVI when your destination expects AVI — for example older recordings and legacy archives and desktop playback of vintage footage. It is the right move when you receive a FLV file but the app, website, or person you are working with cannot use it. Bear in mind that large files and dated compression, so keep your original FLV if you might need it again.
How to convert FLV to AVI
- Upload your FLV file to the converter at the top of this page - AVI is already selected as the output.
- Check the size limit shown on this page, then drag and drop or browse for your file.
- Confirm AVI is still the target format, or pick a different one from the grid.
- Start the conversion and download your AVI file the moment it is ready.
Quality tips
Keep one master FLV archived and convert copies. If the AVI file is for web playback, test it in the target browser or player; if you only need the sound, use our Extract Audio tool instead of a full video conversion.
Platform compatibility
The FLV to AVI converter runs on Windows, macOS, Linux, Android, and iOS - anywhere with a modern browser, with no plugins or permissions required. Once exported, AVI opens in VLC, Windows Media Player, and most desktop players.
File size limits
Video/audio up to 2GB
Troubleshooting
- If the file exceeds the limit shown below, compress images, trim video, or split archives before retrying.
- If conversion fails, confirm the extension matches the real format — renaming a file alone does not change its contents.
- Very large videos process faster if you trim them first with our Video Trim tool.
- If quality looks soft, try a less aggressive setting when the converter offers options.
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