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ROCKMORE
12-24-2009, 07:51 PM
How can I capture the HDMI output stream with something like the nanoFlash.

Can the signal be recorded in Full HD 1080 4:2:2?

How much data space does it need if recording Uncompresses HD per minute

visugeek
12-26-2009, 08:47 PM
Nanoflash would need an HDMI to SDI converter. Black Magic, makes them for about $500.

Here is a Black Magic capture test I did. It's 4:2:2, but not full frame 1920X1080.

jVEHlDjt0Co

The upres to 1920 is here:

http://www.youtube.com/watch?v=RUPc-nNNO5U&feature=channel (http://www.youtube.com/watch?v=RUPc-nNNO5U&feature=related)

The Camera recording is here:

http://www.youtube.com/watch?v=AksqslyNhh4&feature=related

I haven't tested it with a focus chart, I don't think the resolving power would be any better. But I'll check it out in the next day or two if you want.

V

phrige
12-30-2009, 11:22 AM
I'm looking for the ability to record 1080 or 720 even SD resolutions for extended periods of time, Since the Canon has the 4gb block on it.

http://www.nanoflash.net/nanoflash
Seems alright for SD purposes. I guess if you throw your laptop in a backpack and have enough cable to run to your computer you maybe able to get a decent load of video.

If anyone finds the holy grail Firmware update, allowing the Cannon 7d to split up its recording files while writing... creating unlimited write times, I would be much obliged. that will be the saving grace for me. Black Magic Card is great if you have a macpro or good desktop with you but for live event type stuff which is what im looking for something small and portable is optimal. NanoFlash is great though pricey. Yet if it makes at least 1 camera run Full HD for unlimted time it would be worthwhile.

Pete

oh yea and this maybe the other piece of gear to make HD SDI > HDMI capable, http://www.bhphotovideo.com/bnh/controller/home?O=cart_accessories&A=details&Q=&sku=478471&is=REG since i dont believe this is just a cable plug shape issue, the information in the cables needs to be reformed for HDMI. (correct me if im wrong)

Barry_Green
12-30-2009, 06:28 PM
The 7D is the wrong camera for this. The longer you leave it on, the hotter it gets, and the video quality degrades. It's not just the internal limitation on recording that's going to give you hassles on "extended periods of time", it's the overheating issue too.

phrige
12-31-2009, 06:44 AM
Thats a good point too. I'm aware of the over heating issue, i guess its something that could pop up whether shooting a film stop and go all day. Less so than running constant. I wonder if they fixed any of the over heating issues on the 1d thats coming out soon.

I'm still ganna try my luck with it. I really like the footage I get with it, and if that means i end up getting another to switch back and forth between to cope with the over heating, so be it. I can buy a body decently cheap, And still cumulatively be saving some scratch over the Canon XH-G1s, which would have been what i bought instead. Hopefully my Niavity isnt getting the best of me but that was the closest camera I found in quality to the 7d. Smoothest HD with out any stutter or jitter in the motion.

visugeek
12-31-2009, 12:05 PM
I'm looking for the ability to record 1080 or 720 even SD resolutions for extended periods of time, Since the Canon has the 4gb block on it.

http://www.nanoflash.net/nanoflash
Seems alright for SD purposes. I guess if you throw your laptop in a backpack and have enough cable to run to your computer you maybe able to get a decent load of video.




I agree with Barry on the long take issue and heating.

If you are thinking about going the nanoflash route, you might want to rent it along with their HDMI-SDI converter and see how it works for you. They are available to rent at a few houses world wide:

http://www.convergent-design.com/order.asp?SectionID=21

Considering how fast technology is changing, you might find rental a better option since there may be a GH-2 or 7D Mark2, or Scarlet available in a year that may fix many of the current DSLR limitations.

phrige
01-01-2010, 09:54 AM
Thats a very good point as well. I'm really looking forward to the Red Scarlet, that I hope to be, like you said, the solution to all the current DSLR limitations.

I'll have to look into renting that gear too, its a pretty heafty price tag to just buy outright. Thanks for the link.

Its certainly going to be an exciting new year in film making with all these new advances.

Ian-T
01-01-2010, 10:13 AM
My thought is that the overheating issue is not limited to the 7D but on all CMOS based cameras (including the Red). Just because the 7D is programmed to shut off the camera at a particular heat threshold does not mean other CMOS cameras are not affected in the same way (I'm talking in regards to degraded images etc.). IMO

....mybe that feature can be bypassed with a firmware hack...

ROCKMORE
01-06-2010, 03:08 AM
My thought is that the overheating issue is not limited to the 7D but on all CMOS based cameras (including the Red). Just because the 7D is programmed to shut off the camera at a particular heat threshold does not mean other CMOS cameras are not affected in the same way (I'm talking in regards to degraded images etc.). IMO

....mybe that feature can be bypassed with a firmware hack...

True, all computer processors run hot, plus the 7D is sealed in a little box. I've burned up a few PCs running them into the ground 24-7. The warning, shutdown feature is probably the only thing that will save it in the end. A bypass hack may spell meltdown doom.