DNG to 3GP Converter

Convert DNG to 3GP: What This Tutorial Covers

DNG is a still photograph — Adobe's Digital Negative, a raw sensor file — and 3GP is a mobile video container, so this is not a like-for-like swap. The converter turns your still into a short silent video clip that holds that single frame on screen. This walk-through covers the upload, how long to hold each frame, which codec and frame size a 3GP player will actually accept, and the two limits that surprise people: there is no audio, and there is no bitrate control on an image-to-video page.

How to Convert DNG to 3GP

1. Upload Your DNG File: Drag and drop your .dng onto the page, or click "+ Add Files" to browse. Queue several stills if you want, then use Merge strategy — "Merge images" (the default) builds one combined clip, "Video per image" writes a separate 3GP for each file.
2. Set Image Duration: Open the Duration dropdown to choose how long each still is held. It starts at 5 seconds per frame, and the list runs from a single 1/60s frame all the way up to 10 seconds.
3. Pick a Video Codec and Video resolution: H.264 is the default codec; H.263, MPEG-4, and Xvid are the alternatives for older handsets. Video resolution sits on "Keep original" — switch to Fixed Resolutions or Preset Resolutions to force a specific frame size, and set Background Color if that introduces letterbox bars.
4. Convert and Download: Click "Convert" and download the 3GP. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared or made public.

Walk-through: Duration, Resolution, and Background Color

Image Duration is the decision that matters most, because a 3GP built from one photo is simply that frame held on screen. A short hold makes a tiny file that flashes past; a long hold makes something you can actually look at. Pick by purpose:

• A quick clip for an old handset: 3 to 5 seconds is plenty and keeps the file small.
• A slideshow from several DNGs: upload them all, leave Merge strategy on "Merge images", and use 2 to 4 seconds each so the sequence moves.
• A freeze-frame placeholder: 1 second is enough; there is no reason to inflate the file.

Video resolution is the second lever, and there is a hard ceiling worth knowing about. Before encoding, each still is normalised to a clean PNG and clamped to 4,096 pixels on its longest edge — so a 6,000-pixel-wide raw file is downscaled even when you leave the mode on "Keep original". Since 3GP was designed for 3G-era phone screens, you will usually want to go much smaller than that anyway: pick a Preset or Fixed Resolution that matches the target device rather than shipping a 4K-ish frame in a mobile container.

Background Color only becomes visible when the still's aspect ratio does not match the video frame you asked for. In that case the encoder pads the difference and fills the bars with this color, which defaults to White; the dropdown offers Black and roughly two dozen other named colors. If you leave Video resolution on "Keep original", the frame matches the photo exactly, there are no bars, and the setting has no visible effect.

One thing you will not find on this page: bitrate and file-size modes. Image-to-video conversions expose Quality Preset (starting on "Very High (Recommended)"), Constant Quality, and Constraint Quality only — no Constant Bitrate, no Variable Bitrate, no target-size control. If the output is too large, shorten the duration or drop the resolution instead of hunting for a bitrate box.

DNG and 3GP Side by Side

Video Codec Choices for 3GP

Common Errors and How to Fix Them

• "The video has no sound" — Expected, and not fixable here. A DNG is a photograph with no audio track, so the encoder writes no audio stream at all and the Audio Codec control does not appear on this page. Add a soundtrack afterward in a video editor if you need one.
• "My raw looks flat or washed out" — A DNG's 12–14 bit latitude is baked down to 8-bit video, and none of the raw adjustments you would normally make in Lightroom or Camera Raw are applied. For a faithful picture, convert to DNG to JPG or DNG to TIFF instead.
• "The image looks soft or pixelated" — Either you chose a small resolution preset, or the source exceeded the 4,096-pixel normalisation ceiling and was downscaled. Choose a larger preset, and remember that 3GP is a small-screen format by design.
• "The 3GP won't play on my computer" — Most desktop players and every major browser lack 3GP support; MDN lists it as effectively Firefox-for-Android only. VLC and MPV open it, or convert to a modern container with DNG to MP4.
• "The output is bigger than I expected" — A long Image Duration multiplies the frame count. Shorten the duration, or step the resolution down. There is no bitrate control on this page to squeeze instead.
• "There are white bars around my photo" — You picked a resolution whose aspect ratio does not match the still, and the padding took the default Background Color. Change Background Color to Black, or return Video resolution to "Keep original".

When This Doesn't Work

If your DNG files came out of a raw-video workflow — Magic Lantern, CinemaDNG, or a drone that dumps a stack of numbered .dng frames — be aware that each upload here is treated as an independent still, not as sequential motion. Merging them produces a slideshow at the duration you chose, not the original footage at its original frame rate. For that, sequence the stack in a video editor or a dedicated raw-video tool. And if what you actually wanted was the picture on a phone or a website rather than a video of it, skip the conversion entirely: a still format from the DNG converter is smaller, sharper, and vastly better supported.

Frequently Asked Questions

Why does converting DNG to 3GP produce a video instead of a photo?

Because 3GP is a video container and has no way to store a still image on its own. The conversion therefore builds the shortest sensible video: your single frame, held for the duration you choose. If you wanted a viewable picture rather than a clip, convert the DNG to JPG, PNG, or TIFF instead — those are still-image targets and preserve far more of the raw file's detail.

Will the 3GP have any sound?

No. A DNG carries no audio, so the encoder writes a video-only file and the Audio Codec control is hidden on this page entirely. That is a deliberate consequence of the source, not a limitation you can toggle off. Add audio in a video editor after the fact if the clip needs it.

Does the conversion preserve my raw file's dynamic range and edits?

No. The 12–14 bits per channel that make a raw file worth shooting are compressed into 8-bit video, and any non-destructive adjustments stored as metadata — exposure, white balance, curve, lens corrections — are not applied. What lands in the 3GP is a straightforward rendering of the sensor data. For anything where image quality is the point, convert to a still format.

What video codec does the 3GP use by default?

H.264, which every device that still opens 3GP will handle. The 3GPP file format also permits H.263 and MPEG-4 Part 2, both selectable under Video Codec, and those are the right choice only when you are targeting a genuinely old handset. Per MDN's container guide the format additionally allows VP8, but the codec choices offered on this page are H.264, H.263, MPEG-4, and Xvid.

Why is my high-resolution photo blurry in the clip?

Two reasons stack up. First, every still is normalised to a maximum of 4,096 pixels on its long edge before encoding, so a large raw file is already downscaled at that point. Second, 3GP was designed for 3G-era phone screens, and picking a small resolution preset shrinks it much further. Choose a larger Video resolution, or accept that a mobile video container is the wrong home for a high-megapixel photograph.

Can I turn a folder of DNGs into one slideshow video?

Yes. Upload them all in one go, leave Merge strategy on "Merge images", and set the Duration you want each still to hold. Switching to "Video per image" does the opposite: one separate 3GP per file. Note that the ordering follows the uploaded files, so name them sequentially if the sequence matters.

Why can't I set a bitrate or a target file size?

Because image-to-video conversions hide those modes. A still image encoded as video has no motion to model, so bitrate and target-size controls would be misleading — the encoder is not making the frame-by-frame decisions those controls are designed to influence. You get Quality Preset, Constant Quality, and Constraint Quality; to change the file size, change the duration or the resolution.

Is uploading my DNG private?

Yes. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours. There is no sign-up, no watermark on the output, and files are never shared or made public. Raw files are large, so the upload is usually the slowest part of the job — a 3GP built from one still encodes very quickly once the file arrives.