Proper frame and data rate?

[petruk]

Hi,
I need some help making my first DCP.

My video file is Prores 422HQ
29.97 fps
221 Mbit/s
83 minutes long

I am creating a dcp to put on a flash drive and send to a festival.

Can someone tell me the proper frame rate (30)?
JPEG2000 bandwidth ? Mbit/s

I am working on a Mac. I assume I can clone the file folder from my computer to a flash drive - but how should I format the flash drive?

Thanks very much.

[phili2p]

Hi,

Your DCP needs to created with 30 FPS - and by that the wrapping has to be SMPTE not Interop.
Don't change the maximum Bitrate of 250 Mbit. Go with 230 Mbit/s and you'll be happy.
Just to ensure to make projectionits happy, please use the ISDCF name and set up the details as recommended here:
https://isdcf.com/dcnc/

I'm still waiting for the dropdown-list for Dialog and Subs in DoM. In the meantime, you might look up your language here:
https://isdcf.com/dcnc/home/appendix-1a ... codes.html

Having a Mac, you're on the wrong side (regarding formatting drives). Your drive needs to be formatted as NTFS (at least). Usually hard drives come as ext2/3 formatted with inode -128.
While you need Windows or Tuxera for Mac to format, read and write NTFS on Mac. In case you own a NAS, you might format, read and write via that NAS. Ext2 with inode -128 is not that complicated but you need to use Linux in a virtual box or as portable USB drive.

This might be a helpful source: http://www.knuterikevensen.com/?p=2559


Best wishes
Philipp

[petruk]

Thank you. Philipp, for taking the time to explain this to me. I will give this a try and let you know how it worked out.
Cheers,
DAN MCGUIRE

[Carsten]

I think you can still find some cheap Toshiba portable drives that come bundled with Tuxera NTFS for Mac. The last one I bought was a 512GB drive for something like 35€. Here is a list of drives that come or work with that bundled Tuxera version.
https://support.toshiba.com/support/vie ... Id=4008404

Of course, you can always buy Tuxera (or Paragon) separately, it's not really expensive.

As Phillipp writes, from a Mac, NTFS is currently your easiest way, although Linux type ext2/ext3 is the 'official' format for DCP drives.

A large USB flash drive is not a good idea for anything beyong a short film. An 80 minute DCP at a suitable datarate (around 200MBit/s for your 221MBit/s Prores file) will easily eat 150Gbyte. It will take ages to copy the DCP onto that stick, and ages to copy it to the cinema server.

Get a standard portable disc (512GByte is sufficient), or an SSD (256GByte is sufficient), with a USB 3.0 interface.

Also, read this:

https://dcpomatic.com/manual/html/ch13.html

- Carsten