Converting AVI to FLV repackages DivX-era desktop video into Flash Video for legacy RTMP servers and e-learning tools that accept nothing newer. Flash itself died in 2020, so this direction exists purely to keep dated infrastructure fed. Everything inside the AVI is re-encoded — typically to H.264 or VP6 — on the way in.
Convert AVI to FLV – Free Online AVI to FLV Converter
Why convert AVI to FLV?
- Supply clips to an old Adobe Media Server installation whose RTMP ingest still expects FLV files.
- Update video inside legacy SCORM courses built with late-2000s Camtasia or Adobe Captivate, which packaged lessons as FLV.
- Match archival requirements of an organization that stored its 2005-2015 web video library entirely in Flash Video.
Tip: Check whether the receiving system also accepts MP4 before converting — most late-Flash tooling does, and MP4 keeps the file useful after the legacy pipeline is finally retired.
What is the difference between AVI and FLV?
| AVI | FLV | |
|---|---|---|
| Era and purpose | 1990s desktop playback container | 2000s web streaming for the Flash player |
| Delivery model | Local files, no streaming design | Progressive download and RTMP streaming |
| Player support today | Most desktop players still open it | Only legacy Flash-based infrastructure |
| Seeking and metadata | Basic index at the end of the file | Keyframe metadata designed for web scrubbing |
| Best for | Archived DivX/Xvid-era footage | Systems that accept nothing newer than FLV |
Does converting AVI to FLV lose quality?
Nothing about this conversion improves the picture: the AVI's DivX/Xvid-era video is decoded and re-encoded for the FLV, adding one more lossy generation to footage that is usually already heavily compressed. Expect the result to look at best equal to the source, and budget expectations accordingly for low-bitrate 2000s material.
File size typically stays in the same range or shrinks slightly, since FLV targets were designed for that era's limited bandwidth. If the legacy system you're feeding has a bitrate or resolution ceiling, downscale the source before converting rather than hoping the old pipeline copes.
Treat the FLV as a delivery copy only and keep the AVI as your archival master — when the Flash-era system is finally retired, you'll want to convert the original again, not the FLV.
What can go wrong converting AVI to FLV?
- The legacy player shows the clip but with no sound — Flash-era players expect MP3 or AAC audio, and exotic tracks in old AVIs (AC3, DTS) can fall outside what they decode. Convert from a copy whose audio is standard stereo, or check the receiving system's audio requirements.
- Playback stutters when scrubbing in the old web player — Old Flash players seek only to keyframes, and long stretches between them make scrubbing jumpy. This is a property of the format and player rather than a conversion error — shorter clips scrub noticeably better.
- The system I'm feeding rejects the FLV outright — Some very early Flash servers accept only Sorenson Spark or VP6 video. Confirm which codec generation the system supports — and whether it quietly accepts MP4, which most late-Flash tooling does.
How to convert AVI to FLV
- Upload your AVI file using the area above.
- FLV is preselected as the target format.
- Click Start and wait for the conversion to finish.
- Download your converted FLV file.