720 x 480 or 720 x 486 ?

greenspun.com : LUSENET : Editing DV Films : One Thread

Does anybody know why these two pixel dimensions appear in different DV apps, and what effect it has on editing ? We're using Premiere 5 and After Affects 4 (when we get to editing). Also, does anyone know the pixel dimensions of a frame shot in 16:9 on an XL1 ? thanks, Bob Sherman President and Janitor Phat Farm Productions phatfarm@io.com

-- Bob Sherman (phatfarm@io.com), March 05, 1999


Neither has an effect on the editing process, 486 is the SMPTE spec for CCIR 601 video. If your card outputs only 480, you end outputting 6 lines of black upon broadcast, this falls out of range of TV set reception so no BIGGIE !!!! Just not technically accurate. But the FCC police won't come after you. Avid must have bribed them :-)

4:3 and 16:9 do not relate to pixel dimensions. Both are at 720 x 486. It is a mathematical annomaly, BUT their is NO difference in resoultion between the differing aspect ratios.

-- Broadcast Bubba (nuschool@aol.com), March 20, 1999.

Response to 720x480

I've found that After Effects crashes when I try to render my old D1 comps to DV. The solution was to resize the comps to 720x486. No more crashes. This had something to do with the Apple DV codec, but I don't know what.

-- Phil Glau (CircusRedk@aol.com), April 03, 1999.

This is a PIXEL shape problem.

Try .9 (non square pixels)

-- Mike (CallMe@Jml3.com), December 31, 2003.

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