Free online JP2 to AVI converter

Some video editors and playback devices accept AVI but not JP2 images. Because JP2 is a still-image format, conversion creates a video that repeats the image for a chosen duration.

What the JP2 format is

JP2 is the JPEG 2000 image format, used for still images where high image quality or specialized imaging workflows matter, including scanning and geospatial work. You may encounter JP2 files exported by image software or produced by imaging systems; the format itself does not contain video frames or timing.

What the AVI format is

AVI is a video container that can hold video encoded with different codecs, such as Motion JPEG or Xvid. It is supported by many older editors and playback devices, but compatibility depends on both the AVI container and the codec inside it; Motion JPEG is a practical choice for a simple image-based clip.

How to convert JP2 to AVI

Online on 101convert.com

1. Upload the JP2 file or files. Multiple files can be converted in one batch; the page shows the per-file size limit.
2. Select AVI as the output format and set show each picture for to choose how long each image appears.
3. Start the conversion and download the AVI file when it is ready.

Offline with desktop software

FFmpeg is free and open source, and runs on Windows, macOS, and Linux. If its build can decode JP2, it can create an AVI directly; support for JPEG 2000 decoding depends on the build. For a straightforward workflow, use ImageMagick to make a PNG intermediate, then FFmpeg to create a five-second Motion JPEG AVI:

1. Install ImageMagick with JPEG 2000 support and FFmpeg. Convert the image to PNG: magick input.jp2 frame.png.
2. Make the AVI at 25 frames per second: ffmpeg -loop 1 -framerate 25 -i frame.png -t 5 -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" -c:v mjpeg -q:v 3 output.avi. Change -t 5 to set the clip duration in seconds.

Quality and compatibility

The output is a sequence of repeated frames, not an animation recovered from the JP2 file. AVI does not specify a single codec, so confirm that the target editor or device supports Motion JPEG; the -q:v value controls FFmpeg’s quality setting, with lower values generally producing higher quality and larger files.