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<blockquote data-quote="misterd" data-source="post: 685073" data-attributes="member: 19503">Just to clarify some things. AFAIK all analog tuners can handle the CC subtitles. They all have a VBI output pin on their capture devices (or atleast they should have). Here a normal application can grab the VBI data and extract with Line21 decoder the CC subtitles. Also those capture devices normally provide an output pin which has the analog unencoded video signal. This video signal has normally no CC information included.I assume that WMC is using this VBI pin in a specific combination with their own stream buffer engine, which the current TvServer doesn't use. For more information I refer to the MSDN: <a href="http://msdn.microsoft.com/en-us/library/dd407354%28v=VS.85%29.aspx" target="_blank">Viewing Closed Captions (Windows)</a>So what does the TvServer do?The TvServer now uses this analog video signal and tries to encode it to a MPEG-2 Video stream or uses a direct output pin on the capture device. Unfortunately not all encoders support the possibility to combine the analog video signal with the CC information from the VBI output pin. Additionally you can't even detect it properly. That's why the TvServer currently doesn't do this.The patch Migue is referring to just analyses the MPEG-2 video stream and enables the Line 21 decoder from the video stream within the MPEG-2 video. So if the encoder doesn't have added the CC information they are not there and you are lost. So with the patch you can have luck and CC works for you or not. MisterD</blockquote>

[QUOTE="misterd, post: 685073, member: 19503"] Just to clarify some things. AFAIK all analog tuners can handle the CC subtitles. They all have a VBI output pin on their capture devices (or atleast they should have). Here a normal application can grab the VBI data and extract with Line21 decoder the CC subtitles. Also those capture devices normally provide an output pin which has the analog unencoded video signal. This video signal has normally no CC information included. I assume that WMC is using this VBI pin in a specific combination with their own stream buffer engine, which the current TvServer doesn't use. For more information I refer to the MSDN: [url=http://msdn.microsoft.com/en-us/library/dd407354%28v=VS.85%29.aspx]Viewing Closed Captions (Windows)[/url] So what does the TvServer do? The TvServer now uses this analog video signal and tries to encode it to a MPEG-2 Video stream or uses a direct output pin on the capture device. Unfortunately not all encoders support the possibility to combine the analog video signal with the CC information from the VBI output pin. Additionally you can't even detect it properly. That's why the TvServer currently doesn't do this. The patch Migue is referring to just analyses the MPEG-2 video stream and enables the Line 21 decoder from the video stream within the MPEG-2 video. So if the encoder doesn't have added the CC information they are not there and you are lost. So with the patch you can have luck and CC works for you or not. MisterD [/QUOTE]

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