[FFmpeg-devel] Jai Menon: How to use libopenjpeg wrapper for jpeg2k decoding?

Ed Sutton edsutton.spam
Thu Jan 29 16:27:42 CET 2009

Your FFmpeg post about your FFmpeg patch for jpeg2k decoding was 
forwarded to the OpenJPEG group.  I am learning ffmpeg and VLC with the 
goal of making a motion JPEG2000 video player.  I hope  you might share 
your progress with using libopenjpeg in ffmpeg.  I had some questions:

Can you give me an example on how and what it can be used for?

Will it work on motion video that is jpeg2k encoded or only stills?

How is a patch applied ( sorry I am working on Linux but I am new to 
this OS )? 
Is a patch a source code merge or a binary merge that you apply over the 
current ffmpeg version source or binary?

Thanks in advance,



---------- Forwarded message ----------
From: Jai Menon <>
Date: Tue, Jan 27, 2009 at 5:56 AM
Subject: [FFmpeg-devel] [PATCH] libopenjpeg wrapper for jpeg2k decoding
To: FFmpeg development discussions and patches <ffmpeg-de... at mplayerhq.hu>
This has proved useful for debugging the soc code and hopefully for
other purposes as well.

The code itself is meant for review but the buildsystem part is mostly
rfc. I don't know if building ffmpeg/lavc with
openjpeg support makes it unredistributable.

Also, I have tested this only with jpeg2k conformance suite since my
last attempt to download a R3d file failed
miserably :-) It would be interesting to know if those work as well.



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