Wireless Connectivity

[Homersapien]

Hello all... My first post!

As a complete novice I was wondering if their is a means of sending the data from a camera directly to a computer over a network using for example 802.11g Wireless or anything else, and do so whilst the camera actually shoots.

Another alternative would be a small hardrive (which could store say a few GB) mounted to the camera and backed up to a wireless source automatically when filming is not happening.

And if not, does anyone know why not, perhaps there are certain limitations to being able to do this.

I just thought that with external harddrives that can be written to quickly and store masses of information being able to store data without worrying about changing cards etc would be quite convenient (Especially with the considerations of Red One camera in the future having a really fast stream to a storage would be great). You would also be able to use the information directly from the external harddrive for editing I'd guess.

[Drew599]

The bandwidth isn't there for something like that. Just use P2 cards. Believe me its way better than it sounds.

[VaricamLife]

First off, congrats on your first posting.

To move data at the size/rate being shot I think is too intensive for your standard wireless solutions out there. Even if you do try to rig something up yourself. If you wanted real wireless transmission of that kind of stuff I think you'd need a budget like the military or NASA or high end photography service...thus using satellite technology to do so. At least that's how I would see the situation being.

Also, reading these forums and seeing so many issues of corrupt media, losing footage, etc., as the venture into tapeless workflow begins, I'd really rather not try to throw wireless recording into the mix so soon. I think you'd be basically having to do a whole lot of praying that you didn't start losing footage (baring say using a military grade system, which I can't see as all to affordable).

Anyway, just my .02.

cheers.

[Homersapien]

Exactly how much does a camera such as the HVX record per second in mb then?

802.11g can be 108mbps over a network, I presume it'd need more than this then yes?

[Cynic821]

it CAN be 108mbps, but is more like 50mbps in normal op environments.

HVX is 100mbps a second

[Homersapien]

Thnx for the replys.

Is the HVX really 100mbps? so you would create 1gb of data in 10 seconds of shooting? and an 8gb P2 Card would fill up in 1.20mins?

Seems alot to me is all

[THoff]

In DVCProHD format, yes, the HVX tops out at 100Mbps.

But you've got Megabits and Megabytes mixed up. One minute of HVX video is about 1GB, give or take some depending on the frame rate and recording mode.

[mikkowilson]

Close, but you are mixing Bits (b) and Bytes (B) .

It's 100mbps = 12.5MBps
So that's a gig of data about every 80 secconds.

With overhead, a 8GB card holds just voer 8mins of 100mbps DVCPRO-HD footage.

And with overhead for wireless including error checking, you'd need around 125mbps sustained to transmit in real time.


EDIT: THoff beat me to it.

- Mikko