Sending metadata to VAST ad servers

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    Metadata can be sent to ad servers in order to target ads more specifically to the currently played media. Screen9 currently supports sending category name and tags by using format specifiers in URLs for Smartclip VAST 2.0 and VAST 3.0 advertising formats. For Smartclip, this applies only to HTML5 ads since Flash embeds send metadata automatically.Flash based Videoplaza integration includes sending (only) tags to the ad server.

    Once Screen9 media player is about to request ads from an advertising server, the following specifiers in the URL are automatically replaced with the metadata of the currently playing (or to be played after the ad) media:

    %category Replaced with the category name of the current media.
    %categoriesmapping Replaced with a property on the category of the media, if any. Can be used for sending a specific string to the ad server if the media is in a category but one does not want to send the actual category name.
    %devicetype Type of the device that plays the video, one of "desktop", "tablet", "mobile".
    %tags Replaced with a comma separated tag list of the current media.
    %qtags Same as %tags but separating commas are URL-quoted (to become %2C instead).
    %adtags Similar to %tags but the tag list is expanded using numbered URL parameters, for instance if media had tags "interesting" and "people", %adtags would be replaced with adtag1=interesting&adtag2=people. In case video has no tags, the parameter is replaced with an empty adtag1=.
    %domain Replaced with the domain (with subdomains) that the player is embeded on. Will strip "http://" and "www."
    %udomain Same as %domain but with dots replaced with underscores.
    %random Ad URLs usually have other random specifiers which are understood by the relevant ad plugin and/or ad server, but if desired, Screen9 server can be used to generate and insert random numbers into URLs. Each %random specifier is replaced with an integer random number ranging from 1 to 999999999.
    %r A shorthand notation for %random for compatibility purposes. Deprecated for new configurations, please use %random instead.

    Please note that only ASCII alphanumerical characters are allowed for both category names and tags. Alphabetical and letter-like characters from other encodings are transliterated to their closest ASCII representation (i.e. Göteborg becomes Goteborg) whereas everything else is replaced with an underscore before sending metadata to the ad server.

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