[FFmpeg-devel] [PATCH 1/2] avcodec/libzvbi-teletextdec: add support for selecting subtitle pages only

[Jan Ekström]

On Wed, Jun 13, 2018 at 12:47 PM, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
> 2018-05-06 23:05 GMT+02:00, Marton Balint <cus at passwd.hu>:
>
>> +List of teletext page numbers to decode. Pages that do not match the
>> specified
>> +list are dropped. You may use the special @code{*} string to match all
>> pages,
>> +or @code{subtitle} to match all subtitle pages.
>
> Shouldn't this default to "subtitle"? The current default is useless iirc.
>
> Carl Eugen

I think one of the major problems is that IIRC currently the receiving
end has no idea for which page a subtitle was received for (be it
image or text).

Not only would it let the default be * (in case someone wants to
render teletext on the screen in general), but also there are channels
where a single teletext stream has at least two or three different
subtitle pages, and if the API client would be able to distinguish
between them without making multiple decoder instances I'd think
that'd be neat.

Best regards,
Jan