help me! 1080i 60i Native Editing in Premier ??

S

skylarkx

New member
frame0.jpg

△ I had shooted all of scenes as 1080 60i DVCPRO100


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△ but all clips were seen as 29.97fps (progressive format) after be imported in Adobe Premier CS4


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△ Both DVCPRO HD 1080 60i preset of Mainconcept and built-in Premier sequencers are indicating 29.97fps (Progressive format) in Video Setting


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△ I changed the sequence settings as 59.94fps in order to 60i interlaced editing... but...





After all...

Adobe Premier only shows every 2-frames the same in timeline as if he had deinterlaced pictures !!! (as if deinterlaced all of 60i to 30p and simply doubled them)

Thus Exportied media as 60i setting have every 2-frames the same.. It's not native 60i !!

I wanna source clips imported as native 60i (every fields are different) and wanna export timeline to interlaced mpeg 1080 60i(HDTV ATSC Contents SubProduction).. because all of equipments in my studio had that workflow.



Can anybody help me? Plz!!
 
No, the preset was right. 29.97 is the stupidly-named, but appropriate, frame rate for 60i video. The key is that it's not 29.97p. The preset is for interlaced video; you can see that where it says "fields: upper field first".

Go back to the preset and everything will work fine.
 
Just to expand on what Barry said...

When something says 60i, that means 60 Interlaced FIELDS, and two fields make a frame...thus 30fps (at 29.97). 60p is 60 actual frames per second...progressive. So when you see 720p60 (or 720p 59.94) that means 60 frames per second, and when you see 1080i60 (or 1080i59.94) that means 60 interlaced fields per second running at 30fps.

CONFUSING as hell, and I HATE the naming convention...just plain stupid.
 
There are two naming conventions:

* one is to use frames per second
* another is to use images per second

60i means 60 images per second, interlaced. That is, 60 fields per second.
30i means 30 frames per second, interlaced. That is, 60 fields per second.

And of course, unless you are shooting on digicam, 60 means 59.94, and 30 means 29.97.

It seems that EBU and BBC prefers frame-based notation, as well as such authorities in digital TV like Charles Poynton. Manufacturers of interlaced equipment prefer field-based notation because it allows them to use full frame size and fast image rate to convince the customers that interlaced is better. Like 1080i60, which should be more aptly named as 540p60 or 1080i30.
 
Thanx Barry, Shane, Cranky
I have solved problems by virtue of you all

Export preset - 1080"i" 29.97 upper field first - result in 60field/sec Interlaced fruit!!

It's just found chaotic and stupid name "29.97" for Interlaced pictures as you said..
Thanks, and Thanks very much :)
 
Yes, it's stupid, archaic, and inaccurate. :) Worse is "30i," which you still find in a number of legacy systems.
 
Because a "pair of fields" that take place at different moments in time, bear no resemblance to a "frame".

60i tells you there are 60 motion samples, and that 60i looks like 60p (but for the interlace effect).

29.97i looks nothing like 29.97p, it looks like (and is) "60i".
 
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