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Posted by Veli-Pekka Ttil on 05/28/06 07:50
John Howells wrote:
> "Veli-Pekka Ttil" <vtatila@mail.student.oulu.fi> wrote
>> So, my question is this, do any players display subtitle files in a
>> textual form in a standard operating system control?
> Subtitles are encoded bitmaps, and do not exist on the DVD in a textual
> form
Ah, bad news but good to know. ISn't such a representation pretty
inefficient, by the way, compared to unicode text data? Well I guess that's
not an issue on DVD disks, now that I think of it, especially if it is a
black and white image i.e. a true bitmap.
I really lack the expertise to do this, but would domain specific optical
character recognition work here? Are the fonts standard or do they vary in
the sub-titles? I'm thinking that a specially tuned OCR program might be
able to turn the bitmaps into text. <EIther in real time if the machine can
handle it or as a one-shot process writing out the cached data on disk for
future reference.
OK now that the disk format is out of the way, howabout the subtitle files
with the sub extension? I do .realize these are most often used with ripped
DVDs but that's not what I'm thinking. I'd gladly use them with the original
disks just to get at the text itself more easily. I took a look at a couple
of files and they do seem like timestamped text. Any players which do the
rendering accessibly using the OS's GUI controls and font rendering engime?
--
With kind regards Veli-Pekka Ttil (vtatila@mail.student.oulu.fi)
Accessibility, game music, synthesizers and programming:
http://www.student.oulu.fi/~vtatila/
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