DV Key... Am I Incompetent?

[jussing]

It's virtually impossible because of DV's 4:1:1 compression - it only stores one color information pr. four pixels.

Cheers,
- Jonas

[scrimski]

Have a look at creativecow.net, there you will find tutorials about how to pull a key from DV.

[thatoneguy]

... or come to learn the simple joys of rotoscoping. :)

[m|3]

Although miniDV and keying are not the best of pals... remeber that 90% of the battle of pulling a good key is done when the footage is being shot (good lighting etc.) and not when you sit down to do the key.

[vfxbaby]

pulling keys on dv in not impossible. its quite easy. now pulling a perfect one, thats a different story. I dont know why people think its so hard?? what tools are u using?

[emack]

What you want is DV Matte Pro. http://www.dvgarage.com/prod/prod.php?prod=dvmatteae

It's at $199 plugin; AE and FCP versions are available. It handles the 4:1:1 chroma subsampling of DV properly, and gives some very surprising keys without much effort.

[A.Baroody]

You can pull keys from dv.

Keying is just dam hard in general...

I'm keying footage now that was shot on 35 and it's a challenge. Mainly because of the cinematographer and the director... who are all quite accomplished but do not understand how to shoot special fx. :)

For example, green things out of focus against a green screen......

Lots of DOF etc.

It's really about how well you shoot it.

DV makes it harder, but keying is never easy. its always a balancing act.

[DoubleSupercool]

One thing to do is isolate the RGB channels and blur the blue/green channels. In something like Fusion you can throw in an RGB->YUV node, then isolate a channel node, blur the node and then throw it back into an RGB node.

[vfxbaby]

What you want is DV Matte Pro. http://www.dvgarage.com/prod/prod.php?prod=dvmatteae

It's at $199 plugin; AE and FCP versions are available. It handles the 4:1:1 chroma subsampling of DV properly, and gives some very surprising keys without much effort.

Yep, also AE's keylight is also very good.

[dell]

Hi All

Could someone explain to me why its difficult to key miniDV footage, and what other media they would use instead i.e film.


Thank you.

[Vympel]

Hi All

Could someone explain to me why its difficult to key miniDV footage, and what other media they would use instead i.e film.


Thank you.
Is difficult key the DV format, why this format (and others compressed formats) don´t store all the color of image had the compressions. These formats compress the image to minimize the use of space and bandwidth. Formats "like" Film and uncompressed HD/SD don´t reduce the amount of data, but in compensation these formats demand more hardware power and better equipments (storage, cameras...)

[jussing]

Plus, even triple CCD mini-DV cameras give pretty lousy picture quality, plus people who shoot chromakey on DV usually do so because they're on a no-budget, which means they can't afford proper lighting equipment and a professional crew, which means the material recorded is usually less than stellar. :)

Cheers,
- Jonas

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