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<blockquote data-quote="Maephisto" data-source="post: 157375" data-attributes="member: 51044">Hi, I'm back with other questions. Reading the BDA Sample in DirectshowLib I managed to create an application that shows tv in a simple form. Now I need to put OSD (on screen display) on my video. I use VideoMixingRenderer9 and reading its features I've understood that it should be easy to add text or images on a video. On MSDN there is a sample using VMR9 and IVMRMixerBitmap9 methods like GetAlphaBitmapParameters and so on... but in DirectshowLib DxText sample it is shown how to do the same thing with SampleGrabber filter. Two different approaches to obtain a similar result. Now, my questions:1. can I use SimpleGrabber filter over a live video like TV?2. in the sample about IVMRMixerBitmap9 methods there are instructions like GetDC or CreateCompatibleDC (I believe they belong to GDI) and all the code is written in C++: how can I turn the code in C# language? Do I have to convert all the required interfaces? How can I know what interfaces are already implemented by DirectshowLib?Thx in advance</blockquote>

[QUOTE="Maephisto, post: 157375, member: 51044"] Hi, I'm back with other questions. Reading the BDA Sample in DirectshowLib I managed to create an application that shows tv in a simple form. Now I need to put OSD (on screen display) on my video. I use VideoMixingRenderer9 and reading its features I've understood that it should be easy to add text or images on a video. On MSDN there is a sample using VMR9 and IVMRMixerBitmap9 methods like GetAlphaBitmapParameters and so on... but in DirectshowLib DxText sample it is shown how to do the same thing with SampleGrabber filter. Two different approaches to obtain a similar result. Now, my questions: 1. can I use SimpleGrabber filter over a live video like TV? 2. in the sample about IVMRMixerBitmap9 methods there are instructions like GetDC or CreateCompatibleDC (I believe they belong to GDI) and all the code is written in C++: how can I turn the code in C# language? Do I have to convert all the required interfaces? How can I know what interfaces are already implemented by DirectshowLib? Thx in advance [/QUOTE]

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