What do you need to record the video signal?  
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All Forums >> Radios, Batteries, Clubhouse and more >> Aerial Photography and Video >> What do you need to record the video signal?
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What do you need to record the video signal? - 1/22/2008 9:16:18 PM   
eles1


 

Posts: 9
Joined: 7/9/2007
From: Irving, TX, USA
Status: offline 		I have a wireless cam that I want to run on my plane... camera sends the signal to the receiver which has an analog output. THEN what? I have been told 100 times that I can record right into my VCR...? Is that like an 8track? I don't usually bring my home entertainment system to the flying field... Would seem easy enough to plug it into my camcorder except that the pass thru record feature is not easy to find. i.e. I haven’t found one for less than $500 or anyone that even knows what that is... I have also been told that I can get a Sony DV "walkman" ya for $1400...

So the question is how and on what to record the signal? Any ideas out there that are actually working out there?
       Post #: 1

RE: What do you need to record the video signal? - 1/22/2008 9:42:22 PM   
steve_molmer



Posts: 132
Joined: 7/10/2002
From: marietta, GA, USA
Status: offline 		Use a neuros mpeg4 video recorder 2

You can pick one up off of the web for about $100.00 and a 2 gig SD card is about $75.00.
The setup is plug and play. use your monitor to set up the OSD and away you go.

_____________________________

A man that says something is imposable should not bother the man doing it.

(in reply to eles1)
       Post #: 2

RE: What do you need to record the video signal? - 1/22/2008 9:47:05 PM   
eles1


 

Posts: 9
Joined: 7/9/2007
From: Irving, TX, USA
Status: offline 		With combat planes bounces into each other like we do I would hate to spend the day at the filed filming "just to the right" of the subject. Any ideas with a screen to make sure at the field the camera is still looking in the right spot?

Steve thanks for the note!!


(in reply to steve_molmer)
       Post #: 3

RE: What do you need to record the video signal? - 1/22/2008 10:10:40 PM   
wjglynn



Posts: 156
Joined: 7/25/2006
From: Topeka, KS, USA
Status: offline 		The VHS route is not that cumbersome. A cheap little 4-head VCR is like $30. Maybe cheaper at a pawn shop if they still sell them. Mine uses about 20watts @ 125vac. I use a 200watt inverter powered by a 12vdc field battery to run it. Even the cheap VCRs have pass through so I run my video goggles off the VCR output. A cheap VCR is smaller than a transmitter case. Don't get hung up on capturing the video directly into digital format. The signal coming down from the airplane is not HD so there is no quality penalty doing initial capture on VHS. You would have to convert it later and would have to have the means to dump into a computer. Steve's solution will do that in one felled swoop so I guess it will cost you a couple of hundred dollars no matter what. With VHS tapes it is a little harder to inadvertantly delete a master video image.

Good to see you on the board Steve!

(in reply to eles1)
       Post #: 4

RE: What do you need to record the video signal? - 1/22/2008 11:08:47 PM   
eles1


 

Posts: 9
Joined: 7/9/2007
From: Irving, TX, USA
Status: offline 		wjglynn, that is great point about the cost of the VCRs being low $$$. I may be onto something thanks to Steve's post. I did a search for MPEG4 recorders and got his product but also these little MPEG4 camcorders. Turns out more than one of them has analog in record capabilities!! Looks like for about $90 you can get one that will record the signal from the camera’s receiver...


http://www.aiptek.com/

(in reply to wjglynn)
       Post #: 5

RE: What do you need to record the video signal? - 2/4/2008 8:58:58 PM   
eles1


 

Posts: 9
Joined: 7/9/2007
From: Irving, TX, USA
Status: offline 		You know when I get all involved with these projects it just never stops... So here is where it stands and of course I have more questions I would like to throw out to the group.

Got the Aiptek HD camera at local big box retailer on sale for $119 and I was very surprised at the video quality both from the camera itself and from the wireless cam. All seemed to work so I mounted the WC on the wing and powered it with a 145mHa LiPo, all according to the game plan. Get to the field turn everything on, still good, start up the motor and launch the plane. About 4 laps later (remember this is a control line combat plane) and the video cut out. After several more attempts, no luck getting it to work for more than about a second or two. The worst part is that the first attempt got JUST enough video (I will post it tonight) to set the hook in me for good. I was really surprised that even at 95mph that you could easily make out the people/stuff on the ground. Don’t get me wrong we are talking about some crazy motion sickness if you watch it for to long but I think that some really cool screen grabs and slowmo stuff could come out of it.

I put the receiver in the center of the circle after I realized that there was an issue thinking that maybe the Doppler Effect was somehow at fault. When that didn’t have any effect on the situation I started looking at the receiver antenna which I soon found out was a FAKE! The 2 inch black plastic antenna which I presumed was a cover was completely empty. I opened the receiver’s case and found the 2” wire antenna on the opposite side. Does the hollow plastic antenna actually work as such?

So the question is given that the power output from the transmitter is going to stay the same will greatly extending the receiver antenna to a correct (for the frequency) length help?

If not can I boost the output of the TX on the camera?

(in reply to eles1)
       Post #: 6

RE: What do you need to record the video signal? - 2/5/2008 7:33:24 AM   
JMSTECH



Posts: 223
Joined: 1/14/2007
From: Duncan, BC, CANADA
Status: offline 		You can't beat the uncompressed format of a Sony or Canon miniDV camcorder that has analog input for recording. Most of the SD camcorder are great and compact but again the video playback will not be as sharp or color dept compared to a miniDV or a HD camcorder. Presently I'm recording directly into my laptop with a video capture box, I don't recommend it since it's a drag to lug that much equipment around to the field.

(in reply to eles1)
       Post #: 7

RE: What do you need to record the video signal? - 2/5/2008 6:47:52 PM   
eles1


 

Posts: 9
Joined: 7/9/2007
From: Irving, TX, USA
Status: offline
quote:

ORIGINAL: JMSTECH

You can't beat the uncompressed format of a Sony or Canon miniDV camcorder that has analog input for recording. Most of the SD camcorder are great and compact but again the video playback will not be as sharp or color dept compared to a miniDV or a HD camcorder. Presently I'm recording directly into my laptop with a video capture box, I don't recommend it since it's a drag to lug that much equipment around to the field.



JMS, the video quality is actually more than good enough from the hand held end, it's the mini wireless cam where the issue is in image quality. My biggest problem at this point seems to be the down link of the signal.


(in reply to JMSTECH)
       Post #: 8

RE: What do you need to record the video signal? - 2/7/2008 2:49:46 AM   
headhunter23


 

Posts: 814
Joined: 8/7/2007
From: Waterloo, ON, CANADA
Status: offline 		Hey steve, thanks for the advice. Hopefully the neuros will meet my needs. Looks like a nice little unit for size and money!

Ivan.

(in reply to eles1)
       Post #: 9

RE: What do you need to record the video signal? - 2/12/2008 6:35:04 PM   
eles1


 

Posts: 9
Joined: 7/9/2007
From: Irving, TX, USA
Status: offline 		Sorry for not posting the video yet but I am having no luck uploading it to YouTube... I sent it to my friend who does that sort of thing all the time and he is not having any luck either... it is a .mov file which should work... such as it is that is not the major hurdle.

I did a disappointing range check before heading to the field last weekend. I am only getting about 20-25 feet before the receiver looses the signal which causes the camera to switch to camera mode. Can this be corrected with a "better" receiver/antenna? In theory the plane will never be more than 120 feet away from the receiver but is going around 95mph-130mph depending on the wind. I wouldn’t think that I would need more than a 10mW transmitter for this but I am way under educated on this topic... Please keep in mind that I am flying a 500 gram plane so I am trying to keep the total weight to a min.

Do most/all recording devices switch modes when they loose input signal?

Am I missing something obvious here?




(in reply to headhunter23)
       Post #: 10

RE: What do you need to record the video signal? - 2/15/2008 5:09:19 AM   
MustangRay


 

Posts: 24
Joined: 10/20/2004
From: camino, CA, USA
Status: offline 		Iconnected mine to a 12 volt/110 volt portable t.v. with a vcr combo. It has about a 9 inch color monitor and records my flights!

(in reply to eles1)
       Post #: 11

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