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• How to fix : GUI application who control a simple command of ffmpeg with python

  9 octobre 2019, par maoca

  I want to make a graphic application with only 2 buttons (start / stop) that allows to launch a subprocess (start) and stop it (stop).
  (I’m using Python3, PyQt5 and ffmpeg)
  The process captures the screen in a video and save it to an mp4 using the ffmpeg command to launch the POpen command.
  To make a clean output of the command, ffmpeg uses ’q’ that I write by stdin.

  In a simple script it works for me but I can’t get it to work within the buttons.

  My knowledge is very basic and as much as I look for information I do not understand what I am doing wrong, I appreciate any comments that let me move on.

  This is my code :

  import sys
  
  import subprocess
  
  from PyQt5.QtWidgets import QApplication, QWidget, QPushButton
  
  
  
  class Ventana(QWidget):
  
  
  
      def __init__(self):
  
          super().__init__()
  
          # Button 1
  
          pybutton = QPushButton('REC', self)
  
          pybutton.clicked.connect(self.clickMethodB1)
  
          pybutton.resize(50, 32)
  
          pybutton.move(50, 50)
  
  
  
          # BOTON 2
  
          pybutton = QPushButton('STOP', self)
  
          pybutton.clicked.connect(self.clickMethodB2)
  
          pybutton.resize(100, 32)
  
          pybutton.move(150, 50)
  
  
  
  
  
          self.initUI()
  
  
  
  
  
      def initUI(self):
  
          self.setGeometry(300, 300, 300, 220)
  
          self.setWindowTitle('FFMPEG')
  
          self.move(800, 400)
  
          self.show()
  
  
  
      def clickMethodB1(self):
  
          global ffmpeg
  
          filename_mp4 = 'c://tmp//output.mp4'
  
          print('REC')
  
  
  
          command = 'ffmpeg -f dshow -i video="screen-capture-recorder" '+ filename_mp4
  
  
  
          ffmpeg = subprocess.Popen(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE,                                                    encoding='utf-8', shell=True)
  
  
  
  
  
      def clickMethodB2(self):
  
  
  
          print('STOP')
  
          ffmpeg.stdin.write(str('q'))            
  
  
  
  
  
  if __name__ == '__main__':
  
      app = QApplication(sys.argv)
  
      ex = Ventana()
  
      sys.exit(app.exec_())

• Unable find an ffmpeg binary for your Android system

  22 juillet 2024, par Ayush Thakur

  Working on a project where I need to use FFmpeg library in Kotlin to work on some audio files. However I'm unable to initialize the ffmpeg library itself.

  


  this is the error I'm getting

  


  Could not find an ffmpeg binary for your Android system. Did you forget calling: 'new AndroidFFMPEGLocator(this);' ?
2024-07-22 18:48:33.910 11800-11800 PipeDecoder             com.example.sangeet                  E  Tried to unpack a statically compiled ffmpeg binary for your architecture to: /data/user/0/com.example.sangeet/cache/ffmpeg
2024-07-22 18:48:33.923 11800-11800 AndroidRuntime          com.example.sangeet                  E  FATAL EXCEPTION: main (Ask Gemini)
                                                                                                    Process: com.example.sangeet, PID: 11800
                                                                                                    java.lang.Error: Decoding via a pipe will not work: Could not find an ffmpeg binary for your system


  


  @HiltAndroidApp
class Sangeet: Application(){
    override fun onCreate() {
        super.onCreate()
        provideFirebaseApp(this)
        FFmpegKitConfig.setLogLevel(Level.AV_LOG_INFO)
        FFmpegKitConfig.enableLogCallback { Log.d("ffmpeg",it.message) }
        initializeFFmpegKit()
    }
    private fun initializeFFmpegKit() {
        // This method should be sufficient to ensure FFmpegKit is ready to use
        val ffmpegSession = FFmpegKit.execute("ffmpeg -version")
        if (ReturnCode.isSuccess(ffmpegSession.returnCode)) {
            Log.d("FFmpeg", "FFmpeg is ready to use.")
        } else {
            Log.e("FFmpeg", "Failed to initialize FFmpeg: ${ffmpegSession.failStackTrace}")
            initializeFFmpegBinary()
        }
    }
    private fun initializeFFmpegBinary() {
        val ffmpegBinaryPath = filesDir.absolutePath + "/ffmpeg"
        val binaryFile = File(ffmpegBinaryPath)
        if (!binaryFile.exists()) {
            Log.e("FFmpeg", "FFmpeg binary not found at $ffmpegBinaryPath")
            // Copy or download the FFmpeg binary to this path
        } else {
            Log.d("FFmpeg", "FFmpeg binary found at $ffmpegBinaryPath")
        }
    }
}


  


  Tried using AndroidFFMPEGLocator(this) ; as suggested by the compiler in my code but unknown reference error is coming for the above line of code.

  


  Also tried using FFmpegKit.init(this) function but init is also not being recognised by the compiler

  


• android:video watermark show error

  27 avril 2016, par Sakibmohammad Syed

  I want to watermark video and below is my code but when I try to run then it show error like Failed to validate license file, existing!.

      public class MainActivity extends AppCompatActivity {
  
      private String strAudioFolderPath;
  
      @Override
  
      protected void onCreate(Bundle savedInstanceState) {
  
          super.onCreate(savedInstanceState);
  
          setContentView(R.layout.activity_main);
  
  
  
          // here my ffmpeg command to watermark video.
  
          String s = "ffmpeg -i /sdcard/Download/testing.mp4 -i /sdcard/temp1.jpg -filter_complex 'overlay=10:main_h-overlay_h-10' /sdcard/Download/out.mp4";
  
  
  
          GeneralUtils.deleteFileUtil(strAudioFolderPath + "vk.log");
  
          PowerManager powerManager = (PowerManager) this.getSystemService(Activity.POWER_SERVICE);
  
          PowerManager.WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "VK_LOCK");
  
          wakeLock.acquire();
  
          LoadJNI vk = new LoadJNI();
  
          try {
  
              try {
  
                  vk.run(GeneralUtils.utilConvertToComplex(s), strAudioFolderPath, MainActivity.this);
  
                  Log.e("Checking water marker", ">>>>>>>>>>>>>>>");
  
  
  
              } catch (Throwable e) {
  
              } finally {
  
                  if (wakeLock.isHeld())
  
                      wakeLock.release();
  
                  else {
  
                  }
  
              }
  
          } catch (Exception e)
  
          {
  
              e.printStackTrace();
  
          }        
  
      }
  
  }

  and error show in logcat like below.

      04-26 17:13:18.211 20492-20492/com.example.android.watermarkvideo I/Videokit: license file not found...
  
  04-26 17:13:18.211 20492-20492/com.example.android.watermarkvideo I/Videokit: license file /sdcard/Download/testing.mp4/ffmpeglicense.lic not created.
  
  04-26 17:13:18.211 20492-20492/com.example.android.watermarkvideo D/Videokit: license check rc: -3
  
  04-26 17:13:18.211 20492-20492/com.example.android.watermarkvideo E/Videokit: Failed to validate license file, existing!

  Actually I have used ffmpeg library to watermak on video file but it is not woking as well as I have not find any proper solution so please help.
  Thanks in advance.