Thread: Android video issues when loading a Samba video file from router

Hey all I have the following Java code I did in Android Studio that I am needing some help with.

I am needing to be able to load a shared file from my router (It's running OpenWRT/Luci) with the Samba file sharing turned on. I have tested the code out below to make sure it's finding the file and I can confirm It can find it when it checks for SMB file found? and it comes back true.

When loading local file:


However, the issue is that when I switch over to getting the SMB video it does not load like the other tests that I did - loading it up from local storage.

When loading from SMB file:


My full code that I am currently using:

    package com.example.smbvidoverhttp;
 
    import android.content.Context;
    import android.net.Uri;
    import android.os.Bundle;
    import android.util.Log;
    import android.view.View;
    import android.widget.Button;
    import android.widget.MediaController;
    import android.widget.VideoView;
 
    import androidx.annotation.Nullable;
    import androidx.appcompat.app.AppCompatActivity;
 
    import java.io.ByteArrayInputStream;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.RandomAccessFile;
    import java.lang.reflect.InvocationTargetException;
    import java.lang.reflect.Method;
    import java.net.MalformedURLException;
    import java.util.HashMap;
    import java.util.Map;
 
    import fi.iki.elonen.NanoHTTPD;
    import jcifs.smb.NtlmPasswordAuthentication;
    import jcifs.smb.SmbAuthException;
    import jcifs.smb.SmbFile;
    import jcifs.smb.SmbFileInputStream;
    import jcifs.smb.SmbFileOutputStream;
 
    public class MainActivity2 extends AppCompatActivity {
        Button btn;
        Button btn2;
        VideoView videoView;
 
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
 
            btn = findViewById(R.id.button);
            btn2 = findViewById(R.id.button2);
            videoView = findViewById(R.id.videoView);
            MediaController mediaController = new MediaController(this);
            videoView.setMediaController(mediaController);
 
            btn.setOnClickListener(v -> {
                try {
                    VideoServer blah = new VideoServer();
                    blah.start();
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            });
 
            btn2.setOnClickListener(v -> {
                try {
                    videoView.setVideoURI(Uri.parse("http://127.0.0.1:7777/bun33s.mp4"));
                    //videoView.requestFocus();
                    videoView.start();
                } catch (Exception e) {
                    Log.d("", "ERROR: " + e.getMessage());
                }
            });
        }
 
        @Nullable
        @SuppressWarnings("JavaReflectionMemberAccess")
        public String findSDCardPath() {
            try {
                final Class<?> surfaceControlClass = Class.forName("android.os.storage.StorageManager");
                Object StorageServ = getApplicationContext().getSystemService(Context.STORAGE_SERVICE);
 
                Method method1 = surfaceControlClass.getMethod("getVolumePaths");
                method1.setAccessible(true);
                String[] volumes = (String[]) method1.invoke(StorageServ);
 
                if (volumes.length > 1) {
                    Log.d("smbTest", "External: " + volumes[1]);
                    return volumes[1];
                } else {
                    Log.d("smbTest", "Internal: " + volumes[0]);
                    return volumes[0];
                }
            } catch (ClassNotFoundException | InvocationTargetException | NoSuchMethodException |
                     IllegalAccessException ex) {
                Log.d("smbTest", "ERROR: " + ex.getMessage());
            }
 
            return null;
        }
 
        public class VideoServer extends NanoHTTPD {
            String filePath = "";
 
            public VideoServer() {
                super(7777);
            }
 
            @Override
            public Response serve(IHTTPSession session) {
                final String theVidName = ((HTTPSession) session).getUri(); // /bun33s.mp4  
                String range = null;
                Map<String, String> headers = session.getHeaders();
 
                for (String key : headers.keySet()) {
                    if ("range".equals(key)) {
                        range = headers.get(key);
                        break;
                    }
                }
                if (range != null) {
                    try {
                        return getPartialResponse("video/mp4", range);
                    } catch (IOException e) {
                        throw new RuntimeException(e);
                    }
                } else {
                    return responseVideoStream(session, filePath);
                }
            }
 
            public Response responseVideoStream(IHTTPSession session, String videopath) {
                try {
                    NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(null, "user here", "password here");
                    SmbFile source = new SmbFile("smb://192.168.8.1/GL-Samba/bun33s.mp4", auth);
                    SmbFileInputStream inputStream = new SmbFileInputStream(source);
                    boolean b;
 
                    try {
                        b = source.exists();
                        Log.d("", "SMB file found? " + b);
                    }
                    catch(SmbAuthException e) {
                        Log.d("", "Exception caught while calling SmbFile#exists(): " + e.getMessage());
                    }
                    //InputStream in = source.getInputStream();    
                    //FileInputStream fis = new FileInputStream(videopath);
 
                    return newChunkedResponse(Response.Status.OK, "video/mp4", inputStream); 
                } catch (MalformedURLException e) {
                    throw new RuntimeException(e);
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
 
            private Response getPartialResponse(String mimeType, String rangeHeader) throws IOException {
                File file = new File(filePath);
                String rangeValue = rangeHeader.trim().substring("bytes=".length());
                long fileLength = file.length();
                long start, end;
 
                if (rangeValue.startsWith("-")) {
                    end = fileLength - 1;
                    start = fileLength - 1 - Long.parseLong(rangeValue.substring("-".length()));
                } else {
                    String[] range = rangeValue.split("-");
                    start = Long.parseLong(range[0]);
                    end = range.length > 1 ? Long.parseLong(range[1]) : fileLength - 1;
                }
 
                if (end > fileLength - 1) {
                    end = fileLength - 1;
                }
 
                if (start <= end) {
                    long contentLength = end - start + 1;
                    FileInputStream fileInputStream = new FileInputStream(file);
 
                    fileInputStream.skip(start);
                    Response response = newFixedLengthResponse(Response.Status.PARTIAL_CONTENT, mimeType, fileInputStream, contentLength);
                    response.addHeader("Content-Length", contentLength + "");
                    response.addHeader("Content-Range", "bytes " + start + "-" + end + "/" + fileLength);
                    response.addHeader("Content-Type", mimeType);
 
                    return response;
                } else {
                    return newChunkedResponse(Response.Status.INTERNAL_ERROR, "text/html", null);
                }
            }
        }
    }

For testing it out I'm just using the ADB with the correct device number to send a http request to the built in browser:

adb -s 25131HFDD6222C shell am start -a android.intent.action.VIEW -d http://127.0.0.1:7777/bun33s.mp4

And like I said, it plays when I test it out loading a local file on the device but wont play when using the SMB file.

What am I missing?

It seems that you are having difficulties receiving SMB video. The problem may be due to differences in the boot mechanism between the local computer and the SMB storage. Check that the paths and settings for accessing SMB resources are correct. I had a similar problem when I wanted to remove the background from a video, it’s good that later I found services depositphots.com, which, using AI tools, was able to remove the background without any problem. If these tips don't help you, you can still consider using debugging tools such as inference and logging to identify specific points of failure. If you have the code, please provide it for more detailed analysis.

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