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Applies whenever SMIL 1.0 player is available
This technique relates to:
The objective of this technique is to provide a way for people who are blind or otherwise have trouble seeing the video in audio-visual material to be able to access the material. With this technique a description of the video is provided via audio description that will fit into the gaps in the dialog in the audio-visual material.
<?xml version="1.0" encoding="UTF-8"?> <smil xmlns:qt="http://www.apple.com/quicktime/resources/smilextensions" xmlns="http://www.w3.org/TR/REC-smil" qt:time-slider="true"> <head> <layout> <root-layout background-color="black" height="266" width="320"/> <region id="videoregion" background-color="black" top="26" left="0" height="144" width="320"/> </layout> </head> <body> <par> <video dur="0:01:20.00" region="videoregion" src="salesdemo.mov" alt="Sales Demo"/> <audio dur="0:01:20.00" src="salesdemo_ad.mp3" alt="Sales Demo Audio Description"/> </par> </body> </smil>
<?xml version="1.0" encoding="UTF-8"?> <smil xmlns="http://www.w3.org/TR/REC-smil"> <head> <layout> <root-layout background-color="black" height="266" width="320"/> <region id="videoregion" background-color="black" top="26" left="0" height="144" width="320"/> </layout> </head> <body> <par> <video src="salesdemo.mov" region="videoregion" title="Sales Demo" alt="Sales Demo"/> <audio src="salesdemo_ad.mp3" title="audio description" alt="Sales Demo Audio Description"/> </par> </body> </smil>
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Find method for turning on audio description from content/player (unless it is always played by default)
Play file with audio description
Check whether audio description is played
#3 is true