Pro Res question

[Tom Wolsky]

The only thing that changes is the codec in which the material is rendered. If the material is ProRes and you change the sequence settings to HQ, everything has to be re-rendered to conform to the new codec. Unless your media is in film resolution you most likely have no need for HQ.

All the best,

Tom

Class on Demand DVDs “Complete Training for FCP7,” “Basic Training for FCS” and “Final Cut Express Made Easy”
Author: “Final Cut Pro 5 Editing Essentials” and “Final Cut Express 4 Editing Workshop”

[Jeff York]

Final Cut, in general, tries to operate in a non-destructive way. As Tom Wolsky writes, what you are seeing is the output of the timeline which FCP will want you to render since you changed the codec. At that point, you are seeing ProResHQ after FCP has created a separate render file that it’s playing back from. Since ProResHQ has a higher data rate than ProRes, you will not likely see a difference. It’s a little like taking a VHS tape and dubbing it to digibeta. You won’t really lose anything in the dub, but it’s still going to look only as good as the original.

In order for your experiment to yield useful results, you will need to take a file with a higher data rate than ProResHQ can handle (like 2k). Then convert from the original file into both ProResHQ and ProRes using Compressor.

Also echoing what Tom wrote, it’s unlikely you will need all the bandwidth that HQ provides unless you’re dealing with some really high end original footage (like film). For local TV broadcast, I’ve been very happy saving space and using ProResLT. It’s still a higher bandwidth than the transmitter uses. I just make sure not to go tossing out the original footage.

[David Levy]

Thanks Tom & Jeff.

Will do your ‘test’ suggestion jeff.

note: When I changed the sequence to HQ it doesnt show up as needing to re-render the current pro res clips. I also created a new sequence in the same project and it too didnt seem to require a re-render oft he 422 clips up to HQ. What am I missing?

[Rafael Amador]

[David Levy] “note: When I changed the sequence to HQ it doesnt show up as needing to re-render the current pro res clips. I also created a new sequence in the same project and it too didnt seem to require a re-render oft he 422 clips up to HQ. What am I missing?”
You have RT performance, but the sequence needs to be rendered on exporting.
rafael

http://www.nagavideo.com