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Tearing effect in converted DV footage
So I had a DVCAM project in PAL. I needed a NTSC version so I ran a conversion via SDI from a DSR 1500 PAl to a DSR 1500 NTSC. Then I recaptured the new NTSC tape via firewire with default DV settings in FCP 7.0. The video looks ok for the most part but there is a slight but noticable tearing effect when there is movement. It’s noticable mostly because it comes in for a few frames then disappears again. When I ran it through compressor to make a DVD the pixelization is even worse.
I think the problem might have arose during the since the frame size on the SDI output is a slightly different size. Is there anything I could do differently on the dvd render or the capturing process to reduce or eliminate this problem?
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10 Replies
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This is a field dominance issue. Your fields are not being converted correctly. Get a hold of a copy of the Nattress Standards Conversion filter and apply this to your PAL video and it will convert it correctly on your NTSC timeline. The filter only costs about $100 and is very well worth the investment for you.
PAL to NTSC conversions are never easy but the Nattress filters will solve your problems.
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Wayne Carey
Schazam Productions
http://www.schazamproductions.com
https://blogs.creativecow.net/waynecarey -
I may be able ot get that in the future but are there any other solutions to correcting the fields on this footage thats already been converted? Can I run it through cinema tools ro something?
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Not really…
BUT, you can edit your program in PAL, export to Quicktime, then recompress in Compressor to an NTSC file. THEN you can bring it back into FCP to output to an NTSC tape.
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Wayne Carey
Schazam Productions
http://www.schazamproductions.com
https://blogs.creativecow.net/waynecarey -
Also I lookedit up and tried to install a demo version of the plug-in. Look like a great product but apparently it doesn’t work with FCP 6.
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Really?
All of Graeme’s other plugins work for me. Contact Graeme Nattress and he will help you.
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Wayne Carey
Schazam Productions
http://www.schazamproductions.com
https://blogs.creativecow.net/waynecarey -
Ok so a slight update.
I tried the demo version of that frame converter filter. It looks ok but I think the video looks inferiro to our hardware transfer. I found another filter, one of Joe’s filters, that allows manual shifting of fields. I’m trying that one out right now but finding the right combination(it gives you options to shift upper and lower fields as well as shift forward or backward a field).
Hopefully I can find a combination that looks right on this.
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Works just fine in FCP6. Email me if you’ve got problems and I’ll work with you to ensure it all works.
Graeme
– http://www.nattress.com – Film Effects and Standards Conversion for FCP
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Ok…
I don’t mean to sound condescending… but if your hardware conversion was so good, you wouldn’t be in this situation.
I think you might be better off editing in PAL and doing the conversion later.
I will give you this… Using a hardware standards converter is always better, but it sounds like yours must be having problems if you’re in this mess.
Compressor can do this conversion for you pretty well. I haven’t done this myself BUT I have heard folks on her having great success using Compressor for standards conversion.
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Wayne Carey
Schazam Productions
http://www.schazamproductions.com
https://blogs.creativecow.net/waynecarey -
You don’t mention the use of a standards converter at all–only the two VTRs. Is there a nice Snell & Wilcox that was not mentioned?
I’d take Graeme up on the offer to help and go that route. -
I agree…
You can’t just hook up a PAL machine and play out of it into a NTSC machine to get a proper conversion. There’s more to it than that.
_______________________________
Wayne Carey
Schazam Productions
http://www.schazamproductions.com
https://blogs.creativecow.net/waynecarey
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