AVI to FLV Converter Online

Convert your AVI (.avi) file to FLV (.flv) in seconds straight from your browser. No installs. No watermarks. 100 % free.

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Why choose HappyScribe?

47+ Formats

Convert from AVI to FLV but also 47+ other formats.

100% Free

No signups, no fees, no hidden restrictions. Convert AVI to FLV directly in your browser for free.

Secure

We take your security seriously. All file transfers use 256-bit SSL encryption.

Online

No installs needed; convert AVI to FLV right from your browser, on any device, anytime.

How to convert AVI to FLV?

1. Upload your AVI file

Start by dragging and dropping your AVI file into the upload area, or click to browse your device and select your file in the list.

2. Choose FLV format

Next, pick FLV as the format you’d like to convert your video into. Alternatively, we support +47 formats that you can choose from. When you’re ready, hit the Convert button.

3. Download your converted FLV

Once the conversion is complete, you’ll get a download link right away. Just click to save the file to your device. It’s fast, easy, and doesn’t require any software installation.

What is a AVI file?

Audio Video Interleave (AVI) is Microsoft’s venerable multimedia container introduced with Video for Windows. It stores audio and video streams in interleaved RIFF chunks, allowing simple players to read sequentially from disk. While it supports multiple codecs, it lacks modern features like B‑frame timestamping and embedded subtitles. Released in 1992 to counter Apple’s QuickTime, AVI became ubiquitous on Windows 95 thanks to the Indeo and Cinepak codecs. The rise of DivX in 1999 rejuvenated AVI for internet sharing, but mismatched VBR audio led to sync headaches. Microsoft replaced it with ASF/WMV and eventually MP4, yet legacy camcorders and CCTV systems still output AVI.

What is a FLV file?

Flash Video (FLV) is a container that encapsulates Sorenson Spark, VP6, or H.264 video together with MP3/AAC audio and on‑screen data events for ActionScript. It became the backbone of early YouTube and news portals because the small header footprint yields quick progressive playback. Macromedia introduced FLV in 2002 with Flash Player 6, offering the first ubiquitous plug‑in‑based video experience on the Web. After Adobe’s acquisition, FLV evolved to support H.264 in 2007 but began losing ground once HTML5 <video> gained traction. By the end of 2020, Adobe disabled Flash, and most CDNs convert FLV archives to MP4 or HLS.

Free Online AVI to FLV Converter

Need to convert your audio file from AVI to FLV? It’s simple. Just upload your file, choose the output format, and click ‘Convert’. That’s it — no downloads, no complicated software, and no hidden costs. Our tool is designed to be fast, secure, and completely free, so you can turn your files into the format you need in seconds.

Whether you’re converting audio for sharing, editing, or playback on different devices, our converter ensures high-quality output every time. After your conversion, you’ll also have the option to transcribe video to text, making it easy to turn your FLV files into accurate, editable text in just a few clicks.

Frequently Asked Questions

How to open a AVI file?

Windows Media Player, VLC, and MPC‑HC open most AVI files. If the clip uses an obscure four‑character codec (FourCC), install the corresponding VFW decoder or remux to MKV with FFmpeg. Adobe Premiere Pro and DaVinci Resolve import AVI but may transcode on the timeline for GPU effects.

How to open a FLV file?

Desktop apps like VLC or MPC‑HC open FLV seamlessly. If you encounter a Spark‑encoded clip, convert using FFmpeg: `ffmpeg ‑i input.flv ‑c:v h264 output.mp4`. Web players no longer stream FLV, so upload sites recommend remuxing to MP4 or WebM.