ORF to WebM Converter

Convert ORF to WebM Online

This converter develops an Olympus .orf raw into a finished frame, holds that single still on screen for a duration you choose, and wraps it in a WebM video container. There is no motion and no audio track — just your photograph shown as a steady image for as long as you set. It is the quick route to a slate, a title card, a placeholder clip, or a still you can drop straight onto a web-video timeline without hunting for an encoder. If all you want is a picture to look at or share, ORF to JPG is the right tool and this one is overkill.

How to Convert ORF to WebM

1. Upload Your ORF File: Drag and drop your Olympus .orf onto the page or click "+ Add Files" to browse. Queue several frames if you want, then choose a Merge strategy: "Merge images" builds one clip from all of them in order, "Video per image" gives each photo its own file.
2. Set the Image Duration: Under "Duration", pick how long the still is held — from a single frame at 60, 30, 24, 10, 5, 3.33 or 2 fps up to 10 seconds per frame. The selected entry is 5 seconds.
3. Pick Codec, Quality and Background: Leave "Video Codec" on VP9 (see the codec table below before switching), choose a Quality Preset — "Very High (Recommended)" is selected — or switch to Constant Quality and set the CRF slider yourself, and set a Background Color, which is White here, to fill any letterbox bars.
4. Convert and Download: Click Convert and save the .webm. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours. No sign-up, no watermark.

What the Encoder Actually Does to a Still Photo

A few behaviours are fixed on this path and worth knowing before you tune anything:

• The frame is normalised first. Your raw is developed and re-encoded to a clean PNG before it ever reaches the video encoder, and that intermediate is clamped to 4096 pixels on its longest edge. A 20-megapixel Micro Four Thirds frame (5184 × 3888) therefore enters the encoder at 4096 × 3072. Set an explicit resolution under "Video resolution" if you want a specific output size rather than that ceiling.
• The timeline runs at 1 frame per second and B-frames are off. Your chosen duration is realised by holding one encoded picture, not by generating thirty identical frames a second, which is why a five-second still weighs so little.
• There is no audio. The Audio Codec controls are hidden on image-source pages because there is no sound to carry. The output is a silent video track.
• Bitrate and file-size modes are unavailable. Only Quality Preset, Constant Quality and Constraint Quality render here — a still has no source bitrate for a target-size calculation to work from, so those modes are hidden rather than shown and ignored.
• Transparent areas and letterbox bars get filled with the Background Color, White by default. A raw photo has no alpha, so this matters only when your chosen output resolution has a different aspect ratio from the frame.

Choosing a Codec

ORF and WebM at a Glance

Frequently Asked Questions

Does the WebM clip move or have any sound?

No. One ORF becomes one still image held for the duration you set, with no pan, no zoom, no fade and no audio track. If you upload several photos and choose "Merge images", they play one after another as a silent slideshow at the duration you picked per image; choose "Video per image" and each raw becomes its own single-image clip.

Should I leave the codec on VP9 or switch to VP8?

Leave it on VP9 unless you have a specific reason not to. VP9 accepts both the Quality Preset and the CRF slider, so you can actually steer the result. VP8 accepts neither on a still image — it has no constant-quality mode in this pipeline, and the preset has no source bitrate to scale from, so the encoder silently falls back to its own built-in defaults and every preset gives you the same file. AV1 is the other genuinely controllable option and produces the smallest files, at the cost of a slower encode.

Why is my photo not full resolution in the video?

Because the frame is normalised and clamped to 4096 pixels on its long edge before encoding, which keeps the image demuxer stable. A 5184 × 3888 raw arrives at the encoder as 4096 × 3072. If you need a specific output size, set it explicitly under "Video resolution" — "Keep original" means the normalised frame, not the camera's native pixel count.

Why are there white bars around my picture?

The frame's aspect ratio does not match the output resolution you selected. Rather than stretch or crop the photograph, the encoder pads the leftover space with the Background Color, which is White here. Pick Black or another colour from that dropdown, or choose an output resolution whose aspect ratio matches your camera's — Micro Four Thirds frames are 4:3, so a 16:9 preset will always pad.

Does converting to WebM cost me the raw file's editing latitude?

Yes, completely. An ORF is an undeveloped negative: white balance, exposure and highlight recovery are all still adjustable while it stays raw. Encoding to WebM develops it once, bakes that interpretation into fixed pixels, and then compresses those pixels with a lossy video codec. Keep the .orf as your master. If you want a lossless still you can keep editing, ORF to PNG is the right target.

How large will a five-second still WebM be?

Far smaller than you would expect from a video file, because there is almost nothing to encode after the first picture: at 1 frame per second with B-frames disabled, a held still compresses into a handful of near-empty frames. Raising the duration barely moves the file size; raising the resolution or lowering the CRF number moves it a lot. If you need a hard ceiling, use Constraint Quality and set a maximum bitrate.

Where does a WebM made from a photo actually play?

WebM plays natively in Chrome, Firefox and Edge, and per caniuse it is fully supported from Safari 16 on macOS and Safari 17.4 on iOS — roughly 96% of global browser traffic. Safari was years behind the others here, and some older smart TVs, set-top boxes and non-linear editors still do not accept WebM at all. If the file has to open absolutely anywhere — a client's editing timeline, a PowerPoint deck, an older phone — ORF to MP4 is the safer target.

Can I make a slideshow from several Olympus raws in one file?

Yes. Upload every .orf you want, keep the Merge strategy on "Merge images", and set the Duration to how long each photo should stay on screen. They are concatenated in upload order into one silent WebM. Choose "Video per image" instead when you want one clip per photo rather than a single sequence.

How are my raw files handled after upload?

They are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — never shared, never made public. There is no sign-up and no watermark. Olympus raws routinely run tens of megabytes each, so on a large batch the practical limit is upload size and connection speed rather than the encode itself.