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Bluecherry 8 port video capture card

 
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geosweiningen



登録日: 2013.10.31
記事: 26
所在地: Val Terbi, Switzerland

記事日時: Fri Jun 17, 2016 5:25 am    記事の件名: Bluecherry 8 port video capture card 引用付きで返信

Dear all

We are trying a new 8 port video capture card for our Watec Installations: http://store.bluecherry.net/product/tw-201-8-port-video-capture-card-240fps-realtime-recording-pcie-windows-64bit-support/

I’am not sure if it works as it should. I realise a very coarse-grained pixelated detection (the cyan pixels).



When I compare it to another Watec, connected by an ordinary USB2 Grabber, then I can see a much finer resolution of the detection pixel.



Everything other seems to be ok: The Image is clear, the resolution of the image looks good (720*576 for PAL). The software allows to switch between PAL and NTSC.
Only the very coarse-grained pixelated detection and the unproved assumption that it detects less meteor then the usb grabber makes me suspicious of this capture card.

Does anyone made similar experience or could explain this phenomena?

Thank you in advance for any suggestions.

Best Regards
Roger



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rando42



登録日: 2010.04.05
記事: 24

記事日時: Fri Jun 17, 2016 8:19 pm    記事の件名: 8 E/S cart 引用付きで返信

Hi !

I have a look to the specifications :

Max. Resolution 720×480 @30fps
Software compression

How could the cart reach 720x576 ??? and what mean " software compression "

these could be the problem
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geosweiningen



登録日: 2013.10.31
記事: 26
所在地: Val Terbi, Switzerland

記事日時: Sat Jun 18, 2016 1:52 am    記事の件名: 引用付きで返信

Hi, and thank you for your input.

We asked the guy from Bluecherry before we ordered the cards if they can handle PAL with 720 x 576 too and what software compressing means. He reassures us that PAL would be no problem. And effectively the card came with PAL driver too. He also told, that software compressing only means, that we are able to compress the stream with Lagarith etc. and that there is no compressing thru the card itself. But I am with you, it looks really like there is something with wrong NTSC/PAL although the video looks good and comes in PAL format… strange thing.

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rando42



登録日: 2010.04.05
記事: 24

記事日時: Sat Jun 18, 2016 2:41 am    記事の件名: 8 channels vidéo cart 引用付きで返信

Hi,

we are not so far each other I'm near Lyon.
One thing to try It,s to use with the same vidéo flux divided with a T cinch connector, one flux go the the 8 E/ cart in 640x480 and the other on a classic individual grabber preset at the same size/rateand compare the vidéo.
If the quality is the same, try to increase to 720x480 and 720x576 to be sure that the difference is coming from ths 8 channels cart itself

regards
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geosweiningen



登録日: 2013.10.31
記事: 26
所在地: Val Terbi, Switzerland

記事日時: Sun Jun 19, 2016 6:15 am    記事の件名: 引用付きで返信

Hi rando42

Thank you! I'll try to test it as you recommend. Have to get an T cinch connector next week.

In the meantime I switched back to my 6xUSB3 Grabber. This one runs stable.

Lyon: 400km. France meets Switzerland in an Japanese Forum that's really a global exchange Smile

Best Regards an have a nice weekend

Roger

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geosweiningen



登録日: 2013.10.31
記事: 26
所在地: Val Terbi, Switzerland

記事日時: Thu Aug 11, 2016 6:24 am    記事の件名: 引用付きで返信

Hi rando42

Your Idea about the T connector led to the solution.

The driver of the card could not support an interlaced signal, as it come in from the Watec. We have discussed this matter with the supplier and the manufacturer has meanwhile released a new driver which can handle the interlaced signal.

Now, the card is working really fine and stable. We use it at two stations without any problems so far.

So thank you very much for the bright idea and support.

Best Regards and CS for the Perseids
Roger

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