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Use cases for timed tracks rendered over video by the UA
This page contains examples of features where timed tracks are rendered over video by user agents natively.
Return to timed tracks home page.
Contents
Static Examples
These are categorised by what features they demonstrate that is most interesting.
Positioning
This example shows how multiple segments with overlapping times should be automatically placed so as to not overlap: http://www.youtube.com/watch?v=xG9KluukpJI#t=2m40
This example shows that we need line-based positioning: http://www.youtube.com/watch?v=bw5JBWdaUHI#t=0m12s
Ruby
Italics or other inline emphasis
Karaoke
Multiple voices
Karaoke with color coded voice, where parts sung together have a unique color (source):
Important line feeds
Plain text
.gif)
Background emphasis
This is from a mobile phone and needs particular contrast and visibility.
Multiple colors
Colors are often used in closing comments to signify the author of the captions.
Legal notices
Watermarks
Informative
Formal documentation for real-world captioning
- CBC captioning manual requires:
- minor control over position
- word-level italics control
- frame-level timing
