Latest post Mon, Mar 24 2008 3:29 PM by babalucas1. 4 replies.
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  • Wed, Mar 19 2008 10:44 PM

    color correction "legalization"

     Am working in the legalization on some programs, I have no problems bringing the signal within the limits:             

                                 composite     -20  -  110 IRE                                                                               

                                luminance      7.5  -   100 IRE

    But when i try to bring the signal to the values for the RGB limits 16-235 the quality of the video

    degrades to much, my question is, how important is bringing the signal within the RGB limits

    so that these programs get accepted .

    Thanks for any information.

    Am working with avid xpress dv 3.5

     

  • Wed, Mar 19 2008 11:21 PM In reply to

    • BLKDOG
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    Re: color correction "legalization"

    What are you using for signal calibration? A Waveform/Vectorscope I hope?

    Project Manager, Avid Professional Services - Americas [view my complete system specs]

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  • Sat, Mar 22 2008 11:22 PM In reply to

    Re: color correction "legalization"

    Am not using anything but the software Avid Xpress DV, no vectorscope or any other kind of hardware, if that's necesary, is there any other way to legalize the signal like they do it in Final cut with their own legalizer?

    Thanks for any info. 

  • Sun, Mar 23 2008 12:37 AM In reply to

    Re: color correction "legalization"

     It's going to be a guessing game to get chroma values within spec without a vectorscope, but if you have a decently calibrated NTSC client monitor and have to eyeball it, watch the red areas for the "threshold point" where the reds get too vivid and start bleeding and smearing, and back it down a bit from there.

    That being said, if your product has to pass Broadcast QC inspection, you should be using the same tools they will be to pass or fail you - the waveform monitor and vectorscope.

    Newscutter Nitris DX 9.5.3.5 * Media Composer 5.5.3.6 (At Home on PC running XP Pro) * Symphony 6.5.2.1 (At home on MacBook Pro3,1 running 10.7.2) * Interplay... [view my complete system specs]

    Larry Rubin

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  • Mon, Mar 24 2008 3:29 PM In reply to

    Re: color correction "legalization"

     Thanks for the information.

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