DVD/Blu-Ray captions/subtitles were saved and displayed as bitmaps. I can't think of any recent technology that uses bitmaps for captions/subtitles. On Fri, Jul 16, 2021 at 6:11 AM Joshue O'Connor <joconnor@w3.org> wrote: > > > Larry Goldberg <larryg@verizonmedia.com> > Friday 16 July 2021 03:27 > I'll add one basic (and obvious) fact: > Most captions are transmitted in the form of data which represent the > characters and which include metadata that gives instructions to local > hardware as to how to render the data as displayed text. > As the characters themselves are rendered locally, bandwidth issues are > not relevant to resolution of the text itself. For TV and streaming, the > actual fonts, characters, resolution etc. are entirely dependent on the > local character generator built into the hardware, unless the text itself > is sent as bitmapped video. > > Thanks Larry - that is a sensible point. I guess we are looking for any > potential gotchas that may relate to the WebXR Layers API. > > Can you expand on contexts where text may be sent as bitmapped video? That > sounds resolution dependent. > > Thanks > > Josh > > > -- > Emerging Web Technology Specialist/Accessibility (WAI/W3C) >
Received on Friday, 16 July 2021 16:23:53 UTC