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.
These are categorised by what features they demonstrate that is most interesting.
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
This example shows a case where animated positioning and angular change are highly recommended to achieve a desired style: http://www.youtube.com/watch?v=Qz2F-H7IHFM
Italics or other inline emphasis
Karaoke with color coded voice, where parts sung together have a unique color (source):
Important line feeds
This is from a mobile phone and needs particular contrast and visibility.
Colors are often used in closing comments to signify the author of the captions.
- CBC captioning manual requires:
- minor control over position
- word-level italics control
- frame-level timing
See http://www.dcmp.org/captioningkey/types_methods_styles.html and the pages following this one (click on the next topic at the bottom)
This is now at http://www.dcmp.org/captioningkey/text.html