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Thread: There is no plug-in to do Harding test

  1. #1
    Join Date
    Jul 2012
    Location
    Warsaw
    Posts
    2

    Default There is no plug-in to do Harding test

    Hi,
    My footage, which I was preparing for MTV was rejected due to lack of positive HFPA Certificate (harding test).
    Can you imagine that I found no HArding test plug-ins? Maybe something omitted, but do you know a plugin that helps you in doing harding test? (adobe, FCP, AVID) ?
    Luckily I took the website Harding Test Online - of course, not for free, but in my opinion are truly cheap and it's fully automated web service.

    Best,

    Kuba

  2. #2

    Default

    For those of you not familiar with what the "Harding Test" is here is the Ofcom guidelines about it:

    In December 2003, Ofcom inherited the duties of the Independent Television Commission (ITC) in the UK. They have published a Guidance Note for Licensees on Flashing Images and Regular Patterns in Television and performed a consultation during 2005 in order to publish a new Broadcasting Code. Both Cambridge Research Systems and Professor Harding participated in the consultation.In the UK, most broadcasters contribute to running Clearcast, a specialist body responsible for the pre-transmission examination and clearance of television advertisements. Clearcast use the Harding FPA as part of their testing procedure.
    The UK OfCom Television Guidelines -- In Brief

    A potential harmful luminance flash is where: The opposing changes in luminance have at least 20 cd/m2 contrast, AND the darker image is below 160 cd/m2, AND there are more than 3 flashes per second, AND those flashes occupy more than 25% of the video screen.
    A potential harmful red flash is where: There are opposing changes to or from saturated red colour, AND there are more than 3 flashes per second, AND those flashes occupy more than 25% of screen.
    A potential harmful spatial pattern is where: Light-dark stripes occur with a change in luminance of at least 20 cd/m2, AND the dark stripes are darker than 160 cd/m2, AND more than 5 light/dark pairs of stripes occur in any orientation, AND the stripes are stationary for more than 0.5 seconds, AND the stripes occupy more than 40% of the video screen.
    OR where: Those stripes oscillate or reverse their phase rapidly, AND the stripes occupy more than 25% of the video screen.
    Slowly drifting patterns are exempt.
    An extended flash failure is where: There is significant flashing that may include either red or luminance flashing, where although the flashing may be within guidelines it persisits for more than 5 seconds.
    It should be noted that although a ‘cut off’ of 25% of the video screen area is set, while high contrast and high frequency flashing occupying 24% of the video screen may technically pass the guidelines the potential for provoking seizures is not much reduced. It is advised to avoid high risk sequences even if a pass occurs.

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