Convert FLV to WEBM
FLV is great for old web video archives, but WEBM is the better choice for web video, HTML5 players and screen recordings. Convert FLV to WEBM in seconds, right in your browser.
- No upload — 100% private
- Fast, lossless when possible
- Free & unlimited
- Works on iPhone & Android
Keep this tab open — the conversion runs on your device, nothing is uploaded.
Add more files above to keep converting.
How to convert FLV to WEBM
- 1
Tap Choose files and select one or more FLV files (or drag them in).
- 2
Check that WEBM is selected. Use Advanced options for resolution, size or trimming.
- 3
Press Convert. Everything happens on your device — no upload, no waiting in a queue.
- 4
Your WEBM downloads automatically. Converting several files? Grab them all as a ZIP.
FLV vs WEBM
Both formats are lossy, so the video is re-encoded once. Pick High quality to keep it as close to the original as possible, or Small for the smallest file.
| FLV | WEBM | |
|---|---|---|
| Full name | Flash Video | WebM Video |
| Type | Video | Video |
| Compression | Lossy | Lossy |
| Developed by | Adobe | |
| Introduced | 2002 | 2010 |
| Plays on iPhone | ✕ No | ◐ Partly / with an app |
| Plays on Android | ◐ Partly / with an app | ✓ Yes |
| Plays on Windows | ◐ Partly / with an app | ✓ Yes |
| Plays on Mac | ✕ No | ◐ Partly / with an app |
About FLV and WEBM
FLV: FLV is the Flash Video format that powered early YouTube. Flash is gone, so FLV files usually need converting to play today.
WEBM: WebM is Google's open video format using VP8/VP9 and Opus. It is built for the web and is what screen recorders and browsers produce.
Frequently asked questions
How do I convert FLV to WEBM on my phone?
Will converting FLV to WEBM reduce quality?
Is this FLV to WEBM converter free?
Are my files uploaded to a server?
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