On Fri, 18 Dec 2015, Carsten Kurz via DCPomatic wrote:
Am 18.12.2015 um 00:58 schrieb Parke Gregg via DCPomatic:
Hi. I have a DCP I made last week, but I need to
replace the audio. Is there a relatively fast way to replace the audio without starting
over from scratch?
Well, if you kept the original project file/folder/metadata, it is easy
to replace just the audio. If you deleted everything after you created
the DCP, no other chance than to start from scratch. That means, another
J2C compression run.
You could import or reference your existing DCP, as you tried, but with
a regular import, DOM will have to decompress and recompress the image
track all over, and with the reference DCP option, you can not just
change the sound track, I think.
If you import an existing DCP and make a new one it will re-use J2K
without decomp/recompression if it can (even if you are not referencing);
see the somewhat terse bit of the manual here:
http://dcpomatic.com/manual/html/ch05s03.html
The confusing part is that if you just import a video MXF it currently
will not recognise it as such and just pass it to FFmpeg which will
decompress it. That should really be fixed at some point.
Cheers,
Carl