Xvid to FLV Converter
Processing entirely on your device — large files may take a moment.
Rescuing FLV recordings means converting them to MP4 before Flash compatibility disappears completely. If your files are still in Xvid format, this page is the shortcut: Xvid is the open-source DivX competitor — the other MPEG-4 ASP encoder behind a decade of movie downloads.
This converter runs entirely in your browser using WebAssembly — your files never leave your device, nothing is uploaded, and there are no watermarks, sign-ups or queues. Drop in several files at once to convert them as a batch.
How Xvid compares to FLV
| Xvid | FLV | |
|---|---|---|
| Compatibility | ffmpeg, VLC, every player | Legacy players only |
| Best for | Legacy download migration | Early web video archives |
How to convert Xvid to FLV
- 1
Select your files
Drag & drop your Xvid files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to FLV". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted FLV file individually, or grab everything at once as a ZIP archive.
About the Xvid format
Xvid is the open-source implementation of the same MPEG-4 ASP profile DivX commercialized — after the original was open-sourced following a legal scuffle, Xvid became the encoder of choice for a decade of scene releases and personal rips.
Identical migration path as DivX: decode through ffmpeg, re-encode to H.264. The video quality at its usual bitrates survives the trip better than DivX's worst files, thanks to Xvid's tunable quantization.
+ Strengths
- ✓Open-source and configurable
- ✓Enormous existing content corpus
- ✓Decodes via ffmpeg everywhere
! Limitations
- −Same ASP-era limitations as DivX
- −Packed bitstream quirks in some files
- −Development ended years ago
About the FLV format
FLV (Flash Video) was the video format of the early streaming web — YouTube's original delivery container from 2005 to ~2010, played by Adobe Flash Player. Later versions carried H.264/AAC, but the container lived and died with Flash, which reached end-of-life in 2020.
Modern browsers cannot play FLV at all, and only niche players (VLC) bother. If you have an FLV archive, converting to MP4 recovers the same H.264 video into a container every device accepts.
+ Strengths
- ✓Only relevant for early-web video archives
! Limitations
- −Dead ecosystem — Flash ended in 2020
- −No browser support at all
Why convert Xvid to FLV?
Converting makes sense where the strengths of FLV meet what Xvid cannot give you. Only relevant for early-web video archives Meanwhile Same ASP-era limitations as DivX One pass through the converter above puts your file on the right side of that trade-off.
Frequently asked questions
Is this Xvid to FLV converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Is there a file size limit for Xvid to FLV?
The only limit is your device's memory, since nothing is uploaded. Files up to a few hundred megabytes work fine on a modern desktop browser; very large files simply take a little longer.
Does converting Xvid to FLV re-encode my video?
Yes. The video is decoded and re-encoded with the settings chosen by the quality slider, which is what allows the format and size to change. For an archival copy, keep higher quality; for sharing, lower quality gives a much smaller file.
Why is video conversion slower than image conversion?
Every frame has to be decoded and re-encoded. This site runs that work on your own CPU via WebAssembly — nothing is uploaded, but a multi-minute video reasonably takes a few minutes. Images, by comparison, are single-frame jobs.