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MediaPortal 1
Development
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Subtitles and dxva
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<blockquote data-quote="sonix1977nl" data-source="post: 308176" data-attributes="member: 76936"><p>I have written a custom directshow source filter, which outputs an bitmap with alpha channel with the text "Hello world!" rendered in a subtitle kind of way. By connecting the decoder (MPCVideoDec with DXVA enabled) to pin 1 on the VMR9 filter and my custom filter on pin 2, I get that text rendered over the video. By both running with DXVA enabled and disabled and watching CPU usage, I can confirm that my method works in combination with DXVA enabled.</p><p></p><p>This could form the basic for a directshow filter that converts a subtitle stream into bitmaps with alpha channel with the subtitles rendered in those. That way we could have DXVA enabled and subtitles. Since it is a directshow filter, it could be used by many different players.</p></blockquote><p></p>
[QUOTE="sonix1977nl, post: 308176, member: 76936"] I have written a custom directshow source filter, which outputs an bitmap with alpha channel with the text "Hello world!" rendered in a subtitle kind of way. By connecting the decoder (MPCVideoDec with DXVA enabled) to pin 1 on the VMR9 filter and my custom filter on pin 2, I get that text rendered over the video. By both running with DXVA enabled and disabled and watching CPU usage, I can confirm that my method works in combination with DXVA enabled. This could form the basic for a directshow filter that converts a subtitle stream into bitmaps with alpha channel with the subtitles rendered in those. That way we could have DXVA enabled and subtitles. Since it is a directshow filter, it could be used by many different players. [/QUOTE]
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