Convert FLV to WEBM
Convert FLV files to WEBM locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
Upload FilesPlatform Statistics
How to convert FLV to WEBM
- Drop your .flv files above, or click Upload Files. You can add many files at once.
- WEBM is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. FFmpeg runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .webm files as soon as each one finishes.
What to know about FLV to WEBM conversion
- The video is re-encoded to VP8 video and Opus audio so it plays wherever WEBM is supported, and odd frame sizes are adjusted automatically.
- You can change the resolution, frame rate, playback speed and quality (CRF) before converting.
FLV vs WEBM
| Feature | FLV (Flash Video) | WEBM (WebM Video Container) |
|---|---|---|
| Codecs used by PureConverter | H.264 video and AAC audio | VP8 video and Opus audio |
| Best for | legacy Flash-based players and old streaming setups | web video with open, royalty-free codecs |
| Opens in | VLC, mpv and most media players | all modern browsers and VLC |
FLV (Flash Video): A legacy streaming video container popularised by Adobe Flash Player.
WEBM (WebM Video Container): An open, royalty-free media file format designed for sharing video content directly on HTML5 web pages.
Conversion options
- Resolution: original, 1080p, 720p, 480p or 360p
- Frame rate and playback speed (0.5× to 2×)
- Quality presets or a custom CRF value, and lossless mode
- Audio bitrate, sample rate and channels
Frequently asked questions
Is it safe to convert FLV to WEBM here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several FLV files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Need the opposite? Convert WEBM to FLV.
Convert FLV to other formats
- FLV to MP4
- FLV to MP3
- FLV to WEBP
- FLV to GIF
- FLV to WAV
- FLV to MOV
- FLV to M4A
- FLV to FLAC
- FLV to MKV
- FLV to AAC
- FLV to OGG
- FLV to OPUS
Convert other formats to WEBM
- MP4 to WEBM
- MOV to WEBM
- MKV to WEBM
- AVI to WEBM
- WMV to WEBM
- M4V to WEBM
- MPEG to WEBM
- TS to WEBM
- 3GP to WEBM
- OGV to WEBM
See every FLV converter and WEBM converter, or browse the full converter directory.