- Do not get confused between “frame aspect ratio” and “pixel aspect ratio”. They are quite different. See the following:
- This tutorial for details on correctly working with aspect ratios in CS4 and later.
- Aspect ratios in the Premiere Pro CS4 Help.
- Aspect ratios especially About aspect ratios in the Premiere Pro CS3 Help.
- “About aspect ratio” in the Premiere Pro 2.0 Help.
- “About aspect ratios” in the Premiere Pro 1.x Help.
Pixel Aspect RatioEdit
- Nik Skjoth said:
If you want the old (CS3) aspect ratios to take effect in CS4, simply select DV 16:9, then go to the general tab. Change the Editing mode to Desktop, and change 720 to 702.
- Wil Renczes said:
PAR has been a discussion internally during this cycle, and I agree that the current PARs used in Premiere (actually, all the products for that matter) aren't 100% accurate. We're trying to do a product-wide change to address this in our next release.
FWIW, these are our agreed-upon ratios going forward (we're basing ourselves on information that can be found in "Digital Video and HDTV, Algorithms and Interfaces" by Poynton, for those who are curious):
Square Pixels (1.0) 1 : 1
D1/DV NTSC (0.9) 10:11
D1/DV NTSC Widescreen 16:9 40 : 33
D1/DV PAL (1.067) 59 : 54
D1/DV PAL Widescreen 1024 : 702
Anamorphic 2:1 (2.0) 2:1
HD Anamorphic 1080 (1.333) 1920 : 1440
DVCPro HD (1.5) 3 : 2
- See Support:kb329473 Widescreen and fullscreen video for conversion settings.
- There are plenty of resources for converting between aspect ratios.
- See Aspect Ratio Converters for Premiere for practical examples. (Note: This link is currently not working and may be removed.)
- Steven Gotz said:
And when you change the size of the frame, make sure the lower number is divisible by 72. That makes it divisible by both 8 and 9.
So, some of my favorites are 512X288 and 640X360
- Digital Video and Field Order explains how aspect ratios work.