RUSTTY ON THE FACTS PSF to PSF
Conversion of 'i', p and psf formats with a MD-DUCC
Some of you may have noticed the check box in the USB control panel that says:
' Recognize 1080 i as 1080 psf '
This is engineer speak, I will try to write it down as it was explained to me, without messing it up I hope.
For example, 1080i 59.94 and 1080 psf 29.97 have the same format structure.
The only difference is the way the fields are perceived.
For interlaced, field 2 comes 1/(field rate) after field 1
For psf, field 1 and 2 occur at the same time. Where is this helpful?
More and more psf formats are coming to market, for instance some high end Digital Cameras used
in production, output multiple psf formats at different frame rates. If you are doing a production and you are recieving a 1080 psf 29.97 from one of these cameras or
recorders, go to the MD-DUCC Control panel and select the check box
' Recognize 1080 i as 1080 psf '
You will not be creating an interlaced product, this is just a method that the hardware uses to understand
how to store (process) frames. The label for this switch could better reflect the function, but as we said
it is engineer speak. (suggestions?)
What will happen if you don't turn this on, you may occassionally see a frame jump or skip.
So, if you accept any incoming psf format and plan on converting it to a different frame rate, select this
check box.