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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

CineForm Officially Supports Red One

Many thanks... Just returned from a five day shooting spree and P4K worked beautifully very much in the field on my laptop which I had never attempted before.
 
David Newman said:
Here is beta of Prospect 4K packed with tweaks to help Red users.

Version 3.4.4 adds:

* more curve options for encoding and decoding through Active Metadata. Basically you can set the output curve to match that of RedSpace, non-destructivily, as an Active Metadata option. If you want this as the default, add -dR to the switches in the R2CF batch scripts. This will make your outputs be pretty much the same as RedCine. Within Premiere's Active Metadata controls the new curves are now available for content you have already converted.
Click to expand...

David(s)....
can you guys update the list of switches for R2CF on the website....
http://cineform.com/products/TechNotes/RedOneWorkflow.htm

I only noticed this flag by scouring the forums...
or provide a master list within the prospect 4k release stuff....

picky picky I know....
 
Good suggestion. We'll have the switches updated shortly....
 
I see you got it already....:gun:

a little off topic....but...

how long before we see cineform first light....I am very anxious to check it out....
 
David,

Is it possible to export using PDLog985 curve? (what settings?)
It is also possible to change the exposure (like 1 stop etc...)?

Thanks

G
 
PDLog986 is possible, I think, never tried as no one has requested that before. If it is not directly possible, everything can be added via a 3D-LUT.

Exposure controls potentially lose dynamic range and produce clipping, that's why we don't offer them as a base function. We preserve the full dynamic in the conversion, all before you do creative operations such as exposure tweaks and color corrections. This workflow makes the CineForm's files the new master, so we have to be careful with the controls offered. You can gain up the image using Active Metadata, therefore not producing any clipping (just super whites and blacks, all the data remains.) This can be added as post operation in Prospect 4K or using the SetActiveMetadata tool on the Mac, or you can re-exposure the image during the conversion by added a gained up color matrix (thru the +COLM=x,0,0,0,0,x,0,0,0,0,x,0 switch where 'x' is the linear gain, for 1-stop x=2, 2-stops x=4, for -1 stop x=0.5).
 
Thanks David,

so could you investigate more about PD986 and let me know?

thanks!

About the exposure :
actually i was thinking to going down with the exposure....
what is difference by increasing/decreasing the exposure or inc/dec the gain?

thanks

G
 
Looking into PD985 (well Cineon Log with white at 985) now, as it was partly disabled in the current release.

Exposure and linear gain are the same thing. 1-stop is twice the light, and in linear space the is 2x. To decrease exposure use a gain less than 1.0. One stop less is 0.5 gain.
 
Thanks David

What you mean for partly disabled in the current release?

About the Exp: got it...but...what should we write in the line ???...( sorry )

Thanks

G
 
Older versions had some Cineon curve support, but we recently changed the switches to have separate encode and decode curves (a good thing), but didn't add the cineon curve for this setup (maybe added very soon.)

The switch to add for exposure control is (for a 1 stop lower)

+COLM=0.5,0,0,0,0,0.5,0,0,0,0,0.5,0

While that might seem confusing, the 12 numbers are just the coefficients of a 4 by 3 color matrix.

red = [0.5 0.0 0.0 0.0]
grn = [0.0 0.5 0.0 0.0]
blu = [0.0 0.0 0.5 0.0]

where each line is [reg gain, green gain, blue gain, offset]

The color matrix can be useful to match cameras of different manufacturers, so it is a handy tool.
 
Thanks David

The color matrix seems a very very powerful thing...i really wish i could understand it.....

About the PDLog:
I thought that to encode using the PDLog985 was the same way to encode like ReDLog but with different value (different than -eL100 -b0),so do you think you can give it to us soon or is a complicated thing?

Thanks

G
 
Look at the curves PDLog seems to be Cineon curve with white at 985, and gamma at 1.7. Surprizingly a Log curve base 1000 very closely follows it with a slightly different white point. If you add -dL1000 you get an approximation to PDLog985, however the next reversion of Prospect 4K and R2CF should restore the Cineon curves.
 
Im sure this questions has been asked but I havnt been able to find it nor its answer.
Cineform is awesome but why doesnt it have an option to selectively convert full resolution files based upon an EDL. It seems a huge waste of time making this second high grade master for all the footage. Why not just render at full res what you need to use?
 
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