video switching amps

Discussion in 'Projectors, Screens & Video Processors' started by paulpj, Mar 14, 2006.

  1. paulpj

    paulpj
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    what exactly are these and how can they benefit a hd ready plasma ,also do you need an upscaler if getting hd sky and vice versa?:)
     
  2. Chaucer

    Chaucer
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    I think you might be confusing two terms.

    A video switcher allows you to select between a number of inputs sending the selected signal to one output.

    A video switcher may have a distribution amplifier built in, so that the selected input is sent to two or more identical outputs.

    A pure distribution amplifier will have one input, and multiple outputs all of which are identical to each other and the input signal.

    A matrix switcher allows you to switch any input to any or all outputs.

    A scaler switcher, allows you to select any input of any format, and output to a resolution to match your display device.

    You might find this link useful: http://www.kramerelectronics.com/glossary/glossary1.asp
     
  3. Welwynnick

    Welwynnick
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    It's just convenience. When you change source, you only have to select it once - you don't need to select audio and video separately, or programme a macro in your remote to do it for you. That's all. Any form of video processing is likely to be of little value, as all HDMI DVD players and HD displays do much the same processing anyway. If the amp doesn't do the processing any better, then it's of no value at all.
    Absolutely not. The display will always do all the processing for you. Of course, it may not do it very well, which is why we have this particular forum. Separate dedicated scalers can improve the picture quality for any display and from any source, SD or HD, but it's very unlikely that an AV amp will do this for you.

    In general, mixing audio and video in one box is not a good idea. Think about it for a moment - why do upmaket universal disc players have a video defeat function where all video processing is turned off when playing CDs or SACDs, if not to make them sound better?

    BR, Nick
     

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