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1080p @ 29.97fps 10 bit Uncompressed RGB
Hi
I’m trying to capture HD footage at 1080p 29.97 10bit Uncompressed RGB, having a few problems.
Has anyone had any success trying to do this and is it actually possible at this frame rate?
Thanks
Simon
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15 Replies
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[Simon Dinnigan] “Has anyone had any success trying to do this and is it actually possible at this frame rate? “
As long as your drive is fast enough, yes.
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The raid is definitely fast enough, but the colours are coming out all wrong, almost like a negative.
We created a custom Kona capture preset in FCP but it did not seem to work. The file size was 237MB per and playing back, but as I said the colours were all wrong.
Settings:
180p 29.97
10bit uncompressed
RGB 4:4:4Any ideas?
Thanks
Simon
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What’s your source?
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We are taking a signal out of a PS3 through a Gefen HDMI to HDSDI scaler outputting 1080p 29.97 RGB signal.
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So why are you trying to capture dual link 4:4:4 RGB? Way overkill.
Just set your capture to ProRes or ProResHQ 1080i (or 8 or 10bit Uncompressed if you need Uncompressed) and capture plain ole single link 4:2:2 video. It will be great. That HDMI is only 8bit anyway.
Jeremy
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Jeremy
If it were up to me I would have done this from the outset, but the bosses who have nothing better to do than put us and the equipment through our paces want to see the files in the maximum quality possible, however indeterminate that may be.
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[Simon Dinnigan] “We are taking a signal out of a PS3 through a Gefen HDMI to HDSDI scaler outputting 1080p 29.97 RGB signal.”
That is not 1080p nor is it 4:4:4
capturing 4:4:4 content in FCP requires a hardware card and a Dual Link HDSDI source.
What the HDMI conversion is doing is line doubling the 60i signal to make it look like it is progressive.
Change your settings to be 1080 29.97i 10bit
gary adcock
Studio37
HD & Film Consultation
Post and Production Workflows
Inside look at the IoHD -
The Gefen is outputting Dual Link HDSDI with output setting of 1080p 29.97 RGB. We are ingesting this via Dual Link HDSDI into the Kona. We have had some excellent support from AJA over the past couple of hours and have got it to work according to their settings suggested, but there is a bit of an issue with the quality of the footage ingested. We are now trying to overcome at what point in the chain is the weak link.
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[Simon Dinnigan] ” We are now trying to overcome at what point in the chain is the weak link.”
I’d bet money on the dual link conversion. Seriously, as a litmus, just capture to 8 or 10 bit uncompressed single link 1080i and see how it looks.
Jeremy
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We’ve had it coming out of the Gefen at 1080p 8bit and it looks fine, but would really like to see what this system can really do. If you have all this kit and don’t put it through it’s paces to find out it’s real capabilities, it’s like owning a Ferrari and putting a limiter on the engine.
I suppose the cut and thrust of this is that we have been given a brief to deliver 1080p 4:4:4 quicktime movies of this footage and that’s what we are trying to do. I know that it will look absolutely fine in 4:2:2 but that is not the challenge we have been set.
If there is a weak link, I must agree that it will probably be the Gefen box. I will be investigating in more detail tomorrow and will hopefully get you some results.
One last thing: We are running an EasyRaid (12x 500gig drives) Raid 5, capable of over 300MB second (supposedly), and the footage we have digitized in 4:4:4 is coming in at 237.5MB second. It has 1 controller, so only 1 Fibre channel cable connected to 4gig Apple FC card. Can we simply add another EasyRaid connected to the other FC port on the HBC and then stripe both Raids together in Disk Utility? Or do we need to use a FC switch?
BTW. Many thanks to everyone for their brilliant support and advice.
Simon
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