If You Record From the Hard Drive to DVD in SP Mode Do You Loose Quality?

Discussion in 'Blu-ray & DVD Players & Recorders' started by Fortesque, Dec 29, 2006.

  1. Fortesque

    Fortesque
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    As title really. Just want to know whether, being a digital signal, any quality at all is lost in transferring from HD onto DVD when using the highest resolution?
     
  2. alan sh

    alan sh
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    Not that I have noticed
     
  3. Gavtech

    Gavtech
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    The answer is - Yes you do.

    The crucial point is whether or not you re-encode... and if you transfer to DVD at anything other than high speed , you are re-encoding.

    High speed copying is the only lossless form of transfer.
     
  4. Fortesque

    Fortesque
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    Sorry for being green, but can you explain what re-encoding and high-speed copying are?........in relatioon to a Panasonic EX-75.
     
  5. aekostas

    aekostas
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    Every time you write something on the DVDR (HDD/Disc) from an external source or the tuner you are encoding. If you encode an already encoded input (eg copying from HDD to Disc, aka "dubbing") you are re-encoding :)

    You can avoid re-encoding if you set the "High Speed" flag on the DVDR *before* encoding for the first time and then dub in high speed. That's a lossless copy.

    Your manual is your friend ;)

    HTH.
     
  6. PhilipL

    PhilipL
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    Hi

    Encoding is another way of saying lossy compression.

    Most things digital these days use lossy compression, this means when you come to playback (decode) you haven't got everything that was there before you started.

    When you re-encode, this means decoding then encoding again, but because you never get back the original quality when you decode, and lose stuff when you encode (lossy compression), you lose even more.

    Regards

    Phil
     

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