Tethered Video

Joenail

Joenail

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Joe
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Hello!

I'm trying to shoot a 7-ish hour long video with either a 5dIII or a 7d, and am wondering if there is any special way to do so. I'm thinking I can have it tethered to a laptop on live view and just let it sit there, with the computer recording. I can't think of any other way to get past the time limits on the cameras. Has anybody done anything like this before? If so, It'd be wonderful if you could help me out. :runaway:

Thanks a lot,

Joe.
 
With the 5DIII and D800 you can record uncompressed video over HDMI to an external recorder. You need to remove all CF or SD cards in order to do so though, or it limits the output to 720P

No idea if the 7D can do this.

Not sure how you would record it direct to a laptop though, as film makers tend to use specialist recording equipment for the output.
 
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A 7 hour video? Seriously?

I can't think of any obvious way to do this - the time limits are put there basically to do with either tax or physical media limits.

A D800 could do it with an Atomos Ninja though you'd need to power the camera. Don't know Canons well enough to know if that's a goer.

Maybe as on this forum http://forum.timescapes.org/phpBB3/index.php If anybody knows of a homebrew solution then they will be on there.
 
I would suspect you are going to get serious sensor overheating issues with that length of time. A 7hour video as one continuous shot would pobably be immensley boring, most edits are around 2 mins absolute tops before cutting to a different view or angle.
 
Oh it'll be cut down fairly short, to maybe twenty minutes. I just need the security of having it running constantly as I can't tell when something will be happening. A couple of cameras in different places too, so it might not be that boring! I can't get use of a mk3 or D800 at the moment, but can get a couple of mk2s and/or 7ds.

Ken's right, the sensor overheating will definitely stop me being able to record continuously for 7 hours. So what I'm thinking I can do is: I can have a couple of remote triggers and have it ready to record when I need to, and use some sort of tethering software to record directly to the computer. Would this be possible?

If not, is it at least possible to bypass the CF card and save directly to a computer or external hard drive? Anything that means I don't have to repeatedly move all the files from my only one CF card to the computer?

I realise this is really tricky and a bit impossible, but I'm determined to get it done! Argh!

Thanks for the advice folks :)
 
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