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Good camera for SD Green Screening
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PPro has a native HDV edit mode…for a couple versions now.
I typically transcode to CineForm, but of course that really doesn’t “add” any data…
As Karl said, certainly 4:2:2 footage direct from the camera is preferable to HDV 4:2:0 from tape or an encoded HDV file, but I’ve keyed HDV with very reasonable results.
A high quality format can’t overcome poor lighting and exposure technique as well as good technique can compensate for a lower quality image format…
As with so many things in our business, technique still reigns supreme.
TimK,
Director, Consultant
Kolb Productions,CPO, Digieffects
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I´ve performed keying quite well a couple of times with standard miniDV-equipment. (nothing counts as much as lightning, as stated above a few times) I Used the Canon MV900 and XL2 for recording, streamed video at 720×576 (in Europe), imported the footage into an AE composition defined at HDV-resolution (1440×1080, again, in Europe), scaled the thing and ended up with a composition performing quite well on a sub-standard laptop, on the run. Mind you, this laptop did not render any of the final editions. But it works impressively, and it´s cheap.
Angry Arts
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that sounds alot like my situation lol. how did u stream the video onto your laptop?
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Curious. That camera, according to the JVC website, records 25mbps HDV like very other HDV camera. How can it output any better quality than any other camera with the same lens? Isn’t all HDV 4:2:2? All compressed according to the same formula? The signal out the SDI port playing back from tape would be the same signal out the FW port on any other camera? The Sony EX1 at least records at 35 mbps. The Sony V1 send uncompressed out the HDMI port, but if playing back from tape, then the “uncompressed” signal was of course compressed earlier on already. DVCPro50 is certainly even better than anything at 25mbps and is not interframe compressed to boot. Or what am I missing.
George Socka
BeachDigital
http://www.beachdigital.com -
Welcome to the world of multi-format recording 🙂
True, HDV is “HDV”, but not HDV is the same, and not all HDV cameras are limited to outputting in HDV.Look for the book by Douglas Spotted Eagle on this – Really a great primer. He masters the explanation of what is DV.
I have yet to see Firewire support 4:2:2.
Cameras with HD-SDI outputs output what the “camera” portion of the camcorder sees. Sony’s new XDCAM1, and the JVC are two cameras under 7500 that have this feature. The bit rate of the captured signal will have as much to do with the capture device as the camera. In our case, we capture the JVC in studio to an Apple MAC via a Kona 3 card at over 35 Mbps. It is beautiful footage, and it is 4:2:2.
If you record onto the internal tape drive, the recording format is HDV, and compresses the signal using a complex formulation based on the type (DVCPRO, MPEG2, HDV — read GOP vs Long GOP, Interframe vs Intra-Frame) that results in the bandwidth you referenced – at 4:2:0.
Panasonic’s HVX-200 will record 4:2:2 in the DVCPRO format onto P2 cards, just as the XDCAM-EX will record 4:2:2 to EXpress cards using MPEG-2.
Confused yet?
I was. We selected the JVC because at the time it was the only HD-SDI camera with interchangeable lenses and HD-SDI in its category. It is a wonderful 720p studio camera that shoots at 1080i too.
We’ve had the pleasure of shooting the Sony XDCAM-EX1 – beautiful gamma, larger 1/2 inch chips gave great DOF, but the unit was, for me, very touchy on the focus and a little soft. I DID NOT have the time to work thru the setups. EXCELLENT field camera.
Now that the EX3 is out with interchangable lenses, I am game for a shot at it. The SxS Express Card workflow is wonderful, as is the option to capture direct with the HD-SDI.
Hope that helps!
Karl
Karl Krummenacher
Co-Founder, Chief Creative Officer
Activated Marketing
http://www.activatedmarketing.com -
May have gone overboard on explaining. My laptop doesnt support firewire, so Im streaming it on my desktop on a portable HD, and subsequently dump it on both external HD and the laptop through USB.
Angry Arts
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You could try a 4:2:2 color space camera. A great alternative to expensive camera is capturing via HDMI to the blackmagic card and down convert your footage to process the green screen.
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whats a good program to downconvert with? my pc currently cant even open a HD video file it freezes right away.
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After Effects, or simply repair your PC
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its not really a repair issue is it? i mean just opening a 1920×1080 file is too much for my laptop to handle i believe. Its a Alienware so ya its nice but it was designed for gaming not editing. should i be able to open a HD video on it?
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