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-   -   Need Help! Trying something unusual (http://www.dvinfo.net/forum/canon-vixia-series-avchd-hdv-camcorders/466816-need-help-trying-something-unusual.html)

Emrys Roberts October 30th, 2009 01:45 PM

Need Help! Trying something unusual
 
Basically I am trying to use an HV40 as a webcam to do a live web broadcast through my companies main network. So far everything has worked but I'm experiencing some very strange field separation issues. When ever I pan it's incredibly apparent. Anyone got any ideas on how to fix this? Has anyone had the same issue before?

The camera is connected to the computer via fire-wire. The application we're using to broadcast is Microsoft Live Meeting. Any help would be greatly appreciated. :)

Roger Van Duyn October 30th, 2009 02:36 PM

It quite possibly is the "rolling shutter" phenomena from the cmos chip in the HV40. I have two HV30s, and pans just don't work well unless they are extremely, extremely slow. Otherwise, you can have a "rippling jello" effect. Do a search on rolling shutter on the forums. There are some demo clips illustrating the effect. For instance, if you pan while filming a rail fence, the fence rails become slanted, due to the way cmos chips work. Pans must be extremely slow and smooth with cmos cameras to not have problems from the rolling shutter.

Maybe some of the real experts can enlighten you more.

Stuart Robinson October 30th, 2009 03:22 PM

If the camera is set to 60i then there's a chance the playback software isn't deinterlacing it, either correctly or at all. Webcam software, for example, more often than not expects progressive footage.

You may want to try setting the camera to 30p and see if that helps.

Emrys Roberts October 30th, 2009 03:46 PM

I thought it could possibly be the CMOS censor as well, so I used the back-up GL2 and it had the same phenomenon. It's really strange. It almost looks like the computer is only displaying one field. :(

Emrys Roberts October 30th, 2009 03:56 PM

Quote:

Originally Posted by Stuart Robinson (Post 1440354)
If the camera is set to 60i then there's a chance the playback software isn't deinterlacing it, either correctly or at all. Webcam software, for example, more often than not expects progressive footage.

You may want to try setting the camera to 30p and see if that helps.

Oh good idea. I try that next time and see if that helps. Thanks :)


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