Free online JP2 to MP4 converter

Some video editors, social platforms, and playback devices accept MP4 but not JP2. Converting a JP2 still image creates a video that holds the picture for a chosen duration.

What the JP2 format is

JP2 is the JPEG 2000 image format, used for still pictures in areas such as scanning, medical imaging, and geospatial work. Image-processing and scanning software can create JP2 files, so they may arrive as exports or archived source images. JPEG 2000 supports lossy and lossless compression.

What the MP4 format is

MP4 is a multimedia container commonly used for video encoded with H.264. It is supported by most video editors, phones, browsers, and sharing platforms. Since JP2 is a still-image format, conversion makes a video that displays the image over time; it does not create motion or audio.

How to convert the file

Online on 101convert.com

1. Upload the JP2 file on the converter page. Several files can be added as a batch; check the per-file size limit shown on the page.
2. Set show each picture for to choose how long each image appears, then start the conversion.
3. Download the resulting MP4 file.

Offline with desktop software

FFmpeg is a free, open-source command-line tool available for Windows, macOS, and Linux. If your FFmpeg build can decode JPEG 2000, this command creates a five-second, 30 fps H.264 video without audio:

ffmpeg -loop 1 -i input.jp2 -t 5 -r 30 -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2,format=yuv420p" -c:v libx264 -an output.mp4

Replace input.jp2 with the source filename and change -t 5 to the required duration in seconds. The scale filter adjusts odd image dimensions to even dimensions for compatibility with the selected pixel format.

Quality and compatibility

MP4 video encoding usually converts the JP2 image to 8-bit color and may lose detail or color precision, especially if the source is high-bit-depth or uses a specialized color profile. H.264 with yuv420p favors broad playback compatibility; retain the original JP2 if you need its full image quality.