can I desactivate Clipping from 115IRE to 100IRE in shake?
by JoseMiguel
on
Oct 15, 2006 at 5:00:08 pm
Hi, I've Digital Betacam and other files in final cut with a clipping over 100IRE, about 115IRE and when I export the clip to shake, apply an paint correction and back with the render to final cut the top of the image 115IRE is converted to a 100IRE by shake... can I desactivate this?
Re: can I desactivate Clipping from 115IRE to 100IRE in shake? by Andrew Shanks on Oct 16, 2006 at 2:54:50 am
I am guessing it will be to do with the codec you are rendering out as, ...I take it you are rendering a quicktime? First of all check your codec options for your file out node. Next thing (if you have high whites) is to make sure you are compositing in a range higher than 8bit (as the 8bit default clips all whites above 1). To maintain maximum quality with a source file format that has super whites (such as dpx or cineon files), you should be using 32bit float. To force your comp to move into 16bit linear or 32bit float, use the bytes node (found in the 'others' tab, inserted just after your source file-in node). Use advanced noodle view to see that you haven't got any 8bit paths that could be clipping your output.
Goodluck!
Re: can I desactivate Clipping from 115IRE to 100IRE in shake? by JoseMiguel on Oct 17, 2006 at 6:23:29 pm
I'm using quicktime uncompressed 10bit, and a 32bit float node after file in, but the whites are clipped from 115IRE to 100IRE, any of you have the same problem?... or is it a big bug?
Re: can I desactivate Clipping from 115IRE to 100IRE in shake? by keicol on Oct 18, 2006 at 4:34:01 pm
I'm no expert here but I'm wondering that if in your file out node perameters under the quicktime codec you might go there and choose the zero to some big number as opposed to the default which is some smaller NTSC number, I'm not near my system to give you the actual numbers but I can say that it's on the codec page when you choose the 10 bit uncompressed codec it'll come up as an option along with frame rate, let me know if that's it.
Re: can I desactivate Clipping from 115IRE to 100IRE in shake? by Bj on Oct 20, 2006 at 8:29:59 pm
Sadly, this is the normal way QuickTime does the conversion from YUV to RGB. It is happening in the FileIn, nothing to do about it except using third party codecs/ conversion programs.
