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• Can we Stream Live Audio from Android phone using FFmpeg ?

  17 août 2023, par Uday

  Im using ffmpeg_kit_flutter package to Stream data to the RTSP server in Flutter.

  


  IOS : Working

  


  Android : Its not working

  


  Command Used :

  


  'ffmpeg -f avfoundation -i ":0" -acodec aac -f rtsp -rtsp_transport tcp "$Url"'


  


  When i ran a "ffmpeg -devices" command on android, it returns follwing response, through which i got to know android doesn't support avfoundation but android has android_camera,
Does this android_camera support audio too ?

  


  Command : 'ffmpeg -devices'

  


  Response :

  


  I/flutter (10620): logs:  libavutil      57. 28.100 / 57. 28.100
I/flutter (10620): logs:  libavcodec     59. 37.100 / 59. 37.100
I/flutter (10620): logs:  libavformat    59. 27.100 / 59. 27.100
I/flutter (10620): logs:  libavdevice    59.  7.100 / 59.  7.100
I/flutter (10620): logs:  libavfilter     8. 44.100 /  8. 44.100
I/flutter (10620): logs:  libswscale      6.  7.100 /  6.  7.100
I/flutter (10620): logs:  libswresample   4.  7.100 /  4.  7.100
I/flutter (10620): logs:Devices:
I/flutter (10620):  D. = Demuxing supported
I/flutter (10620):  .E = Muxing supported
I/flutter (10620):  --
I/flutter (10620): logs: D  android_camera   
I/flutter (10620): logs: D  lavfi            
I/flutter (10620): logs: DE video4linux2,v4l2


  


  Commands which I tried in Android

  


  FFmpegKit.execute('-y -f android_camera -i 0:1 -r 30 -c:a aac -f rtsp -rtsp_transport tcp "$Url"');

FFmpegKit.execute('-y -f android_camera -i 0:1 -r 30 -c:a libmp3lame -qscale:a 2 "/storage/emulated/0/Download/androidvideo.mp3"');

FFmpegKit.execute('-y -f android_camera -i 0:0 -r 30 -c:a wavpack -b:a 64k "/storage/emulated/0/Download/androidvideo.wav"');


  


  This command records video but no audio in it.

  


  FFmpegKit.execute('-video_size hd720 -f android_camera -camera_index 1 -i anything -r 10 -t 00:00:15 "$dir/androidvideo.mp4”');


  


• Android ffmpeg command shows java.io.IOException : Error running exec()

  26 mai 2023, par Jamal

  I would like to use ffmpeg binary executable in my Android project.for this purpose I have used pre built ffmpeg Android binary from this(https://github.com/hiteshsondhi88/ffmpeg-android/releases/download/v0.3.3/prebuilt-binaries.zip) link.

  



  As per procedure I have to place the executable file into /data/data/com.example.rampedsample directory, here com.example.rampedsample is my project packageName.I couldn't find this location in my device as it is un rooted.So I pasted that executable into Android emulator's com.example.rampedsample directory using DDMS perspective.

  



  In my Activity used the below code

  



   try {
            Process p = Runtime.getRuntime().exec("/data/data/com.example.rampedsample/ffmpeg "+Environment.getExternalStorageDirectory()+"/Movies/ramp_video.mp4"
                    +" -map 0:v -codec copy "+Environment.getExternalStorageDirectory()+"/Movies/ramp_video2.mp4");


        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }


  



  AndroidManifest permission

  



  


  



  error

  



  04-13 16:59:55.314: W/System.err(11387): java.io.IOException: Error running exec(). Command: [/data/data/com.example.rampedsample/ffmpeg, /mnt/sdcard/Movies/ramp_video.mp4, -map, 0:v, -codec, copy, /mnt/sdcard/Movies/ramp_video2.mp4] Working Directory: null Environment: null
04-13 16:59:55.314: W/System.err(11387):    at java.lang.ProcessManager.exec(ProcessManager.java:211)
04-13 16:59:55.355: W/System.err(11387):    at java.lang.Runtime.exec(Runtime.java:168)
04-13 16:59:55.355: W/System.err(11387):    at java.lang.Runtime.exec(Runtime.java:241)
04-13 16:59:55.355: W/System.err(11387):    at java.lang.Runtime.exec(Runtime.java:184)
04-13 16:59:55.355: W/System.err(11387):    at com.example.rampedsample.MainActivity.onCreate(MainActivity.java:18)
04-13 16:59:55.355: W/System.err(11387):    at android.app.Activity.performCreate(Activity.java:5008)
04-13 16:59:55.355: W/System.err(11387):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)


  


• How to install JavaCV on Android and use FrameGrabber

  16 mars 2023, par Mark

  Could someone tell me where I'm doing wrong ? These are the steps that I have followed :

  


  


  1. Downloaded the adt-bundle-windows from android developer website

     


  


  2. Created a new project and a libs/armeabi folder

     


  


  3. Extract all the *.so files from javacv-android-arm.jar, opencv-2.4.3-android-arm.zip, and ffmpeg-1.0-android-arm.zip directly into the newly created "libs/armeabi" folder, without creating any new subdirectories.

     


     (A part that I don't understand is "Extract all the *.so files from javacv-android-arm.jar", I simply inserted the javacv-android-arm.jar file inside libs/armeabi folder)

     


  


  4. Navigated to Project > Properties > Java Build Path > Libraries and click "Add JARs...".

     


  


  5. Selected both javacpp.jar and javacv.jar from the newly created "libs" folder.

     


  


  


  After that I have downloaded OpenCV2.4.3 from here and ffmpeg from here and extracted the files on my C :/ root.
Finally after setting my system path...,

  


  C:\opencv\build\x64\vc10\bin;C:\ffmpeg-64\bin;C:\Program Files\Java\jdk1.7.0_10\bin


  


  ...if I try to use simply FrameGrabber in my Android application...

  


  import com.googlecode.javacv.FFmpegFrameGrabber;
import com.googlecode.javacpp.Loader;
import com.googlecode.javacv.*;
import com.googlecode.javacv.cpp.*;
import static com.googlecode.javacv.cpp.opencv_core.*;
import static com.googlecode.javacv.cpp.opencv_imgproc.*;
import static com.googlecode.javacv.cpp.opencv_calib3d.*;
import static com.googlecode.javacv.cpp.opencv_objdetect.*;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        FFmpegFrameGrabber i = new FFmpegFrameGrabber("/mnt/sdcard/SinglePerson.avi"); 
    }


  


  ...I get the following errors :

  


  01-29 17:59:26.976: E/AndroidRuntime(30656): FATAL EXCEPTION: main
01-29 17:59:26.976: E/AndroidRuntime(30656): java.lang.NoClassDefFoundError: com.googlecode.javacv.FFmpegFrameGrabber
01-29 17:59:26.976: E/AndroidRuntime(30656):    at com.example.xxxxxxxxx.MainActivity.onCreate(MainActivity.java:23)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.Activity.performCreate(Activity.java:4465)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.ActivityThread.access$600(ActivityThread.java:123)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.os.Handler.dispatchMessage(Handler.java:99)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.os.Looper.loop(Looper.java:137)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at android.app.ActivityThread.main(ActivityThread.java:4424)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at java.lang.reflect.Method.invokeNative(Native Method)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at java.lang.reflect.Method.invoke(Method.java:511)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
01-29 17:59:26.976: E/AndroidRuntime(30656):    at dalvik.system.NativeStart.main(Native Method)


  


  Someone can help me please ?