Re-use DCP to add soft subtitles - passthrough video ?
Posted: Wed Apr 24, 2019 6:52 am
Hello
Using DCP-o-matic 2.12.20 on macOS, I want to add a subtitle file to an existing DCP. I don't want to make a VF DCP, but a new OV DCP by re-using the existing audio and video MXF from the current DCP. I'm in the second case "Making a complete DCP with projector-added subtitles" of the manual :
https://dcpomatic.com/manual/html/ch16.html#idp39.
I make sure not to change anything on the audio and files (zero crop, zero scale, no color-profile change, same container ratio, same framerate, same audio channel assignations, same level, ...) :
The SRT is set not to be burned-in, to avoid video encoding :
Yet, when building the DCP, it seems DCP-o-matic transcodes the ressources : there's a long "Encoding" process taking place on DCP generation.
My question is : when re-wrapping an existing DCP (to add soft subtitles for example), how can I be absolutely certain than DCP-o-matic passes through the ressources without transcoding/re-encoding them again ?
Thanks
Using DCP-o-matic 2.12.20 on macOS, I want to add a subtitle file to an existing DCP. I don't want to make a VF DCP, but a new OV DCP by re-using the existing audio and video MXF from the current DCP. I'm in the second case "Making a complete DCP with projector-added subtitles" of the manual :
https://dcpomatic.com/manual/html/ch16.html#idp39.
I make sure not to change anything on the audio and files (zero crop, zero scale, no color-profile change, same container ratio, same framerate, same audio channel assignations, same level, ...) :
The SRT is set not to be burned-in, to avoid video encoding :
Yet, when building the DCP, it seems DCP-o-matic transcodes the ressources : there's a long "Encoding" process taking place on DCP generation.
My question is : when re-wrapping an existing DCP (to add soft subtitles for example), how can I be absolutely certain than DCP-o-matic passes through the ressources without transcoding/re-encoding them again ?
Thanks