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Need help?MOS to MPG Converter
MOS is Leaf's camera RAW format — a single, high-bit-depth still captured by a Leaf medium-format digital back straight off the sensor. MPG is the legacy MPEG program-stream video container. This converter renders one MOS photo into a short, silent MPG clip that holds the still on screen for a set duration. It is a genuinely niche conversion: if you only want a viewable picture, convert the MOS to a still image instead — MPG makes sense only when a player, kiosk, or DVD-authoring workflow specifically needs a video file.
MOS Format at a Glance
| Property | Value |
|---|---|
| Full name | Leaf camera RAW (Leaf Mosaic / digital-back RAW) |
| Introduced | Early 2000s, on Leaf Aptus and later Credo digital backs |
| Lineage | Leaf → Leaf-Mamiya → Phase One (Leaf Imaging) |
| Container | TIFF-based binary structure (proprietary) |
| Holds | A single still photo — unprocessed sensor data, not video |
| Bit depth | Typically 16 bits per channel of linear sensor data |
| Editor support | Capture One, Adobe Camera Raw / Lightroom, Adobe DNG Converter |
| Best for | Editing and archiving medium-format Leaf captures before exporting a finished image |
MPG Format at a Glance
| Property | Value |
|---|---|
| Full name | MPEG program stream (the .mpg container) |
| Standard | ISO/IEC 11172 (MPEG-1, 1993) and ISO/IEC 13818 (MPEG-2) |
| Video codec here | MPEG-2 by default on this converter |
| Audio | MPEG-1 Audio Layer II (MP2) when present — but a photo source produces a silent clip |
| Bit depth | 8 bits per channel |
| Best for | DVD-era authoring, set-top boxes, and legacy players that predate H.264 |
| Modern alternative | H.264 in MP4 — smaller, sharper, far more compatible |
How to Convert MOS to MPG
- Upload Your MOS File: Drag and drop your
.mosphoto onto the page or click "+ Add Files" to browse. You can queue several Leaf RAW files at once. - Set the Duration: Under "Duration", choose how long the still is held on screen — the dropdown defaults to "5 seconds per frame" and ranges from a fraction of a second up to 10 seconds. This sets the length of the resulting clip.
- Set Resolution, Quality Preset, and Background Color: Leave "Video resolution" on "Keep original" or pick a Fixed or Preset resolution; keep the "Quality Preset" on "Very High (Recommended)"; and set a "Background Color" (White by default) to fill any letterbox bars left when the photo's aspect ratio doesn't match the frame.
- Convert and Download: Click "Convert" and download your MPG. No sign-up, no watermark.
Frequently Asked Questions
What does converting a MOS photo to MPG actually produce?
A short, silent video that shows your single MOS photo as a still frame for the duration you set. There is no motion and no sound — the converter demosaics and tone-maps the Leaf RAW into one ordinary video frame and holds it. If your goal is a picture you can view, print, or post, this is the wrong format; convert to MOS to JPG or MOS to TIFF instead. Choose MPG only when something downstream genuinely needs a .mpg file.
Why is the MPG clip silent?
A MOS holds a photo, and a photo carries no sound, so this image-to-video conversion writes no audio track rather than padding the clip with silence. The MPG is silent in every case. If you need a soundtrack, open the clip in a video editor afterward and add music or narration.
Does the MPG keep my MOS photo's full resolution and bit depth?
No. A MOS off a Leaf medium-format back stores roughly 16 bits per channel of linear sensor data with wide editing latitude and very high pixel counts. To make a video frame, that data is demosaiced and tone-mapped down to an ordinary 8-bit MPEG frame, and the large image is scaled to fit the chosen resolution. The video is a rendered, baked-in interpretation — it does not preserve the highlight recovery, color depth, or detail of the original RAW. Keep the .mos as your master.
Should I use MPG or MP4 for a MOS-derived clip?
MP4 (H.264) for almost everything. The .mpg output here carries MPEG-2, a 1990s codec built for DVDs and set-top boxes — larger files, softer image, and patchy support on modern phones and browsers. Choose MOS to MP4 for sharing, editing, or web use, and reserve MPG for a player or DVD-authoring tool that specifically requires that container.
What if I just want to view or edit the MOS, not make a video?
Then skip the video wrapper entirely. Convert to MOS to JPG for a small, universally openable image, or to MOS to TIFF for a high-fidelity, print-ready master that keeps more detail. MOS itself opens in Capture One and recent Lightroom and Camera Raw releases, and Adobe's free DNG Converter can read it as well — the video route is only for the rare case where you genuinely need an .mpg file.
Why is the converted clip larger than the original photo, and what can I do about it?
MPEG-2 is an older, low-efficiency codec, and holding a still for several seconds at video bitrates can produce a file bigger than the source photo. In our testing, a single MOS held for 5 seconds and encoded as MPG produced a short standard-definition clip noticeably heavier than the same image saved as a high-quality JPG. Shorten the "Duration", or if the file needs to be smaller still, run the result through the video compressor.
Can I add a pan, zoom, or fade to the still?
No. The converter holds one static frame on screen for the duration you set — there is no Ken Burns pan, zoom, or crossfade, because a single photo has no motion to animate. Every second of the resulting clip shows the identical frame.
If you want movement or a fade in and out, export the picture first — for example as a MOS to JPG still — and add the effect in a video editor before encoding. This tool's role is simply to wrap the frame in an MPG of a chosen length, not to animate it.
How are my files handled, and how long are they kept?
Your MOS is uploaded over an encrypted connection, rendered on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, and your photos are never shared or made public.