Resolution and Bit Rates

Discussion in 'Blu-ray & DVD Players & Recorders' started by jda, Jan 16, 2004.

  1. jda

    jda
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    I'm having problems getting files into TmpDVD author from the JVC recorder and I have discovered the following;

    In VR mode (RAM or -RW)

    Xp/FR60-FR150 gives Res=720x576 and rate 5M-10Mbps

    FR155-190 gives Res=544x576

    FR195-FR240/LP gives res=480x576

    FR245-FR300 gives res=352x576

    FR300-FR360/EP gives res=352x288

    Under Video mode on -RW the resolution stays at 720x576 up to FR150 (2.5 hours)

    It then drops to 352x576 up until FR300 (5hrs) after which it drops to 352x288


    The problem is that 480x576 can be read by TmpDVD but it can't write or build a DVD since it's not a standard DVD format.

    Where 544x576 can't even be read.

    They are reconised formats, I think for SVCD and LaserDisc but a bit late for stuff I've already done.

    Any idea on how to get around this.

    Would changing the header to 720x576 corrupt anything or just wouldn't work (Just guessing at the moment)

    If so any tools to do this??

    Otherwise the only way to edit/build DVD's is to record at 720x576 and then re-encode at a lower bit rate.

    720x576 is called D1 so is
    544x576 = 3/4 D1
    480x576 = 2/3 D1
    and 352x 576 is 1/2 D1

    I suppose dropping the resolution would mean the bit rate could be higher???

    I guess Panasonics don't do this as I haven't seen any messages about this before!


    Jim
     
  2. frothi

    frothi
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    No, dropping the resolution gives you a lower bit rate but increases the recording time available.
     

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