Quick Question about HDMI and DVI

Discussion in 'Home Theater Projects' started by Ken Burkstrum, Jul 23, 2006.

  1. Ken Burkstrum

    Ken Burkstrum Stunt Coordinator

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    I heard the HDMI and DVI inputs/outputs were the same and that an HDMI cord could plug into DVI, is that true?
     
  2. Stephen Tu

    Stephen Tu Screenwriter

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    They are supposed to be compatible, and in most cases an HDMI->DVI cable will work just fine, but they are not exactly the same:

    - HDMI supports audio, DVI does not
    - HDMI guarantees HDCP (copy protection decryption) support, DVI not guaranteed. Basically on some older front projectors/flat panels targeted at computer market, might be out of luck; check model specs for HDCP support. Should be OK on anything marketed as a TV rather than a computer display.
    - HDMI supports a YCrCb component mode, while DVI uses RGB; this can lead to less than optimal colorspace conversion as on the Toshiba HD-DVD model currently.
     
  3. James Edward

    James Edward Supporting Actor

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    No- they look completely different, and there needs to be an adapter if they are to be plugged into each other. The adapters seem to work well, but as Stephen alluded to, you'll need to run separate audio if the connection into the TV is DVI.
    PS- Don't lie awake nights if you can't use DVI or HDMI- component can look very good or better compared to a straight digital input, not to mention the 'handshake' issues that can arise from HDMI.
     
  4. Grant B

    Grant B Producer

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    I recently saw a DVD player that supports DVD Audio via the HDMI output and no analog output.
    Is there a way to get the audio from the HDMI with an adapter?
     
  5. JjSeVdT

    JjSeVdT Auditioning

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    The only way to seperate the audio from the HDMI would be to get a switch that could down convert to analog
     
  6. Grant B

    Grant B Producer

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    Thanks
    I didn't think so but you never know!
     

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