OGV to WEBM converter
Convert OGV to WEBM in seconds, free and unlimited. No upload, no sign-up, no watermark: your video never leaves your device.
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Quick answer: To convert OGV to WEBM, add the OGV file to the iHateFiles OGV to WEBM converter and press Convert. The conversion runs in your browser, so the file is never uploaded, and it is free with no sign-up, watermark or size limit. An open, royalty-free format that browsers play natively.
Should you convert OGV to WEBM?
Do this when something specifically needs WEBM. The picture is re-encoded, so it costs a little quality; if all you need is a file that plays everywhere, MP4 is usually the better target.
The picture is re-encoded
An OGV usually holds Theora video with Vorbis sound. This writes VP8 video with Vorbis sound into the WEBM. Both sides are compressed with loss, so this is a second generation: leave the quality at its default or higher, because the encoder is working from OGV artefacts rather than the original.
Where the WEBM will play
WEBM plays on every modern browser and Android, but not QuickTime or older iPhones.
OGV and WEBM side by side
| OGV | WEBM | |
|---|---|---|
| Inside the file | Theora video with Vorbis sound | VP8 video with Vorbis sound |
| Compression | Lossy | Lossy |
| Carries sound | Yes | Yes |
| Plays on | Firefox, Chrome and VLC, but not Safari or most phones | every modern browser and Android, but not QuickTime or older iPhones |
| Here | Read and write | Read and write |
What usually goes wrong
About the OGV. At the same file size Theora looks clearly worse than H.264, so re-encoding an old OGV will not recover detail that was never captured.
About the WEBM. A browser screen recording is usually a WEBM with a broken duration, so players show it as zero seconds or refuse to seek. Converting it to MP4 rewrites the header and fixes the seeking.
How to convert OGV to WEBM
- Add your OGV file. It is read from your disk and stays there.
- Check the settings. The output format is already set to WEBM.
- Press convert and the WEBM file is saved back to your device.
Questions
How do I convert OGV to WEBM?
Open this page, add your OGV file, and press convert. The file is decoded and re-encoded by your own browser and saved back to your device. Nothing is uploaded.
Is this OGV to WEBM converter free?
Yes, completely. There is no account, no sign-in, no watermark and no daily limit, because there is no server doing the work. Your own device does it.
Are my files uploaded anywhere?
No. There is no upload endpoint. The conversion runs inside this browser tab, so your file never leaves your device. You can open your browser's network panel and watch: nothing carrying your file is sent.
Is there a file size limit?
No fixed limit. Because the work happens on your machine there is no server quota. The only ceiling is your own device's memory, which for video means very large files may be slow.
Will converting to WEBM lose quality?
WEBM is a lossy format, so some detail is discarded. The quality control on this page decides how much. The default is set high enough that most people cannot see the difference.
Can I convert several OGV files at once?
Yes. Add as many as you like and they are converted one after another, then offered as a single ZIP.