disk Space needed for Sony HDV vs. Sony DV shot on an HDR-FX1 or HDR-HC3

Discussion in 'Professional Video Production' started by drelliot, Aug 20, 2006.

  1. drelliot

    drelliot Guest

    How much drive space does one minute of HDV captured from a sony hdr
    fx1 or a sony hdr hc3 need?

    Also, How much drive space does one minute of DV captured from a sony
    hdr fx1 or a sony hdr hc3 need?

    What' the factor between HD & HDV?
     
    drelliot, Aug 20, 2006
    #1
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  2. drelliot

    Frank Guest

    On 19 Aug 2006 20:38:54 -0700, in 'rec.video.desktop',
    HDR-FX1 or HDR-HC3>,

    DV and 1080i HDV, over FireWire, from any make or model of camcorder,
    has the same approximately 25 Mbps (mega bits per second) data rate,
    which comes out to about 13 GB (giga bytes) per hour of storage space.
     
    Frank, Aug 20, 2006
    #2
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  3. drelliot

    L.P.LePage Guest

    \
    Be careful - - the NEW Sony hdv recorders only capture at 15Mbps giving
    lower
    disk usage AND lower quality.[ the HD and CD recording media devices]
     
    L.P.LePage, Aug 21, 2006
    #3
  4. drelliot

    Frank Guest

    disk Space needed for Sony HDV vs. Sony DV shot on an
    HDR-FX1 or HDR-HC3>,

    The Sony products to which you refer, the HDR-SR1 and the HDR-UX1, are
    AVCHD-format camcorders, *not* HDV-format camcorders (the subject of
    the thread was HDV, not AVCHD).

    All HDV products, whether 720p (19.7 Mbps) or 1080i (25 Mbps), use
    MPEG-2 [email protected] while the two Sony AVCHD camcorders just mentioned use
    MPEG-4 Part 10 H.264 AVC. All Sony HDV and AVCHD products record
    1080i; none record 720p.

    The HDR-SR1 records to a hard disk drive at a maximum data rate of 15
    Mbps while the HDR-UX1 records to Mini-DVD discs at a maximum data
    rate of 12 Mbps. Neither of these products record to CD media.
     
    Frank, Aug 21, 2006
    #4
  5. drelliot

    Smarty Guest

    2 brief points I thought I could add...


    First, the 13 GB per hour HDV content is already compressed in MPEG2 and
    cannot be further compressed without comprising its' quality, whereas the 13
    GB per hour DV content is only lightly compressed and can undergo conversion
    to MPEG2 (or other formats) with the resulting file occupying around 3 to 4
    GB per hour.

    Second, the new, lower quality Sony HD camcorders are not, strictly
    speaking, HDV format. The HDV format camcorders are 25 Mbit/sec devices,
    whereas the latest "AVCHD" format consumer camcorders are 15 Mbit/sec.

    Smarty



     
    Smarty, Aug 22, 2006
    #5
  6. Yes and no. If you make a DVD out of your HDV-material, you resize it to
    SD-format, which can be easily compressed to MPEG2 for DVD.

    -m-
    --
     
    Martin Heffels, Aug 22, 2006
    #6
  7. drelliot

    Smarty Guest

    Well, of course you can convert HDV to a lesser format such as standard def
    DVD and thus make it smaller. Similarly, you can also take a DVD compatible
    MPEG2 file made from DV, convert it to play on a cell phone, iPod, or Sony
    Play Station, and make it one quarter or one tenth the size.

    The point of my original reply was that the apparently identical capture
    rates of 25 MBit/sec between HDV and SD video is a deceptive comparison
    unless one takes into consideration the fact that one is already in a highly
    compressed format (MPEG2) whereas the other (DV) is not. The fact that
    further compression and down-sampling could be applied to either really
    confuses the point IMHO.

    Smarty
     
    Smarty, Aug 22, 2006
    #7
  8. drelliot

    L.P.LePage Guest

    Absolutely right - - I meant DVD and not CD- -
    I only wanted to let others know that the newer Sony products mioght be
    lower quality devices


     
    L.P.LePage, Aug 24, 2006
    #8
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