increased bitrate form resulting file after compression with -cinema2K 24 profile

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?

Original issue reported on code.google.com by sebastia...@gmail.com on 1 Jan 2015 at 11:14

iron261 / openjpeg

increased bitrate form resulting file after compression with -cinema2K 24 profile #467