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cross-convert 1080i to 720p24 from P2
I’m doing a documentary project that was shot with Panasonic HVX200 P2 camera with footage captured on both firestore and P2 cards.
The bulk of footage is shot at 720p24 and that is the desired finishing format. There are, however, a couple of days of footage where the camera operator mistakenly shot at 1080i. This footage cannot be re-shot.
What is the best way to cross convert this 1080i footage to work effectively in a 720p timeline.
Thanks so much.
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DK Davis / Editor/ Post Super
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14 Replies
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The Kona 3 cards do this perfectly. We’ve been testing 720 to 1080i and the quality is just pristene and it’s all realtime.
What you’ll need to do is play the footage out of the camera through the Component video output and then use the AJA Component – HD-SDI converter. Just set the Kona 3 to convert 1080i to 720 on the way in and you’re all done.
If you’re working in HD, this card is just the way to go so long as you’re running a PCIe machine. It’s a nice swiss army knife with up / down convert and now cross-convert.
OR, if you won’t want to purchase a card, FCP should be able to render out the footage in a 720p timeline and it should look good. What you may want to do is export all the clips as self contained movies so you can just render them once and bring them all back in as 720 clips. Depending on how much footage you have it may take quite a while to convert all the footage over.
Walter Biscardi, Jr.
https://www.biscardicreative.comDirector, “The Rough Cut”
https://www.theroughcutmovie.comNow Posting “Good Eats” in HD for the Food Network
“I reject your reality and substitute my own!” – Adam Savage, Mythbusters
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I don’t have a Kona card and I don’t have the P2 camera though, all I get is the files on a firewire drive and I import those.
I guess I’ll have to do a test of converting files and exporting quicktimes from within FCP to see how they work.
Thanks
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DK Davis / Editor/ Post Super
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I did this going the other way 720p to 1080i recently using Compressor and it looked good.
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Use Cinema Tools to conform 1080i footage to 23.98.
Duplicate a clip and try a test.Mike Schrengohst
http://www.MotionZoneHD.com -
[John Pale] “I did this going the other way 720p to 1080i recently using Compressor and it looked good.”
yes but your are going from Progressive 720p to 1080 Interlace not the other way.
IF your camera op shot this as 1080i60 it is not an easy nor simple task to go to 720 progressive, and Compressor will do a really terrible job at making interlace into progressive.
Depending on the production you may have to go to a real transcoding system ( terranex , Ukon etc.) or find a friend with a Kona 3 card.< which may be cheaper to buy then passing a lot of footage thru a format converter>
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows
Chicago, IL -
I would use like a MAgic Bullet to get the 24P look and then convert to 720P, this is assuming that they shot it 1080/60i. If they shot 1080/24P or 24PA the answer would be different. So be clear on what you have and then we can recommend from there.
Best,
jan
Jan Crittenden Livingston
Product Manager, DVCPRO, DVCPRO50, AG-DVX100
Panasonic Broadcast & TV Systems -
Yes, the footage was shot 1080 60i.
I don’t have magic bullet but I do have Natress Film filters. Would they perform the same task ie. de-interlace and conform to 24p?
Thanks
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[Daryl K davis] “I don’t have magic bullet but I do have Natress Film filters. Would they perform the same task ie. de-interlace and conform to 24p?”
Yes they will,
Graeme’s filters are some of the best that you can get for this.But this is HD and you had better be prepared to do a lot of rendering and use a lot of storage to get the content to 720p and be prepared for it to look different.
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows
Chicago, IL -
Yikes… a 40 second clip took 8 minutes to export. I think I may have to think this through a bit more.
Being there is about 2-3 hours of footage to be processed, I would prefer only having to do this for the final clips used in the program.
This is my first adventure in P2 land so the Kona 3/tape capture thing may be a better way to go. It look like I may need to rent a deck and try getting a Kona 3 card somehow.
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DK Davis / Editor/ Post Super
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If it’s 1080 60i without any 3:2 pulldown, just add a deinterlace filter (essentiall making it 60p) and then throw it on a 720p 24 timeline and render. That’s it, works great and shouldn’t take very long to render. Export a self contained when you’re done and import it into your project.
But if it does have 3:2 pulldown, it will be a chore to convert it.
Sean
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