Convert MP4 to MJP2
How to convert .mp4 videos to .mjp2 format.
How to convert mp4 to mjp2 file
Converting MPEG-4 Videos directly to Motion JPEG 2000 Sequence Format (.mp4 to .mjp2 conversion) should be possible, even though your options are limited.
It appears that your only option is using Adobe Premiere Pro, which should allow users to import MP4 videos and export them in MJP2 format.
