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Does the Shift Fields filter work?
Hi,
I’ve been asked to try and fix a project from a friend who has edited a wedding video as a favour. And as edits go, for someone who is learning, it is a noble effort, comprising of footage shot in DV Pal (lower field) and HDV (Upper field).
The sequence is DV Pal and the HDV has been edited into the sequence without being changed to lower field. My friend doesn’t have a broadcast monitor, so the interlacing problems have been spotted once a DVD has been played on TV.
Since reading on here, i’ve learned that FCP automatically adds the Shift Fields Filter (is it has in this case) but it hasn’t corrected the issue. I’ve tried the Shift Fields filter in the past and i’m not convinced by it.So, to correct this, do I need to change the HDV clips to lower field in the Browser, then laboriously replace all the original “wrong” HDV clips in the timeline, or is there are more efficient way?
The other thing i’ve tried, but hasn’t completely worked, has been to duplicate the entire sequence, then delete the DV Pal clips but leaving all the gaps in place, then export the whole sequence, with HDV clips left in their edit positions then into compressor and convert them to 1 DV pal quicktime at lower field, then re-export into the original sequence and replacing that over theoriginalupperfieldclips…DEEP BREATH!!
Please help.
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4 Replies
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HDV is upper field so don’t change it to lower because it isn’t. The DV is lower which is also what the sequence setting should be. Firstly check your sequence setting to make sure that it is set to lower, because if it isn’t and the HDV has a shift field filter, then it will be wrong. You didn’t identify which shots have a field error. Perhaps it is the DV and not the HDV. Also there is an opportunity to get the field order wrong making the DVD. Are you monitoring externally on an interlace monitor? Are you sure the error is in FCP or the DVD process which you gave no detail about?
Shift field filter on HDV works. If you are seeing field errors then there is a mismatch going on for sure. Also check that there aren’t two shift field filters on clips or that the filter is there but deselected.
Also it helps to know what version of FCP and details on sequence settings in a post to help take as much guessing out of answering.
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Hi,
Thanks for responding.
I’m using Final Cut version 6.0.4 and the sequence is set to DV Pal, lower field.
It’s the HDV clips which have the field error. But, I only know this through watching a DVD. I don’t have an external interlace monitor either unfortunately (I can feel the howls of derision already) and I know how important one is, but i’m working from a 24″ Intel I-mac & unless i’m mistaken, I can’t hook up to one anyway can I?
You’re right, it could be the DVD burning process. I tried exporting the sequence as a lower field mpeg2 via Compressor, but the HDV clips flickered. I did try exporting the sequence with the settings listed above (the HDV clips had the shift fields filter on, as applied by FCP) through Compressor as an mpeg2 but as progressive. Alas, the HDV clips still flicker. -
no howls of derision, BUT..
you are trying to address a field-based problem with no way of seeing fields!you might as well get me to do the job for you over the internet!
however you CAN easily hook up a monitor to an i Mac.
FW out of the iMac, into a drive, presumably,
FW out of the drive into a DV camera or deck,
then video & audio out of that and into your monitor.
simple!you may also be trying to hard with the Mpeg file you are making.
best approach is to export a QuckTime movie from FCP,
then deal with that in compressor, or DVDSP.but here’s how i CAN solve your problem over the internet.
drop a de-interlace filter on the whole lot…
presto – no more fields!nick
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Thanks for that tip on hooking-up to a monitor, i’ll give that a try and if it works, i’ll donate the contents of my will to the Creative Cow Coffers.
And as for the de-interlacing the whole lot idea, well, that’s just genius in its simplicity, as i’m only going to DVD anyway. It’s staring me in the face yet I never thought of it!
I’ll give it a try, the spring returned to my step.
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