Stream MediaRecorder file while recording

Question

I am trying to get a video stream from point A (2.1 Android phone) to point B (my server) in real time. How can i do this? Following are my attempts (a little long but short!)

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The goal is to get hourly video recorded from the phone to the server without pausing / stopping the stream. a delay of up to several minutes is not a problem. I tried three approaches

• a FileInputStream stream that reads destination video from a FileDescriptor
• call MediaRecoder.setOutputFile on FD of the 'sender' connector. this connector connects to LocalSocketServer, the destination of which is the receiver socket.
• open the socket for my server and providing setOutputFile your FD

unfortunately, both attempts failed.

• Logs only 24 bytes when i call FileInputStream.available (), and the actual number of bytes after I call Recorder.stop ()

• gives me this completely useless stacktrace

  ERROR / AndroidRuntime (18532): caused by: java.lang.RuntimeException: failed to start. ERROR / AndroidRuntime (18532): on android.media.MediaRecorder.start (native method) ERROR / AndroidRuntime (18532): in com.example.demovideo.DemoVideo.initializeCamera (...) ...

• same error 2

code fragments (parts skipped)

one)

fileOut = new FileOutputStream(pathToFile); ... recorder.setOutputFile(fileOut.getFD()); recorder.prepare() recorder.start() // in an Async Thread fileIn = FileInputStream(fileOut.getFD); while (recording) { fos.flush(); Log.w("---", "bytesAvailable: " + fileIn.available()); //always returns 24 Thread.sleep(1000); } 

2)

 // in a Thread server = new LocalServerSocket(SOCKET_ADDRESS); while (true){ receiver = server.accept(); if (receiver != null){ InputStream input = receiver.getInputStream(); ... // processing would go here } } sender = new LocalSocket(); sender.connect(new LocalSocketAddress(SOCKET_ADDRESS)); recorder.setOutputFile(sender.getFileDescriptor()); ... recorder.prepare(); recorder.start(); // <- error 

• correctly saves intact video to sd
• works if i use setOutputFile (pathToFile). sockets also work when I run sender.getOutputStream().write(message.getBytes());

Answer 1

• I created a mobile video streaming application with this approach and it worked. Therefore, this should be the right approach. Later, when I was no longer part of the project, I received reports that this approach did not work with some newer phones - primarily the Samsung Galaxy S. The problem was that these phones rarely dispelled video data, perhaps once a minute. Which phone do you use to test this?

• & 3. MediaRecorder is a wrapper around its own library. I assume that this library wants a particular file to be written to a non-channel. At the file system level, files and channels look the same, but you cannot have random access to a channel (search).