Click the "Select File" button above, and choose your FLV file.
You'll see a preview.
Click the "Convert file to..." button and download the AVI file.
High Quality Conversion
Our advanced conversion technology delivers accurate FLV conversions while preserving quality and integrity of your videos.
Secure and Private
Your data is protected by strict privacy policies and access controls. Uploaded FLV videos and converted AVIs are deleted immediately after conversion.
Easy to Use
Upload your FLV file to preview it in your browser and download it as a AVI. No registration, watermarks, or software installation required.
FLV to AVI Conversion Explained
Converting .FLV to .AVI changes a legacy web video container into a legacy desktop video container. Users perform this conversion to rescue old Flash videos and make them playable on older Windows machines, standalone DVD players, or editable in legacy software. You gain offline compatibility with older systems, but you lose the web-streaming optimization of .FLV.
The main trade-off is file size and quality. If the conversion requires re-encoding the video stream to ensure compatibility, you will lose visual quality and increase the file size. For modern playback on smartphones or current web browsers, converting .FLV to .AVI is a bad idea; converting to .MP4 is the correct choice.
Typical Tasks and Users
Digital Archivists: Rescuing early 2000s web videos from defunct Flash-based websites for offline storage.
Retro Hardware Enthusiasts: Playing downloaded internet videos on early 2000s standalone DivX DVD players or older Windows PCs.
Video Editors: Importing old web footage into legacy Non-Linear Editors (NLEs) like older versions of Adobe Premiere Pro or VirtualDub that do not natively support .FLV.
Software & Tool Support
FFmpeg: The standard open-source command-line tool for converting .FLV to .AVI. It handles demuxing and transcoding efficiently.
VLC media player: A free, universal media player that can play both formats and perform basic file conversions.
VirtualDub: A classic Windows tool for editing .AVI files. It requires third-party plugins to open .FLV files directly.
Shutter Encoder: A modern, free GUI for FFmpeg that handles legacy format conversions easily.
Pros and Cons of the Conversion
Pro: Legacy Compatibility:.AVI is natively supported by older Windows operating systems and legacy hardware media players.
Pro: Editability: Older video editing software accepts .AVI files much easier than .FLV, which was designed strictly as a delivery format.
Con: Quality Loss: If the video codec inside the .FLV (like H.264) is transcoded to an older codec (like Xvid) for .AVI, generation loss occurs.
Con: File Size:.AVI files are generally larger than .FLV files, especially if uncompressed or using older, less efficient codecs.
Con: Metadata Loss: Flash-specific metadata, such as cue points and interactive ActionScript triggers, is permanently lost.
Conversion Difficulties & Why Convert.Guru
The main technical difficulty when you convert .FLV to .AVI is codec compatibility. .FLV files often contain H.264 video and AAC audio. While the .AVI container can technically hold these streams, doing so often breaks playback in the legacy software that users are trying to target.
A proper conversion pipeline must demux the .FLV, decode the streams, and re-encode (transcode) them into AVI-friendly codecs like Xvid for video and MP3 for audio, before remuxing them into the .AVI container. This re-encoding step risks audio desync and visual artifacting. Convert.Guru handles this pipeline automatically. It detects the source codecs and applies the correct transcoding settings to ensure the resulting .AVI file is highly compatible, without requiring you to manually configure bitrates or codec libraries.
You should rarely choose .FLV today, as the Flash Player is obsolete. Keep files in .FLV only if you are maintaining a strict digital archive of early web history and want to avoid generation loss.
Choose .AVI only if you specifically need to play the video on a legacy Windows machine, an old standalone DivX player, or edit it in software from the 2000s. For almost all modern use cases, you should avoid this conversion entirely. Instead, convert your .FLV files to .MP4. The .MP4 format offers universal playback on modern smartphones, smart TVs, and web browsers, while maintaining better quality at smaller file sizes.
Conclusion
Converting .FLV to .AVI makes sense only when rescuing old web videos for use in legacy Windows environments or older editing software. The biggest limitation to watch for is the inevitable quality loss and file size increase if the video must be re-encoded to older codecs like Xvid to ensure .AVI compatibility. Convert.Guru is a reliable choice for this exact conversion because it manages the complex codec transcoding automatically, delivering a compatible .AVI file without requiring deep technical knowledge of legacy video standards.
FAQ
The converter also works in reverse, allowing you to convert your AVI file into FLV file type.
Convert.Guru also easily converts FLV videos (Multimedia Container) to various formats - free and online. No VLC or extra software needed.
Convert the FLV locally and export to AVI using VLC software or a reliable desktop converter — no internet needed. The easiest way is to open the FLV file in the software on your computer and then save it as a AVI file in the File menu under Save as...
About the FLV to AVI Converter
Convert.Guru makes it fast and easy to convert Flash videos to AVI online. The FLV to AVI converter runs entirely in your browser, so there’s no software to install and no account required. Powered by one of the industry’s largest and most trusted file format databases—maintained for more than 25 years—our technology reliably identifies FLV videos even when they are damaged or incorrectly named. Uploaded files are automatically deleted after conversion to protect your privacy.