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Monitor & Transmitter to Save us Directors. (help!)


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#1 Kal Karman

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Posted 22 March 2008 - 12:41 PM

Hello, I'm a director and have a dream product in my mind. And I think the Steadicam world would be the closest to telling me if such a montir rig could be created. What i'm dreaming of is a monitor that:

1) size and weight of PSP (playstation portable)
2) wireless video reception of A & B Cameras (or at least A camera)
3) all battery powered. low wieght more important, I don't mind swapping batteries throughout the day.


Can you think of a rig that can be put together?


If you are by chance a manufacturer, the following added features would really be amazing:


4) with small cellphone like lens to take digital stills, and record brief videos. Also displaying lens size like any viewfinder for various formats.
5) automatic recording of takes, and multiple frame rate renders like Vantage's PSU (http://www.pagelocat...ocation/psu.htm)


I'm surprised something like this hasn't been developed yet for directors. Or maybe you know of something similar that's already out there?

Also, I'm just curious, has there's been any research in sending video signals through WIFI technologies? If so, then anyone with a laptop could monitor the shooting. That would be a killer ap.

Many thanks,

Kal.
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#2 Jeremy Hawkins

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Posted 23 March 2008 - 08:44 AM

I think I may be able to do what you ask.

My website is www.avwirelesstech.com. Send me an email at jeremy@avwirelesstech.com and I will call you to talk about the options.

As far as wifi, there are several products on the market that use wifi, but there are a couple of problems. First, wifi systems tend to have an unacceptable delay of usually .5 to 1.5 seconds (though the literature will claim .3). Second, they have problems in signal loss when one moves from one WAP (Wireless Access Point) to the next. There are ways around this, but they require the installation of a significant infrastructure before hand and are best suited to arena-type locations such as a sporting event. I have designed such a system myself but the demand has not been outweighed by the cost of development and therefore has not been implemented.

Contact me and I will go into further detail with you and review the specifics of the application you have in mind.

Jeremy Hawkins
President/CEO
AV Wireless Technologies
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#3 Charles Papert

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Posted 23 March 2008 - 09:54 AM

Karl:

Items one through three are pretty easy. Here's one example:

http://www.hpvdo.com...ucts/index.html

navigate to handheld monitors (through all of the flash silliness)

Item 4 is interesting, although the concept of a cellphone-type lens and one that displays focal length are mutually inclusive (yes, any director's finder has those engraved on the barrel, but a board-level lens obviously doesn't have a barrel...would you be happy if this thing had a good size lens sticking out of it? if so, a C-mount surveillance camera would probably do the trick).

Item 5 is doable on a basic level but the variable frame rate part is a bit tricky in a handheld obviously--the box you link to is the size of a tower computer! A boy can dream, however. I'm guessing you don't have a dedicated video assist operator on your shoots with a hard drive system who would be able to build those speed ramps for you...?
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#4 Andrew 'AJ' Johnson

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Posted 24 March 2008 - 07:35 AM

Hi All.

This is what I use...
http://www.chinavasi...lcd-sd-mmc-usb/

Its the size of one of those old little Casio mini TV's except this receives a 2.4ghz Video signal - works with the Transvideo Titan system and most of the cheaper transmitters too.

And also... wait for it...... you can RECORD the received signal onto a flash (SD) card which slots into the top of the unit! - records in MPEG4 format - avi files.

You can also playback the recorded videos and even MP3's to get through that extended downtime between shots.
Also has a composite video in and out for onboard recording.
The rechargeable battery is built into the unit, so you cant replace it on the fly... which is why ive got 5 of these little guys. One charge will last about 4 hours non stop.

They are great for giving to the Director to roam around set with. The best thing is it will fit in the top pocket of a shirt, no bulky batteries / wires hanging off it.

The other great thing about this little receiver, is it only costs US$130 each... thats right!

So weather or not you are keen on the rise and infiltration of cheap chinese products, let me tell you all that this unit is worth a look!

regards,
-AJ

Andrew 'AJ' Johnson
'AR' / Steadicam / Camera
Ph: +61(0) 414 620249
aj@ajrevolution.com
www.ajrevolution.com
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#5 Charles Papert

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Posted 24 March 2008 - 07:44 AM

Andrew:

I've seen this unit but wasn't able to find the recording specs on it (was thinking about it as an onboard recorder)--what is the max resolution/frame rate it records at? And do you have to go through a lot of steps between starting/stopping recording and playing back a clip? thanks
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#6 Andrew 'AJ' Johnson

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Posted 24 March 2008 - 07:59 AM

Andrew:

I've seen this unit but wasn't able to find the recording specs on it (was thinking about it as an onboard recorder)--what is the max resolution/frame rate it records at? And do you have to go through a lot of steps between starting/stopping recording and playing back a clip? thanks



Hi Charles,
Just having a look at some of the recorded files on my computer...

DivX 6.0, 640 x 480, Millions
Microsoft ADPCM, Stereo. 25fps

It is fairly compressed, but for viewing on the small screen its more than fine.. even viewing on a larger monitor is ok to check framing etc.

To start stop recording, it is really easy, one button to pause / continue once your recording. (makes new file each time)
One of the best gadgets i've ever bought. The other good thing is that when the director drops it in a puddle of water, and it gets fried, its not thousands of dollars that go down the drain...

-AJ
Andrew 'AJ' Johnson
'AR' / Steadicam / Camera
Ph: +61(0) 414 620249
aj@ajrevolution.com
www.ajrevolution.com
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#7 Lawrence Karman

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Posted 24 March 2008 - 09:30 AM

Nice Andrew, but where is the small cellphone like lens with calibrated 16/35/Anamorphic/2/3" HD lens markings? ;)


The Transvideo Titan transmits in 2.4ghz? Does this little recorder/monitor also receive any analog UHF or VHF channels?
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#8 Andrew 'AJ' Johnson

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Posted 25 March 2008 - 07:39 AM

Nice Andrew, but where is the small cellphone like lens with calibrated 16/35/Anamorphic/2/3" HD lens markings? ;)


The Transvideo Titan transmits in 2.4ghz? Does this little recorder/monitor also receive any analog UHF or VHF channels?


Naa, it just receives 2.4 gHz.
I think the same store has a TV receiver which would do VHF / UHF.
I know they also have a digital TV receiver version!

-AJ
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