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field order
I have imported a QuickTime footage from an AVID system rendered upper field first.
I then put it in Premiere 2.0 in track one and added a graphic with motion effect in track 2. In the field options of track 1 (the one with my video rendered upper field first) I choose the “Reverse Field Order” option.
Then I exported it to DVD. When I played the DVD I have noticed that it was running with a wrong field order, but the motion effect I have created with a graphic in track 2 was correct.
I then returned to Premiere and disabled the “Reverse Field Order” option in track 1. I exported the sequence again to DVD and it played again with the wrong field order.
What’s the workaround here? -
5 Replies
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Some details will help trace your problem:
What are your project settings? (NTSC, PAL, D1, DV, HD, HDV, etc.)
What is the footage you are importing (pixel dimensions and PAL/NTSC)?
What codec was used to make the QuickTime?
-jeff
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Hi Jeff,
What are your project settings? (NTSC, PAL, D1, DV, HD, HDV, etc.)
The project is set to NTSC DV
What is the footage you are importing (pixel dimensions and PAL/NTSC)?
The footage is QuickTime 720 x 486 rendered in After Effects – upper field
What codec was used to make the QuickTime?
Avid ABVB codec
Thank you for your help.
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I think that reverse field order is an instruction as to how that clip should be re-rendered IF it is necessary for it to be re-rendered (due to an effect or transition).
If there’s no need to re-render it, then the clip will just be copied as-is to output, so the field order will not actually change.
DV is lower field-first, so if you are able to recreate the upper field clip as lower-field first this is probably the best solution. Otherwise you can take the upper-field-first clip and shift all the lines vertically by a single scan line – that will change it to lower-field first but lose the top (or bottom) scan line.
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Thank you for your help.
I remember that sometime ago I heard about this procedure.
I’ll try it.
Thank you. -
Shifting up (or down) one pixel is probably the best solution to try. The problem arises from putting 486-high footage into a DV project, which is 480 high. If the image is centered, you get a 3-line shift, which reverses fields. Also contributing to problems is that in some AVID software, the upper/lower field choice is backwards from everyone else; i.e., they use upper = odd field first, whereas the rest of the world has standardized on upper = even field first, so I’m never sure what to trust with AVID… That could just be my problem.
-jeff
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