Convert WebP to MP4
Your files are processed on your device. We never upload them.
Video is read and written with Mediabunny, under the Mozilla Public License.
How to convert WebP to MP4
- 01A ▸Choose your animated WebP files, or drop them on the page.
- 02A ▸Pick how many times the animation plays in the video.
- 03A ▸Select Convert to MP4, then download each video.
About WebP to MP4
Where WebP files come from
Animated WebP is what WhatsApp and Telegram use for stickers and what many sites serve instead of GIFs. Most video editors, social apps, and older phones can't open it, while MP4 plays everywhere.
What changes
- Each frame is drawn as the animation shows it (earlier frames show through where the file says) and encoded as H.264 video.
- Each frame keeps its own timing. The video plays the animation once, or 3 or 5 times if you choose.
- Transparent parts are laid on white, and an odd width or height gains one pixel, as video encoders need even sizes.
Measured
A five-second, 480 × 270 animated WebP of 50 frames made from our 1080p test sample (a synthetic test pattern), converted in Chrome on a laptop. Phone timings are still to be measured.
| Animated WebP, 50 frames | 402 KB |
|---|---|
| MP4 (H.264) | 92 KB, in 0.3 seconds |
| Time on phones | still to be measured |
In your browser
Each frame is opened by the browser's own WebP decoder, or by libwebp where a browser can't open one, so every browser reads animated WebP here without the newer ImageDecoder feature. The MP4 is encoded with the browser's H.264 encoder (WebCodecs), in Chrome, Edge, Firefox, and Safari 26 or later; browsers without it show a notice instead.
Limits
- Only animated WebP files become videos; a still WebP is a picture.
- Very large animations are scaled down to what the browser's encoder accepts.
Other options
- WebP to GIF: to keep it an animation that loops on its own.
- GIF to MP4: the same for GIFs.
- WebP to PNG: for a still WebP picture.
Questions
Are my files uploaded?
No. Your files are processed on your device. We never upload them.
Where do animated WebP files come from?
WhatsApp and Telegram stickers, Google Images and GIF sites (which serve WebP to save space), and screen recorders. Many apps and editors can't open them, but every one opens MP4.
What about a still WebP?
A still picture isn't a video, so the page says so. Use WebP to JPG or WebP to PNG instead.
What happens to transparent stickers?
Video can't be see-through, so transparent parts are laid on white, and the result says so.
Will the MP4 loop?
A video plays once unless the player loops it. Pick 3 or 5 times to repeat the animation inside the video.