How to convert FLV to WEBM
To convert FLV to WEBM, upload your FLV file, choose WEBM as the output format and press Convert. The finished WEBM file is ready to save to your phone or computer in seconds, free, with no watermark and no sign-up. Your file is deleted from our server about 30 minutes after the conversion.
This free online converter turns FLV videos into WEBM files in your browser, with no software to install and no watermark. When the video and audio inside your FLV file can be placed in WEBM as they are, the streams are copied without re-encoding, which is faster and keeps the original quality. Otherwise the video is re-encoded as VP9 video with Opus audio.
What you get with FLV to WEBM
- Designed for the web and royalty-free
- Plays natively in Chrome, Firefox, Edge and Android
- Efficient VP9 compression
- Plays on: Chrome, Firefox, Edge, Opera, Android and VLC; partial on Safari and iOS
What to expect from this conversion
- Expect a file of similar size to the FLV original.
- WebM uses VP9, which compresses very well but takes longer to encode than H.264, so large videos need patience.
- Flash is discontinued, and FLV is rarely supported any more, so converting to a modern format keeps the video playable.
- FLV is a legacy format, so moving to WEBM makes the video easier to play, edit and share on current devices.
- The first audio track is kept. Subtitle tracks, extra audio tracks and chapters are not included in the converted file.
FLV vs WEBM
| Property | FLV | WEBM |
|---|---|---|
| Full name | Flash Video | WebM |
| Released | 2002, Macromedia / Adobe | 2010, Google |
| Generation | Legacy | Modern |
| Typical file size | Small | Small |
| Plays on | VLC, MPC-HC, ffplay and legacy RTMP tools; not supported by modern browsers | Chrome, Firefox, Edge, Opera, Android and VLC; partial on Safari and iOS |
| Best for | older streaming servers and RTMP workflows; archival conversions | embedding video on your own website; short looping clips and web animations |
Steps to convert FLV to WEBM
- Drop your FLV video file onto the converter, or click to choose it.
- Check that WEBM is selected as the target and adjust the options if you want.
- Press Convert, then download your new WEBM file when it finishes.
Tips for the best result
- Leave Fast mode on to keep the original quality whenever the streams can be copied.
- Pick a lower resolution if the file is for a phone or messaging app.
- Use Mute if you only need the picture.
Frequently asked questions
How do I convert FLV to WEBM?
Upload your FLV file, make sure WEBM is the selected target and press Convert. When the progress bar finishes, download the WEBM file. No account or software is needed.
Is the FLV to WEBM converter free?
Yes. It is free, with no watermark, no sign-up and no daily limit on how many files you convert. The site is supported by ads.
Will I lose quality when converting FLV to WEBM?
Not necessarily. If the video and audio streams already fit inside WEBM, they are copied without re-encoding, so quality stays identical. If the file has to be re-encoded, the High setting keeps almost all visible detail, while Small trades some detail for a smaller file.
Will the WEBM file be a similar size to my FLV?
Expect a file of similar size to the FLV original. Choosing a lower quality or resolution reduces the size further.
Which devices can play WEBM files?
WEBM files play on Chrome, Firefox, Edge, Opera, Android and VLC; partial on Safari and iOS.
How large a file can I upload?
You can upload videos up to 500 MB. Files are deleted from the server about 30 minutes after conversion.