openjpeg tools in ubuntu precise image_to_j2k -i /input.tif -o /output.j2k -cinema2K 24

openjpeg version 2.1.0 opj_compress -i /input.tif -o /output.j2k -cinema2K 24

I noticed a dramatic increase in filesize when I switched from the openjpeg version in ubuntu precise to the most recent version I compiled form source. The same input file results in nearly double the output size.

I started noticed it using the asdcp-wrap tool in the asdcp library from http://www.cinecert.com/asdcplib/ I wrapped a testsequence of 24 frames of the same picture. The tool complained about the bitrate: "bitrate 250 exceeds maximum 250 (see option -r)" The inspection with the command asdcp-info showed that the average bitrate of the sequence was 250.01 Mb/s. Sequences wrapped from pictures generated with the older version of openjpeg showed a much lower bitrate.

I looked through the changes in the recent versions of openjpeg and saw a lot of changes to improve DCI compliance.

I am not quite sure what to make of the situation. I am i misunderstanding something? Is the bug in the asdcp library or in openjpeg?

Sorry for posting it here, found the google group section shortly after. I reposted it there, since it is more a general question than a bug/issue.