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IO HD and ProRes – RT playback?
This is going to sound like a really stupid question to some of you.
Say I have FCP 6 and Io HD. Say I have 2 or 3 streams of RT playback – ProRes media with CC/effects in a ProRes sequence. When I play it out, it would seem to me that:
– each stream is decompressed
– effects are applied
– streams are mixed as needed
– the result is compressed as ProRes
– goes through FW800
– and is decompressed in the Io for display.Is this really the way it works, and if so what’s the advantage to having it go back through ProRes at all?
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19 Replies
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How is this different from any other device? Substitute your flavor of PCI for FW800.
Jeremy
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Yeah it is great that we can do that and you can take delivery in July!!! 10 bit in and out to the Mac Pro or Mac Book Pro via firewire 800 YEAH MAN got to be loving that
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I’m thinking my question wasn’t very well worded. I’m also thinking I’m missing something big here.
Aside from the ability to use with a laptop, what’s the advantage to a ProRes compression pushed through a FW800 pipe, compared to a direct card output of an uncompressed signal?
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I guess the real question is what are you trrying to do?
A laptop has no way of handling the data rate required for uncompressed HD, so the ioHD handles that math for you.Life Begins at 155mph
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Thanks. I guess the answer is that the Io HD is only an advantage for laptops. And I may need that. Just trying to understand if there was some other advantage I wasn’t seeing.
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Yes, LTC in and out (great for on set capture) HDMI if that’s cool to you and all sorts of other ins and outs. It works as a stand alone converter for video. The only thing it doesn’t do is uncompressed HD. Uncompressed SD is supported as well as HD via ProRes and other compressed formats.
Jeremy
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I forgot to add the the ProRes codec is in hardware of the IoHD and takes the processing load off of your computer.
Jeremy
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> I forgot to add the the ProRes codec is in hardware of the IoHD and takes the processing load off of your computer.
But not with RT playback (altered or composited media) if my assumptions are right (see first post). It would require an additional processing step in the computer – recompression to send to the Io HD – compared to a PCI card.
I’m really not trying to put down the Io HD in any way,. Just trying to understand it better.
Thanks for the other details, Jeremy!
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As it doesn’t get compressed with a PCI card, the data just moves along the path, in this case the path is FW800 instead of PCI. I’d imagine that it wouldn’t need to be recompressed as it’s probably some sort of uncompressed stream to the ioHD, but I am not really sure how it works on a super tech level.
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knowing the pro res is built in to the IOHD it opens up a whole new world for the small and one off shops that may only have a laptop and want to edit on site and then we take the same unit plug it into our MAc Pro in our studios and we are set. The perfect all in one solution. Allpe and AJA did a great thing working together on this one.
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3am Studios llc.
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