Gopro and nanoflash at DVinfo.net
DV Info Net

Go Back   DV Info Net > Most Recent Additions... > Micro / POV Camera Systems

Micro / POV Camera Systems
Covering the GoPro HERO and other small Point-Of-View video cameras.

Reply
 
Thread Tools Search this Thread
Old June 17th, 2012, 10:44 AM   #1
Major Player
 
Join Date: Jan 2010
Location: Nieuw-Vossemeer, The Netherlands
Posts: 455
Gopro and nanoflash

I tried today to connect my nanoflash with the gopro by hdmi. And it worked. Is the output of the gopro over hdmi before or after compression? In other words, do I get a higher quality of footage when using an external recording device?
Cees van Kempen is offline   Reply With Quote
Old June 17th, 2012, 11:34 AM   #2
Major Player
 
Join Date: Feb 2003
Location: Pensacola Fl.
Posts: 627
Re: Gopro and nanoflash

I have tried to connect the GoPro to my NanoFlash but had no luck. Can you tell me how you have the gopro set that it will send a signal to the NanoFlash.
Ron Little is offline   Reply With Quote
Old June 17th, 2012, 12:17 PM   #3
Inner Circle
 
Join Date: Dec 2002
Location: Augusta Georgia
Posts: 5,421
Re: Gopro and nanoflash

Dear Ron,

Do you have the System|Source| set to HDMI?

Please feel freel to call me directly, I will try to assist.

My phone numbers are listed at the bottom of this link:

Support | Convergent Design

And yes, you may call me on the weekends and/or at night.
__________________
Dan Keaton
Augusta Georgia
Dan Keaton is offline   Reply With Quote
Old June 17th, 2012, 02:51 PM   #4
Major Player
 
Join Date: Jan 2010
Location: Nieuw-Vossemeer, The Netherlands
Posts: 455
Re: Gopro and nanoflash

Indeed, that's all it takes. Set the source to hdmi. No need to set anything in the gopro. No need to trigger the start button. Even no need to put a sd card in the gopro. Just run your nano. I hava a gopro hd 2 by the way, don't know about the first edition.

But still remains my question, is the output compressed or not. Any idea about that, Dan?
Cees van Kempen is offline   Reply With Quote
Old June 17th, 2012, 04:43 PM   #5
Inner Circle
 
Join Date: Dec 2002
Location: Augusta Georgia
Posts: 5,421
Re: Gopro and nanoflash

Dear Cees,

I can tell you that the data coming over HDMI is always uncompressed.

But, the above is a very technical answer, there is more to this.

In almost all cameras, the data goes from the sensor, through the processor on board the camera, out over HDMI without being compressed, as far as I know.

However, a very knowledgeable nanoFlash user, asked this question to a Sony support center, for the Sony V1U.

The answer she got was, in this camera, the V1U, the data is compressed in the camera, then uncompressed, before it goes out the HDMI.

While the person at the Sony support center insisted that this was the case, I find this doubtful.

The reason is that it takes a lot of electronics to compress the image, and a lot of electronics to uncompress it.

In our nanoFlash we use a very sophisticed Sony Codec module. This module can be configured for record or playback (compress or decompress), but not both at the same time.

Thus, it would take a dedicated compressor and dedicated separate electronics to decompress the signal.

I highly doubt that duplicate electronics would be present in the GoPro, so I feel that the signal you get out of the GoPro would be a "never compressed" signal.
__________________
Dan Keaton
Augusta Georgia
Dan Keaton is offline   Reply With Quote
Old June 17th, 2012, 09:59 PM   #6
Regular Crew
 
Join Date: Sep 2009
Location: Atlanta, GA
Posts: 26
Re: Gopro and nanoflash

could you tell the difference by eye? Did you do any side-by-side tests? What application do you have in mind, if it's worth the extra rigging?
Justin Kuhn is offline   Reply With Quote
Old June 18th, 2012, 01:31 AM   #7
Major Player
 
Join Date: Jan 2010
Location: Nieuw-Vossemeer, The Netherlands
Posts: 455
Re: Gopro and nanoflash

I did not do a side by side test. Just tried to connect both devices yesterday, succesfully. I have a very specific situation of filming a kestrel at the gutter of the house, where it would be possible to have the gopro outside, connected to the mains and to a nanoflash inside and being able to start recording any time of the day. And probably have a better image as well.
Cees van Kempen is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK


DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Most Recent Additions... > Micro / POV Camera Systems

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



All times are GMT -6. The time now is 09:42 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network