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MediaPortal 2
Plugin Development
Discussion: Find and Download Subtitles
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<blockquote data-quote="mm1352000" data-source="post: 1135535" data-attributes="member: 82144"><p>Hmmm, from the context it makes sense.</p><p></p><p>Even if it's easy to implement GetSubtitleStreamType(), GetSubtitleStreamCount(), GetCurrentSubtitleStream(), GetSubtitleStreamLanguage(), and SetSubtitleResetCallback() for teletext subtitles [by parsing PMT DVB teletext descriptor]... what use is it... because it doesn't seem meaningful to implement SetSubtitleStream() unless we also implement a filter for rendering the teletext subtitles... and is that possible???</p><p></p><p>To be clear...</p><p>In MP1, DVB subtitle decoding and rendering is handled in the graph (DVB sub filter). SetSubtitleStream() simply selects the PID which is passed to the DVB subs filter. However, teletext subtitle [and page] decoding and overlay is handled in the player. SetSubtitleStream() <em>could</em> select which teletext PID to pass back to the player (most or all channels have 0 or 1 teletext stream, so I don't understand the point)...??? ...but where will the teletext be decoded for rendering?</p><p></p><p></p><p>Surely that comment references DVB subtitles (ie. why not use IAMStreamSelect instead of ISubtitleStream), because TsReader is [currently] not responsible for selection of teletext subtitles.</p><p></p><p></p><p>I think it would help to define what you mean by "handle". If you want to use IAMStreamSelect or ISubtitleStream with teletext, somewhere the teletext still has to be decoded.</p></blockquote><p></p>
[QUOTE="mm1352000, post: 1135535, member: 82144"] Hmmm, from the context it makes sense. Even if it's easy to implement GetSubtitleStreamType(), GetSubtitleStreamCount(), GetCurrentSubtitleStream(), GetSubtitleStreamLanguage(), and SetSubtitleResetCallback() for teletext subtitles [by parsing PMT DVB teletext descriptor]... what use is it... because it doesn't seem meaningful to implement SetSubtitleStream() unless we also implement a filter for rendering the teletext subtitles... and is that possible??? To be clear... In MP1, DVB subtitle decoding and rendering is handled in the graph (DVB sub filter). SetSubtitleStream() simply selects the PID which is passed to the DVB subs filter. However, teletext subtitle [and page] decoding and overlay is handled in the player. SetSubtitleStream() [I]could[/I] select which teletext PID to pass back to the player (most or all channels have 0 or 1 teletext stream, so I don't understand the point)...??? ...but where will the teletext be decoded for rendering? Surely that comment references DVB subtitles (ie. why not use IAMStreamSelect instead of ISubtitleStream), because TsReader is [currently] not responsible for selection of teletext subtitles. I think it would help to define what you mean by "handle". If you want to use IAMStreamSelect or ISubtitleStream with teletext, somewhere the teletext still has to be decoded. [/QUOTE]
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Discussion: Find and Download Subtitles
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