I am developing application that receives media content(.mp3/.mp4/.avi) in form of bytes.
However, as WPF doesn't support playing media from stream, So I started with WMP.dll.
I am creating class library that receives media in form of bytes and media format and play media accordingly.
Referring Creating the WMP Programmatically, however, I didn't find method to pass bytes stream.
So My question is how do I play media from bytes using wmp.dll?
Edit: I am using WMP.dll using COM located at C:\WINDOWS\system32\wmp.dll
I've been through this process a long time ago ...
Basically I would advise you NOT to go down the WMP route at all. It's heavy, cumbersome and not very nice to work with. I encountered lots of issues along the way basically. Least of all it being feature rich (which it isn't).
The best solution I found and the one I'm still using now is a library called BASS from Un4SeenDevelopments.
This library is tiny < 100k and basically it's awesome. Never had a problem with it and it has it's own .NET wrapper that is a free download from the site.
The support is amazing and the compatibility via a massive selection of plugins and additional libraries is staggering.
Highly recommended for what you want to do.
"BASS is an audio library for use in software on several platforms. Its purpose is to provide developers with powerful and efficient sample, stream (MP3, MP2, MP1, OGG, WAV, AIFF, custom generated, and more via OS codecs and add-ons), MOD music (XM, IT, S3M, MOD, MTM, UMX), MO3 music (MP3/OGG compressed MODs), and recording functions. All in a compact DLL that won't bloat your distribution."
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I need to play the audio files like mp3 and .wav using c#. I don't want to use the com dll's and I need some functionality like to set the current time and end time of the file to play. etc.
Need some sample exmaples for the same.
To play audio using C# at some point the managed code will need to call into unmanaged APIs. NAudio provides wrappers for four different Windows audio playback APIs. WaveOut would be the most appropriate choice for you, since it is not COM based.
To decode MP3, you have a choice of using the codecs that come with Windows or trying to find a fully managed MP3 decoder. NAudio provides interop wrappers for two different Windows MP3 decoders - the Fraunhofer ACM codec that comes with Windows XP and above and the DirectX Media Object decoder that comes with Windows Vista and above. If you want a fully managed MP3 decoder, you can try NLayer which is a port I made of JavaLayer to .NET, although its public API doesn't currently allow it to slot neatly into an NAudio app.
I am searching for a video player component (windows), usable in .Net (C#). What is required, is an access to the underlying stream, because parts of the video should be decrypted on the fly, and the decrypted video should never be stored on the hard disk. Ideally, it should also be portable for Linux and Mac.
Anyone knows some good video components featuring the requirements?
Thanks!
Found two solutions for the problem, since I could not find a component flexible enough.
Here are the solutions:
1. A custom video player, composed of demux+decode and a rendering (to directx or opengl for example).
2. A virtual hard disk with a decryption layer, we implemented this solution, based on dokan vhdd driver.
I've written a basic SL4 application to capture audio data from the microphone using CaptureSource. The trouble is, it's raw PCM output - which means huge and uncompressed.
Given that I need this application to run purely within a SL4 environment, how can I compress the PCM audio data into something that can be delivered to a remote server more easily?
Essentially I need a solution that I can also deploy/include in a Windows Phone Series 7 application as well as one that will work in the browser environment - so managed code solutions only, I think?
In conversation, people have suggested Speex and WMA for instance, but I haven't found any libraries or examples that work without requiring reference to DLL's that won't work in a SL4 project.
Just a small addition to Jason's post:
There is another port of Speex to .Net and Silverlight 4 called NSpeex.
Please see the WavFileHelper class in Silverlight 4 Rough Notes: Camera and Microphone Support on Mike Taulty's blog (a bit lower than the middle of the page, but the full article is worthwhile) in which he compresses the PCM file to WAV.
Here's another example of when writing to WAV you can change values such as Mono/Stereo, which will directly change the size of the WAV file: Audio recorder Silverlight 4 sample. And one more that gives more details about writing to WAV: Creating Sound using MediaStreamSource in Silverlight 3 Beta
Take a look at this. It looks like he has ported the Speex encoder to C# for the exact problem you are trying to solve. It is available here. Speex is designed for speech and should perform better than wma, mp3, or other audio codecs that are designed to handle music if you are just encoding speech, which I assume since you are grabbing from the mic.
This article http://alvas.net/alvas.audio,articles.aspx#how-to-save-audio-to-mp3-on-silverlight about save audio on client. To send audio data to a server you can use WebClient, for example.
You can do encoding thru the server, by send all stream to WCF service and do your encoding thru Microsoft Expression Encoding SDK API.
Please, see this url that i have asked before:
http://forums.silverlight.net/forums/t/181141.aspx
Regards
I want to provide a choice between streaming 'channels', if you will, in a web application. These are Windows Media streams of live events that are being broadcast from a Windows Media Services 9 distribution network.
I want to provide a relatively recent thumbnail image of the stream (as a user, you would expect to see this), but although I've seen this done in Flash on CNN and countless other sites, I've never seen this done with Windows Media.
I already have a C# / DirectX library that can extract a thumbnail from a WMV file, but obviously the stream doesn't come from a file if it's a live source.
My assumptions so far are:
Will need to run some kind of service application/daemon that will receive a stream into a Windows Media Player object and somehow take thumbnails if WMPlayer supports it...
-or-
Configure the streams to archive to file, and use the existing class library to take a peek at the last frame available in the archive file being written to get the thumbnail.
I would much rather do #1 because it seems like the clean solution, but don't know if/how WMPlayer supports grabbing a frame.
Are there better ways of doing this?
Not sure if using media player is a good idea in such case. I would look into this:
http://sourceforge.net/projects/windowsmedianet/
I want to transcode a lot of audio from its source format to PCM without resampling or messing with the sample size. I figure if Windows Media Player can play the file and it doesn't use a legacy ACM codecs it must be using DirectSound to do so (this is on Windows XP and Windows Server 2k3). So is it possible to access DirectSound from C# and do so? I've tried searching the web but all the examples have been about playback which I have no interest in doing.
DirectSound is an audio playback API, you mean DirectShow. Windows Media player does use DirectShow to play audio files. In theory, all you need to do is build the same playback graph that media player uses, but replace the audio driver on the end with a .WAV writer filter.
This is somewhat easier to do in C++ code, since the DirectShow graph object is really designed to be called from C++, but with a good set of interop definitions, you can do this in C#.
There's http://directshownet.sourceforge.net/ for serious hacking with DirectShow in .NET, but that's probably overkill for your problem.
I would suggest getting a copy of GraphEdit if you don't already have one. You can use it to "prototype" direct show graphs interactively. drop a file into graphedit. then delete the filter on the end and replace it with a file writer filter.
One problem you will have is that there is no .WAV file writer filter in the default set of o DirectShow filters, you will have to find or write one.
If you just want to get the files converted, and could care less about learning how to write code using DirectShow, I would suggest that you just get a copy of Sound Forge (possibly even a demo version). It has a scripting language (C#,vb) that can be used to easily batch process most audio file formats.
Conversion to WAV can be done from the Windows command line using SoX (Sound eXchange, http://sox.sourceforge.net/). You could write a batch file or a C# application that calls SoX with the proper attributes. I'm not sure how WinAMP's feature works specifically, but it has a file writer output option built in as well. You can stream the entire playlist to wave files.
Have a look at this article on CodeProject about audio conversion here and here.