[gst-devel] MXF-wrapped JPEG2000 decoding

[Edward Hervey]

On Thu, 2010-12-30 at 17:12 +0100, Florian Agez wrote:
> Hi,
> 
> I'm currently trying to make a very simple pipeline that would take an 
> MXF file with JPEG2000 video essence as input and display it. For now, 
> the pipeline looks something like this:
> 
>      gst-launch filesrc location="source.mxf" ! mxfdemux name=d  d. ! 
> jp2kdec ! autovideosink
> 
> But that won't take me anywhere, I only get this error message:
> 
>      ERROR : element /GstPipeline:pipeline0/GstMXFDemux:d : Internal 
> data stream error.
>      Additional debug info:
>      mxfdemux.c(2797): gst_mxf_demux_loop (): 
> /GstPipeline:pipeline0/GstMXFDemux:d:
>      stream stopped, reason not-negotiated
> 

   Do you get any more detailed warnings when running the same command
line with "GST_DEBUG=2 gst-launch...." ?

   If nothing 'useful' comes up, please file a bug report with full
compressed log (GST_DEBUG=5 gst-launch .... > log 2>&1).
   Bonus points for quicker debugging if you also provide (a link to) a
sample file which fails.

    Edward

> 
>  From what I've experimented so far, it looks like mxfdemux has no 
> problem at all unwrapping the JPEG2000 code stream (if I just link the 
> demuxer to a filesink, I get a nice concatenation of valid JPEG2000 code 
> streams), but I can't think of a reason why jp2kdec would refuse to 
> handle this raw code stream. Adding to the confusion, when I try to 
> rewrap the code stream into an MJ2 file, I also seem to get a corrupt file.
> 
> I don't really know where to look now... Any ideas?
> 
> Thanks!
>