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IO HD for use with HDV 720p30

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tom valens
IO HD for use with HDV 720p30
on Nov 4, 2007 at 11:57:52 pm

Can I use the IO HD with footage from my JVC HD100 shooting HDV 720p30 (29.97)? I notice in the manual that I downloaded from the AJA site that there was no AJA 720p30 Easy Setup listed. Does anyone know? Thanks.



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JeremyG
Re: IO HD for use with HDV 720p30
on Nov 5, 2007 at 6:46:33 pm

What do you plan on capturing from?


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Tom Valens
Re: IO HD for use with HDV 720p30
on Nov 6, 2007 at 1:32:10 am

Jeremy,

Thanks for the response. For the time being I would be going from the component outputs of the camera (don't have a deck yet).

Tom Valens


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JeremyG
Re: IO HD for use with HDV 720p30
on Nov 6, 2007 at 3:41:21 am

I don't know, for sure, but I doubt it'd work. 720p60 yes, but 720p30 might not.

A call or email to AJA might set you up correctly.

Jeremy



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gary adcock
Re: IO HD for use with HDV 720p30
on Nov 6, 2007 at 2:39:22 pm

[JeremyG] "I don't know, for sure, but I doubt it'd work. 720p60 yes, but 720p30 might not. "

AJA does not currently include setups for 720p30 on any of their product line.

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows

http://library.creativecow.net/articles/adcock_gary/AJAIOHD.php


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JeremyG
Re: IO HD for use with HDV 720p30
on Nov 6, 2007 at 3:50:31 pm

But, if you made a 720p30 HDV setup, would it work? I have never worked with HDV and am not sure how the whole flagging system works (or doesn't work). Will the ioHD be able to extract the flags over analog component video?

Jeremy



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gary adcock
Re: IO HD for use with HDV 720p30
on Nov 6, 2007 at 4:51:10 pm

[JeremyG] "Will the ioHD be able to extract the flags over analog component video? "

there are no flags in an analog video stream

gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows

http://library.creativecow.net/articles/adcock_gary/AJAIOHD.php


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Tom Valens
Re: IO HD for use with HDV 720p30
on Nov 7, 2007 at 1:01:33 am

I called AJA Tech Support and talked to Jerry, who said there shouldn't be any problem - I just select the 720p 23.98 Easy Setup and then modify the presets for 29.98.


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JeremyG
Re: IO HD for use with HDV 720p30
on Nov 7, 2007 at 3:24:44 am

But how is the ioHD going to know what frames to extract? The component output is sending 720p60, no?


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Tom Valens
Re: IO HD for use with HDV 720p30
on Nov 7, 2007 at 4:34:03 am

The component output of the JVC HD100 in HDV mode is 720p30 (or 24 if set that way). The newest JVC's can record in 720p60, but not the HD100.


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JeremyG
Re: IO HD for use with HDV 720p30
on Nov 7, 2007 at 4:41:05 am

Hmm. Didn't know that 720p30 could travel down the pipe like that.

If I were you I would double check with a camera and a borrowed ioHD to make sure you are getting what you want.

Jeremy



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Justin Ferar
Re: IO HD for use with HDV 720p30
on Nov 8, 2007 at 8:10:52 pm

Hi Tom,

I have two JVC HD200's and know them well. I'm 98 percent sure that the analog outs on your HD 100 act the same as the 200.

Component out can be output from the cam as 720p60 or 1080i (user selectable). Yes, your footage is 720p30 but it's going to come out as 720p60, but it will look exactly like 720p30. If the IO HD can accept 720p30 then great but I think it's still going to think and want to lock onto the footage as 720p60 because it is in fact 720p60 coming out of the camera.

BTW- nothing wrong with working with 720p30 at 60 fps- just requires a bit more storage and rendering time.

Hope this helps.


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