Streaming file data to WMP evanandr 5/14/2007 3:45:01 PM I'm new to WMP development and I'm trying to figure out how I can send raw data (in this case, MPEG-2 TS video) to WMP for streaming playback. The MPEG-2 data is stored inside a much larger file (along with several other types of data) and I want to pull it into a memory buffer and play it back without having to pull it out into a .MPEG file first (this is a very time consuming process on data files in the range of 50-100GB). I've tried to find answers on this board and in the SDK reference but it's a bit confusing. Thanks.

Re: Streaming file data to WMP "Alessandro Angeli" <nobody[ at ]nowhere.in.the.net> 5/14/2007 6:20:03 PM From: "evanandr" [Quoted Text] > I'm new to WMP development and I'm trying to figure out > how I can send raw data (in this case, MPEG-2 TS video) > to WMP for streaming playback. > > The MPEG-2 data is stored inside a much larger file > (along with several other types of data) and I want to > pull it into a memory buffer and play it back without > having to pull it out into a .MPEG file first (this is a > very time consuming process on data files in the range of > 50-100GB). > > I've tried to find answers on this board and in the SDK > reference but it's a bit confusing. Actually there is nothing confusing in the answers given in this newgroup several times: you must write a DirectShow source filter or parser. The exact type of filter depends on the exact type of data you have (MPEG-2 doesn't say much: e.g. is it a TS, PS or ES?), the set of other filters you want it to work with (do you want it to work with the stock MPEG-2 splitters or some third-party splittters/decoders?) and how you retrieve the data. -- // Alessandro Angeli // MVP :: DirectShow / MediaFoundation // mvpnews at riseoftheants dot com // http://www.riseoftheants.com/mmx/faq.htm

Re: Streaming file data to WMP evanandr 5/14/2007 7:00:00 PM Nothing is confusing when you already know about it and have worked with it. I couldn't find anything in the forum (no, I didn't read the entire thing and my searches weren't finding much), the SDK reference is what was confusing (to a WMP development newbie like myself). As you'll note in my original message, this is transport stream data (TS). I want this to be as generic as possible so stock splitters/decoders would be ideal. If you know of any good guides/tutorials/examples of DirectShow source filters I'd appreciate a link. If not, I'll see what I can find myself. Thanks. "Alessandro Angeli" wrote: [Quoted Text] > From: "evanandr" > > > I'm new to WMP development and I'm trying to figure out > > how I can send raw data (in this case, MPEG-2 TS video) > > to WMP for streaming playback. > > > > The MPEG-2 data is stored inside a much larger file > > (along with several other types of data) and I want to > > pull it into a memory buffer and play it back without > > having to pull it out into a .MPEG file first (this is a > > very time consuming process on data files in the range of > > 50-100GB). > > > > I've tried to find answers on this board and in the SDK > > reference but it's a bit confusing. > > Actually there is nothing confusing in the answers given in > this newgroup several times: you must write a DirectShow > source filter or parser. The exact type of filter depends on > the exact type of data you have (MPEG-2 doesn't say much: > e.g. is it a TS, PS or ES?), the set of other filters you > want it to work with (do you want it to work with the stock > MPEG-2 splitters or some third-party splittters/decoders?) > and how you retrieve the data. > > -- > // Alessandro Angeli > // MVP :: DirectShow / MediaFoundation > // mvpnews at riseoftheants dot com > // http://www.riseoftheants.com/mmx/faq.htm > > >

Re: Streaming file data to WMP "Alessandro Angeli" <nobody[ at ]nowhere.in.the.net> 5/14/2007 8:16:18 PM From: "evanandr" [Quoted Text] > Nothing is confusing when you already know about it and > have worked with it. I meant this question is asked almost on a weekly basis and I personally and others as well have given more or less detailed instructions on several occasions. > I couldn't find anything in the forum (no, I didn't read > the entire thing and my searches weren't finding much), > the SDK reference is what was confusing (to a WMP > development newbie like myself). On this I'll always agree: the WMP SDK could spend 2 lines to clearly state that it only deal with the WMP *application* API while for format support you should look at DirectShow. > As you'll note in my original message, this is transport > stream data (TS). I want this to be as generic as > possible so stock splitters/decoders would be ideal. Since you have a TS, you're lucky and you can write a simple push source that will work with the stock MPEG-2 Demultiplexer. > If you know of any good guides/tutorials/examples of > DirectShow source filters I'd appreciate a link. If not, > I'll see what I can find myself. The DirectShow SDK (part of the Platform/Windows SDK) contains tutorials and samples. You should look at either the Push or Ball samples (which output uncompressed video, so you'll need to change them to output a TS stream: see the doc page about the MPEG-2 Demultiplexer for supported media types). The CSource base class reference privides instructions on how to write a push source and the chapter "Writing DirectShow Filters" in the "Using DirectShow" section provides background info on DS filters. You should also read the "About DirectShow" section first. -- // Alessandro Angeli // MVP :: DirectShow / MediaFoundation // mvpnews at riseoftheants dot com // http://www.riseoftheants.com/mmx/faq.htm

Re: Streaming file data to WMP evanandr 5/14/2007 10:04:00 PM Thanks for the very detailed help. I'm sure this does get asked a lot. I assumed this must be a problem seen previously and was surprised I had trouble finding answers. I guess I needed better search terms. Thanks again. "Alessandro Angeli" wrote: [Quoted Text] > From: "evanandr" > > > Nothing is confusing when you already know about it and > > have worked with it. > > I meant this question is asked almost on a weekly basis and > I personally and others as well have given more or less > detailed instructions on several occasions. > > > I couldn't find anything in the forum (no, I didn't read > > the entire thing and my searches weren't finding much), > > the SDK reference is what was confusing (to a WMP > > development newbie like myself). > > On this I'll always agree: the WMP SDK could spend 2 lines > to clearly state that it only deal with the WMP > *application* API while for format support you should look > at DirectShow. > > > As you'll note in my original message, this is transport > > stream data (TS). I want this to be as generic as > > possible so stock splitters/decoders would be ideal. > > Since you have a TS, you're lucky and you can write a simple > push source that will work with the stock MPEG-2 > Demultiplexer. > > > If you know of any good guides/tutorials/examples of > > DirectShow source filters I'd appreciate a link. If not, > > I'll see what I can find myself. > > The DirectShow SDK (part of the Platform/Windows SDK) > contains tutorials and samples. You should look at either > the Push or Ball samples (which output uncompressed video, > so you'll need to change them to output a TS stream: see the > doc page about the MPEG-2 Demultiplexer for supported media > types). The CSource base class reference privides > instructions on how to write a push source and the chapter > "Writing DirectShow Filters" in the "Using DirectShow" > section provides background info on DS filters. You should > also read the "About DirectShow" section first. > > > -- > // Alessandro Angeli > // MVP :: DirectShow / MediaFoundation > // mvpnews at riseoftheants dot com > // http://www.riseoftheants.com/mmx/faq.htm > > >