PEF to WebM Converter

Convert PEF to WebM Online

This tool renders a Pentax PEF raw photo into a finished image and holds it on screen as one motionless frame for a duration you choose, then wraps it in a WebM video clip. There is no motion and no audio — it is a single still shown steadily, not a slideshow or an animation. The honest reasons to do this are narrow: a photo slate or title card to drop onto a web-video timeline, or a still that a web player or upload form will only accept as .webm. If you just want a picture to view, edit, or share, render PEF to JPG instead and keep the original PEF as your master.

How to Convert PEF to WebM

1. Upload Your PEF File: Drag and drop your Pentax .pef files onto the page or click "+ Add Files" to browse. You can queue several at once.
2. Choose Merge or Per-Image: Pick "Merge images" to play several stills in sequence as one WebM, or "Video per image" to make a separate one-frame clip from each PEF.
3. Set the Image Duration and Background Color: Under "Duration", choose how long the still holds — from a fraction of a second (1/60s, 1/30s, 1/24s, matching common frame rates) up to 10 seconds, with 5 seconds the default. Set a "Background Color" (black by default) to fill any letterbox bars when the photo's shape doesn't match the output.
4. Convert and Download: Keep the "Quality Preset" on "Very High (Recommended)" and click "Convert". No sign-up, no watermark.

PEF vs WebM: What You're Converting Between

Frequently Asked Questions

Does the WebM clip have any motion or sound?

No. The conversion takes one PEF photo and displays it as a static image for the duration you set. There is no panning, zooming, or animation, and the output carries no audio track — it is a silent, single-frame still rendered into a WebM video. If you have several photos and want them to play one after another, choose "Merge images" to combine them into one clip; otherwise each file becomes its own one-frame video.

Does rendering a PEF to WebM lose my raw editing latitude?

Yes. A PEF is an unprocessed negative — white balance, exposure, and highlight recovery are all still adjustable while the file stays raw. Converting to WebM renders that raw first, baking the camera's current interpretation into flat finished pixels, so you can no longer rebalance color or pull back blown highlights afterward. Always keep the original PEF as your master and treat the WebM as a disposable export.

Which WebM codec does the output use — VP8 or VP9?

VP9 by default. WebM is an open container that carries VP8 or VP9 video, and you can switch the "Video Codec" under Advanced Options. VP9 was designed to roughly halve VP8's bitrate at the same quality, so it generally produces smaller files; VP8 has the broadest legacy playback. Both are royalty-free and, per caniuse, play natively in Chrome 25+, Firefox 28+, Edge 79+, Safari 16+, and Opera 16+.

Why does my photo have black bars in the WebM?

A PEF frame's aspect ratio may not match your chosen output resolution. Rather than stretch or crop the picture, the converter fills the leftover space with the "Background Color" you select — black by default. Pick white or another color under Advanced Options if black bars don't suit the project.

Should I convert PEF straight to WebM, or extract a photo first?

If you just want a usable still to view, edit, or share, render PEF to JPG and keep the PEF as your archival master. Go to WebM only when you specifically need a video clip — a slate, a title card, or a still for a web-video timeline. For a video file that plays on more devices and editors, use PEF to MP4 instead. In our testing, a 5-second WebM from a single Pentax raw frame at the "Very High" preset came out only a few hundred kilobytes, because a motionless image compresses heavily under VP9. Your file is uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public.