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  1. Member
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    Seeking capture device performance and quality measurement software that should have
    features as described in this document:

    http://www.videoq.com/Downloads/VideoQ_VQM%20Manual_En.pdf

    Has anyone had the opportunity to use that software?

    I would also like to find a usable software vectorscope; a trial version of a program that
    seems promising is here, but the author's URL is no longer valid and obtaining an
    activation code may be a problem:

    ftp://ftp.sunet.se/pub/simtelnet/win95/mmedia/vscope10.zip

    My intent is to compare measured performance of uncompressed Bt848 captures against
    uncompressed captures from professional grade cards.

    Thanks
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  2. Video Restorer lordsmurf's Avatar
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    edDV does this with something already built into an NLE. Vegas, maybe? After Effects? I forget. PM him or search his old posts.
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  3. Member edDV's Avatar
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    I'll take a look at this later this evening. Vegas has the basic monitors that seem to match external WFM/Vectorscopes well enough for setting edit levels. I would challenge using a DVD player as a test signal generator. In my experience DVD players are poorly calibrated.

    Another to look at is DV Rack.
    http://library.creativecow.net/articles/kolb_tim/hdv_dv_rack.php

    Vegas WFM/Vector Scope.
    Recommends: Kiva.org - Loans that change lives.
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  4. Member
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    [quote="edDV"]I'll take a look at this later this evening. Vegas has the basic monitors that seem to match external WFM/Vectorscopes well enough for setting edit levels. I would challenge using a DVD player as a test signal generator. In my experience DVD players are poorly calibrated.

    Thanks for the references.

    The trial period of 'vscope' is 30 days and there is no limitation on function during trial. It seems to be well
    constructed and the displays are canonical. I just wonder about registration. My Cinemaster hardware
    DVD decoder card provides 75% SMPTE bars for calibration, but I am interested in other software test
    signal generator solutions too.

    Michael
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  5. Member edDV's Avatar
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    Can you be more specific in your test methodology?

    A vectorscope only measures chroma saturation and phase. Waveform monitors measure most other video parameters.
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  6. Always Watching guns1inger's Avatar
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    There is also a vectorscope and waveform tool for virtualdub. It installs and is accessed as a filter. Turn it on and you see it's output in the preview window. Turn it off and you see your video instead. It is called colortools.
    Read my blog here.
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  7. Member
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    Originally Posted by edDV
    Can you be more specific in your test methodology?

    A vectorscope only measures chroma saturation and phase. Waveform monitors measure most other video parameters.
    Take a look at the PDF for the VQM product that I included in my original post -- I am interested
    in dynamic range, S/N, linearity, etc. I have not found many references online to test and measurement
    on capture cards, and the VideoQ website mentions partnerships with the major chip and card
    vendors so maybe they are the only game in town. As for 'vscope', the package includes both
    vectorscope and waveform monitors (time domain).

    Michael
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  8. Member
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    Originally Posted by guns1inger
    There is also a vectorscope and waveform tool for virtualdub. It installs and is accessed as a filter. Turn it on and you see it's output in the preview window. Turn it off and you see your video instead. It is called colortools.
    Thanks, I grabbed it and it is a cute tool, however it doesn't have line select and doesn't display during capture
    (to adjust live sources), but it costs nothing ;) I appreciate it however for calibrating from captured data.

    Michael
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  9. Member edDV's Avatar
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    This page from the VQM Powerpoint presentation shows their test configuration for tuner+A/D cards. It requires a calibrated TSG that will accept their test slide and output as calibrated RF, composite and S-Video. Then their automated measurement software creates test reports. Calibration of the TSG is an issue and will probably require an external WFM/Vectorscope.



    You could make many of the measurements from the Vegas monitors but they, like VirtualDub only work for capture file playback, not for live capture.

    I just cut this pattern out of the Powerpoint presentation for illustration.


    If you want instructions on video measurements, download the Tektronix guides that I listed in this thread.
    https://forum.videohelp.com/topic269943.html
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  10. Member
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    Here are some images of 'vscope' displays of live full height (and full saturation) bars
    (BTW, how can one post images to this forum's site's servers?):

    Vectorscope -- mouse cursor (not shown) allows targeted readout of anywhere in the
    frame/field, indicated by the yellow circle on the scope display (works in vector and
    waveform modes); green horiz line and slider position denote selected line (numeric
    in scope display):


    Waveform -- low pass filtered:


    Waveform -- flat:


    Waveform -- chroma:


    Over the years, a few other folks have posted to video web forums about trying to
    register 'vscope' with no luck -- the successor company, 'digilava' fails to reply
    to inquiries even though their awful, flash-laden site still advertises the product.
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  11. Originally Posted by cybertheque
    Originally Posted by guns1inger
    There is also a vectorscope and waveform tool for virtualdub. It installs and is accessed as a filter. Turn it on and you see it's output in the preview window. Turn it off and you see your video instead. It is called colortools.
    Thanks, I grabbed it and it is a cute tool, however it doesn't have line select...
    Use the crop tool?

    There's also the VideoScope filter for AviSynth.

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  12. Member edDV's Avatar
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    For Test Signal generation I suggest you rent a Leader or Tektronix test signal generator.

    For example, the Leader LT-416 has RF, composite, S-Video and analog component outputs for each test signal.

    There are also models with digital SDI output.


    http://www.leaderusa.com/web/products/video_generator/lt416.htm
    http://www.fotronic.com/leader/pdf/lt416.pdf
    Recommends: Kiva.org - Loans that change lives.
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  13. Originally Posted by guns1inger
    There is also a vectorscope and waveform tool for virtualdub. It installs and is accessed as a filter. Turn it on and you see it's output in the preview window. Turn it off and you see your video instead. It is called colortools.
    Do you know where i can download this filter? I can't find anything on the net
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  14. Originally Posted by themaster1
    Originally Posted by guns1inger
    There is also a vectorscope and waveform tool for virtualdub. It installs and is accessed as a filter. Turn it on and you see it's output in the preview window. Turn it off and you see your video instead. It is called colortools.
    Do you know where i can download this filter? I can't find anything on the net
    http://forum.doom9.org/showthread.php?s=&threadid=72634&highlight=vectorscope

    links to:

    http://trevlac.us/colorCorrection/clrtools.vdf
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  15. Originally Posted by jagabo
    Originally Posted by themaster1
    Originally Posted by guns1inger
    There is also a vectorscope and waveform tool for virtualdub. It installs and is accessed as a filter. Turn it on and you see it's output in the preview window. Turn it off and you see your video instead. It is called colortools.
    Do you know where i can download this filter? I can't find anything on the net
    http://forum.doom9.org/showthread.php?s=&threadid=72634&highlight=vectorscope

    links to:

    http://trevlac.us/colorCorrection/clrtools.vdf
    thanks a lot (and the manual that goes with it to interpret the results the way we're supposed to....where?)
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  16. Member
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    Here is yet another software waveform monitor/vectorscope program that has
    the kitchen sink thrown in (70MB zipped download); I'd like to know how well
    or not it works for other folks. I get 'error 80004003: cannot add Vidscope to
    filtergraph' when trying to open either an analog capture source OR just an
    AVI file:

    http://www.vidscope-vx.com/register.htm

    This one is from Hamlet UK and is advertised as meeting various broadcast
    specs.

    Michael
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