在Xamarin Android设备（4.4+）上播放H264视频/音频流（来自现有RTP会话）

Question

I am developing an App on Xamarin right now for Android, alter IOS. I have started a SIP session as a Client successfully and got a SDP.

With the session description I start my RTPClient (I am using Managed Media Aggregation ( https://net7mma.codeplex.com/ ) also successfully it seems.

I get an URI ending with a Media Port.

I have tried different ways to Play back that stream:

Android.Widget.VideoView:

videoview.SetVideoURI(Android.Net.Uri.Parse(fullPath));
videoview.Start();

says in a popup box "Cannot Playback Video" or something like this just in german in my case.

So I tried an Android.Media.MediaPlayer:

player.Reset();
player.SetDataSource(fullPath);
player.Prepare();

runs into an exception and

player.PrepareAsync();

seems to run nowhere.

Should These work somehow and am I just doing wrong?

Or must I give it more info like it is H.264 decoded, has 640x480 Pixels and more stuff I know exactly from my SDP media description?

I have taken a look into that MediaFormat and MediaCodec classes from Android but still do not know how to use them exactly for my case (RTP Connection with known Media description).

Thanks a lot and have a nice Weekend!

Eric

Answer 1

You should use an external component like the Google ExoPlayer to media with encoding. There is a Nuget package available for this: https://github.com/martijn00/ExoPlayerXamarin

Answer 2

That's my project... (net7mma) eg I am the Author...

You can use either the Rtsp or Rtp client quite easily and I have verified such in Android recently.

If you have specific questions make a thread in the project's home page and I will address it.