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Accessibility/HTML5 captions: Difference between revisions
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Accessibility/HTML5 captions (view source)
Revision as of 23:20, 22 September 2009
, 22 September 2009→Specification of the itext element (First Version)
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The itext element allows authors to include a link to an external file that contains informative text about the video. The external resource is expected to consist of a sequence of time intervals with associated text and potentially layout, styling, and animation information for the text. The text is displayed as the parent audio or video element goes through its time interval, i.e. the parent's currentTime | The itext element allows authors to include a link to an external file that contains informative text about the video. The external resource is expected to consist of a sequence of time intervals with associated text and potentially layout, styling, and animation information for the text. The text is displayed as the parent audio or video element goes through its time interval, i.e. the parent's currentTime has reached the start time of the interval but has not yet reached the end time of the interval (a semi-open interval: [start,end) ). | ||
The category attribute describes what function the informative text represents and can be one of the following: | The category attribute describes what function the informative text represents and can be one of the following: | ||
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The src attribute gives the address of the external itext resource to use. The value of the attribute must be a valid URL identifying a text resource of the type given by the type attribute, if the attribute is present, or of the type "text/srt", if the attribute is absent. | The src attribute gives the address of the external itext resource to use. The value of the attribute must be a valid URL identifying a text resource of the type given by the type attribute, if the attribute is present, or of the type "text/srt", if the attribute is absent. | ||
NOTE: text/srt will need to be registered as a mime type (as well as a format | NOTE: text/srt will need to be registered as a mime type (as well as a format standardisation) | ||
The type attribute gives the format of the data, RFC 2046. If the attribute is present, its value must be a valid MIME type, optionally with parameters. The charset parameter must not be specified. (The default, which is used if the attribute is absent, is "text/srt".) [RFC2046] | The type attribute gives the format of the data, RFC 2046. If the attribute is present, its value must be a valid MIME type, optionally with parameters. The charset parameter must not be specified. (The default, which is used if the attribute is absent, is "text/srt".) [RFC2046] | ||