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4K DCP - Burning Subtitles
Posted: Mon Apr 16, 2018 1:08 am
by Guddu
I have a 4K unencrypted DCP that I will need to re-encode as I need to burn subtitles to it. Is there any known issue in DOM when it comes to 4K content? Is it ok to generate a 4K DCP or shall i bring it down to 2K just to be safe? Anything else I should be careful about for this conversion?
Appreciate your guidance.
Re: 4K DCP - Burning Subtitles
Posted: Mon Apr 16, 2018 10:45 am
by Carsten
You should be fine doing this. I suggest you do a short passage using Trimming and see how it comes out in the player.
When burning in subs into an existing DCP or MXF, DCP-o-matic checks which frames will actually have subs added, and will only recompress those frames with actual changes. For a 4k feature, I suggest you set the compression data rate as high as possible (my suggestion would be 200-240MBit/s).
That also means - if you go from a 4k feature to a 2k DCP - ALL frames will be recompressed.
- Carsten