CR2 to MKV Converter

CR2 to MKV Converter

CR2 is Canon's second-generation RAW photo format — unprocessed sensor data straight off a Canon DSLR. MKV (Matroska) is an open, flexible video container. This converter renders the RAW photo into a viewable image, then holds that single frame as a motionless still for a duration you choose and wraps it in an MKV file. The result is one steady picture shown for a set number of seconds: no motion, no audio, and not a slideshow. The honest use for it is a photo slate or title card inside an MKV-based editing or media-server workflow — if you just want the picture, convert to an image instead.

CR2 Format at a Glance

MKV Format at a Glance

How to Convert CR2 to MKV

1. Upload Your CR2 File: Drag and drop your .cr2 file onto the page or click "+ Add Files" to browse from your computer. You can queue several photos at once.
2. Set Merge Strategy and Duration: Open Advanced Options. Use Merge strategy to choose "Merge images" (combine several photos into one MKV) or "Video per image" (a separate MKV per file), then set Duration to control how long each still shows — from 1/60s per frame up to 10 seconds, with 5 seconds as the default.
3. Pick Quality, Background, and Codec: Choose a Quality Preset (Very High is recommended), set a Background Color (default black) to fill any letterbox bars when the photo's aspect ratio doesn't match the output, and optionally change the Video Codec from the default H.264.
4. Convert and Download: Click "Convert" and download your MKV. No sign-up, no watermark.

Frequently Asked Questions

Is the MKV a slideshow or a moving video?

Neither. With one CR2 file the output is a single rendered photo held motionless for the duration you set — no panning, zooming, or animation, and no audio track. If you upload several photos and choose "Merge images," they play back-to-back like a basic slideshow, but each frame is still a static image shown for its set duration. There is no interpolation or transition between them.

Does converting CR2 to MKV keep my RAW editing latitude?

No. A RAW file stores unprocessed sensor data, which is why you can recover highlights, shadows, and white balance after the fact. To put the photo into a video, the converter has to render it first — demosaicing the sensor data and baking in white balance, exposure, and tone. Once that rendered frame is inside the MKV, the latitude is gone, exactly as it would be in a JPEG. Keep your original .cr2 if you may still want to edit.

Which codec does the MKV use, and can I change it?

By default the MKV carries an H.264 video track, which is the most broadly compatible choice. MKV is a flexible container, so under Advanced Options you can switch to H.265 (smaller files, needs a newer player), VP9, MPEG-2, MJPEG, and others. Because the source is a single still with no audio, no audio codec is added regardless of the video codec you pick.

Should I convert CR2 to MKV or to MP4?

Choose by where the file will play. MKV is the better fit for desktop editors and media-server libraries (Plex, Jellyfin) and for players like VLC and MPV. If you need a clip that plays natively almost everywhere — iPhone, Android, QuickTime, browsers — MP4 is the safer container; use CR2 to MP4 instead. And if you only want a viewable picture rather than a video at all, CR2 to JPG is the right tool.

Why does my photo have black bars in the MKV?

A CR2 frame's aspect ratio often won't match your chosen output resolution. Rather than stretch or crop the photo, the converter pads the leftover space with the Background Color you select — black by default. Pick white or another color from the Background Color dropdown if black bars don't suit the project, or set a resolution that matches the photo's shape.

How small is the resulting file?

A motionless frame compresses heavily because every "frame" of the clip is identical, so modern video codecs encode the repetition almost for free. In our testing, a 5-second MKV made from a single 22-megapixel CR2 at Very High quality with the default H.264 codec came out to roughly one to two megabytes — far smaller than a moving clip of the same length, and much smaller than the original RAW.

My camera is a newer Canon — is my file CR2 or CR3?

Canon EOS DSLRs from around 2005 onward, with DIGIC 8 or earlier processors, recorded .cr2 files; newer mirrorless EOS R bodies with DIGIC X processors record .cr3. Check the file extension on your card. If your RAW files are .cr3, use CR3 to MKV instead — this page is tuned for the older CR2 format.

What happens to my uploaded file after conversion?

Your CR2 is sent over an encrypted connection, rendered and packaged into MKV on our servers, and then deleted automatically a few hours after conversion. There is no sign-up, no watermark, and your files are never shared or made public.