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Thread: Confusing Jargon

  1. #1
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    Default Confusing Jargon

    From a popular UK PC magazine:

    "Each frame of TV may only have a fairly minimal 720x576 resolution, but with 25 frames every second the throughput required would be 20MB/s without compression".

    Reading further...

    "...the DV format has a standard data rate of 25MB/s, which equates to around 5:1 compression".

    Can someone explain this to me? I assume they've confused Megabytes with Megabits?

  2. #2
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    To answer my question, they should have said "the DV format has a standard bitrate of 25Mbps (or 3.6MB/s)

  3. Default

    would be good if someone can explain the data rates of

    DV
    DIgital TV
    High Def
    DVD

    just for the record
    Live from Norwich !

    Sony PC1000E ( Stopped working after 13months)
    Sony HDR-HC3 4Mega Pixels High Def Mini DV Broke
    Canon HF 10 - Broke
    iPhone4 Sport
    Waiting for the Sony HDR-GW55VE

    Avid Studio, + Pinnacle Studio14, Win7 64bit 12 GIG memory, Nvidia GTX590, twin 3D display, 2Terrabyte HD

  4. #4
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    The bitrate of DV and HDV are exactly the same at 25Mbit/s. Why the same? Well HDV uses higher compression

  5. #5
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    Default

    Oh and the DVD standard sets the maximum video bitrate of 8Mbit/s.

  6. Default

    to be honest i dont like the word " Compression"

    something gets lost and something suffers. :(

    Watching a film on Sky Digital the other night, poor disgital blocking, the compression was atchieved by If the pixel does not move theres not need to re draw it, when you get lots of dark in one area, this looks awful.

    Watching The Dukes of Hazard in old anolouge last night on a 8 foot screen, the picture looked active and not just when Daisy was about either.
    Live from Norwich !

    Sony PC1000E ( Stopped working after 13months)
    Sony HDR-HC3 4Mega Pixels High Def Mini DV Broke
    Canon HF 10 - Broke
    iPhone4 Sport
    Waiting for the Sony HDR-GW55VE

    Avid Studio, + Pinnacle Studio14, Win7 64bit 12 GIG memory, Nvidia GTX590, twin 3D display, 2Terrabyte HD

  7. #7
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    A good compression algorithm and the right settings should mean the viewer sees little or no difference in quality...

Similar Threads

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    By jeffro in forum General video editing software help and advice
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