DCP verification - Error

[rosanamadalina]

Hi everyone,

When checking my latest DCP (made from a previous DCP), I got the results as "A picture frame has an invalid JPEG2000 codestream (invalid COC component number". The original DCP also has this error.

I tried looking it up, but got nowhere. What does this error mean, in practical terms? What can happen when it playbacks on a projector?

Thanks!

[carl]

Do you know what tool made the original DCP?

Also, what version of DCP-o-matic are you using?

[rosanamadalina]

Hi Carl,

From what I can tell from the cpl file, it was made with "Colorfront Transkoder", I believe.
I'm using Version 2.16.35.

[carl]

Hi there,

I suspect this is a false error from DCP-o-matic (especially if the DCP originally came from Colorfront Transkoder, which I would not expect to have playback-threatening errors). I'll relax the check in DCP-o-matic.

If it's at all possible to get hold of the DCP, that might be interesting; but no worries if not.

The reason your new DCP gives the same error is probably because DCP-o-matic has re-used the same JPEG2000 data.

[carl]

If the DCP is not available could I send you a test version of DCP-o-matic to find out what the problematic value of this COC component number is?

[rosanamadalina]

Hi Carl,

Unfortunately, I can't provide you the DCP. I can, however, pass it through the test you mentioned.
Let me know how to proceed.
Thanks!

[carl]

Thanks, it would be helpful if you could run the same verification again with this test version (see below) and report the error again (it should now include a number...)

• Windows
• macOS

[rosanamadalina]

Hi Carl,

Here's the result:

"A picture frame has an invalid JPEG2000 codestream (invalid COC component number 1)".

Not sure if it's relevant, but this DCP was made using Interop, not SMPTE.

[carl]

Thanks for checking! I think that error is wrong, and I'll relax it in the next version of DCP-o-matic.