Replacing PCM MXF File

[Herbert]

Dear friends,
I know a DCP can be recreated without re-encoding,
but when I tried it looked like DCP-O-Matic started to reencode/remux.
This takes long on my computer.
Not a topic now.

But I was facing the situation where a festival proposed
to give them the stereo mix for a certain venue and not surround.
Though they demanded DCP we agreed that they received a high-bitrate /Stereo H264 mp4 instead,
almost as big as the original Prores422 file to keep quality.

To save space, I only store the ISDCF-named folder,
not the video it is generated from.

So I wonder, if a stereo DCP might be wanted:

Shouldn't it be sufficient to simply replace the original PCM MXF surround-file
with the stereo version and change the ISDCF-naming of the root folder for this?
The stereo PCM MXF file could be generated from black video, I assume the
(dummy) image becomes extremely small and encoding should be very quick...?

Best,
Herbert

[Carsten]

No, this wouldn't work. You can not just replace a file within a DCP folder structure. You need to recreate the full DCP with the new file, or, create a version file. But you still need access to the old DCP/OV to create a VF.

- Carsten