Connecting Camera to Large Screens for Live Events

1. mckielvideos
   Member

   

   I just finished recording a Dance Competition where they wanted to hook up my video camera (Sony HVR-Z5U) to the large projection screens set up by a professional company (TEL-AV).  They had a 16 channel switch-box and I tried two different outputs (composite and component).  The switch-box then went into their transmitter amplifier box (not sure of the right terms) because it had a long feed to the lcd projectors (100 ft).  My camera was set at 480i/1080i output.

   The resolution that came up on the large screens looked terrible (low resolution and white washed) while the same output on the monitor screens (HD-televisons placed around the conference centre) looked great.  Is there something i should have had between my video camera and the switchbox to make adjusting easier or better for projecting onto large venue screens?

   Posted 2 years ago #

2. XTR-91
   Member

   

   The analog composite (A/V) jack that they implemented into camcorders was designed for the display on Standard (320x240 resolution) TVs. The analog output on camcorders is probably equivalent to that. The design of a camcorder's (single-barrled and round) A/V jack is cheaply designed compared to the three-barreled composite output of DVD players - having a separate jack for left channel audio, right channel, and video that is more immune to loss and interference. The difference in quality on separate displays is most likely something to do with matching impedance or signal level. As I have said, the composite output of video camcorders is generally poor, until you start getting into the realm of pro camcorders. If your camcorder has Component, S-Video, or HDMI output, you'll have much better options than using the standard "Audio/Video" output.

    

   If it's a 100 foot cable, and you're outputting analog, I'd find a good BNC adapter that converts the output to a BNC cable and plugged into the port of the projector. If the projector doesn't have BNC, you should get a second adapter that converts the BNC cable back into something compatible (such as component or S-Vide). BNC handles long distances better than any other type of signal. If the output is digital (HDMI), there probably won't be much worry. For retaining maximum quality, BNC is still your best bet.

    

   And not to mention, just in case, BNC is the "Cable TV" type of signal and retains quality the best over long distances.

   Posted 2 years ago #

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