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• FFmpeg youtube stream get corrupted until restart

  19 février 2023, par unpwn

  I am streaming images from python to youtube using ffmpeg.
It's working fine with just one problem.
Sometimes the stream get somehow corrupted an the stream looks like this :

  


  Corrupted stream image

  


  Or you can see for yourself in the stream itself : https://www.youtube.com/watch?v=PG6NLtr0jjM (Scroll back to the beginning)

  


  Then I have to restart ffmpeg and its working fine. Sometimes an error occurs regarding the network and I have to automatically restart the stream. Then there is the possibility it is corrupted again.

  


  The parameters for ffmpeg are the following :

  


  cmd_out = ['ffmpeg',
       '-re',
       '-f', 'concat',
       '-i', os.path.join(BASE_DIR, 'music', 'music.txt').replace('\\', '/'),           
       '-r', '1',
       '-f', 'image2pipe',
       '-vcodec', 'png',
       '-r', '1',
       '-i', '-',
       '-c:v', 'libx264',
       '-c:a', 'copy',
       '-g', '4',
       '-f', 'flv',
       'rtmp://a.rtmp.youtube.com/live2/{}'.format(stream_key)]  


  


  I never had that problem testing it on windows. It just appears when I use my linux server.

  


  I am using ffmpeg version 3.2.18-0+deb9u1 and the generated images are fine, when I save them to a normal file.

  


  Does someone know how to fix it ? Or where the problem is comming from ?

  


  ---

  


  Solution : An old ffmpeg version was available while using docker. I solved the problem by using a static build from https://www.johnvansickle.com/ffmpeg/

  


  I used this to use it in docker :

  


  WORKDIR /app
ADD ./ffmpeg /app
RUN mv ffmpeg /usr/local/ffmpeg
RUN chmod +x /usr/local/ffmpeg


  


  Until now the error seems to be solved.

  


• Android ffmpeg unable to merge audio(.wav file) with video(.mp4 file)

  8 avril 2015, par navya

  i am working on FFMPEG library,in which i am merging audio (.wav file) with video (.mp4 file) , for that iam using following command here :

  *String commandStr=    "ffmpeg,-y,-i,mnt/sdcard/Scatta/Scattatemp.mp4,-i,/storage/emulated/0/MicDroid/recordings/video.wav ,-strict,experimental,-map,0:0,-map,1:0,-vcodec,mpeg4,-vb,15496k,-ab,128k,-ac,2,-ar,22050,-shortest,mnt/sdcard/Scatta/mergedFile.mp4";

  for that i am using following code,but my command is not working, i am getting Commandvalidation failed exception

  GeneralUtils.deleteFileUtil(workFolder + "/vk.log");
  
  
  
          PowerManager powerManager = (PowerManager)_act.getSystemService(Activity.POWER_SERVICE);
  
          WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "VK_LOCK"); 
  
          Log.d("Prefs.TAG", "Acquire wake lock");
  
          wakeLock.acquire();
  
  String commandStr=  "ffmpeg,-y,-i,mnt/sdcard/Scatta/Scattatemp.mp4,-i,/storage/emulated/0/MicDroid/recordings/video.wav ,-strict,experimental,-map,0:0,-map,1:0,-vcodec,mpeg4,-vb,15496k,-ab,128k,-ac,2,-ar,22050,-shortest,mnt/sdcard/Scatta/mergedFile.mp4"   ;
  
  
  
  LoadJNI vk = new LoadJNI();
  
          try {
  
  
  
              vk.run(GeneralUtils.utilConvertToComplex(commandStr), workFolder, getApplicationContext());
  
              GeneralUtils.copyFileToFolder(vkLogPath, demoVideoFolder);
  
  
  
          } catch (CommandValidationException e) {
  
              Log.e("Prefs.TAG", "vk run exeption.", e);
  
              commandValidationFailedFlag = true;
  
          } catch (Throwable e) {
  
              Log.e("Prefs.TAG", "vk run exeption.", e);
  
          }
  
          finally {
  
              if (wakeLock.isHeld())
  
                  wakeLock.release();
  
              else{
  
                  Log.i("Prefs.TAG", "Wake lock is already released, doing nothing");
  
              }
  
          }
  
          Log.i("Prefs.TAG", "doInBackground finished");
  
      }
  
      catch(Exception e){
  
          e.printStackTrace();
  
          System.out.println(".exception"+e.toString());
  
      }

  i am getting following exception

   04-08 10:00:38.891: D/ffmpeg4android(7781): deleteing: /data/data/org.scatta.androidclient/files//vk.log isdeleted: false
  
   04-08 10:00:38.891: D/Prefs.TAG(7781): Acquire wake lock
  
   04-08 10:00:38.896: I/System.out(7781): <--- command strffmpeg -i  mnt/sdcard/Scatta/Scattatemp.mp4 -i    /storage/emulated/0/MicDroid/recordings/video.wav -acodec copy mnt/sdcard/Scatta/mergedFile.mp4
  
   04-08 10:00:38.896: E/ffmpeg4android(7781): Command validation failed.
  
   04-08 10:00:38.896: E/ffmpeg4android(7781): Check if input file exists: /storage/emulated/0/MicDroid/recordings/video.wav
  
      04-08 10:00:38.896: E/Prefs.TAG(7781): vk run exeption.
  
    04-08 10:00:38.896: E/Prefs.TAG(7781): com.netcompss.ffmpeg4android.CommandValidationException
  
      04-08 10:00:38.896: E/Prefs.TAG(7781):  at com.netcompss.loader.LoadJNI.run(LoadJNI.java:26)
  
    04-08 10:00:38.896: E/Prefs.TAG(7781):    at com.scatta.androidclient.ui.PlaybackScreen$TranscdingBackground.doInBackground(PlaybackScreen.java:159)
  
     04-08 10:00:38.896: E/Prefs.TAG(7781):   at com.scatta.androidclient.ui.PlaybackScreen$TranscdingBackground.doInBackground(PlaybackScreen.java:1)
  
     04-08 10:00:38.896: E/Prefs.TAG(7781):   at android.os.AsyncTask$2.call(AsyncTask.java:287)
  
      04-08 10:00:38.896: E/Prefs.TAG(7781):  at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
  
      04-08 10:00:38.896: E/Prefs.TAG(7781):  at java.util.concurrent.FutureTask.run(FutureTask.java:137)
  
    04-08 10:00:38.896: E/Prefs.TAG(7781):    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
  
     04-08 10:00:38.896: E/Prefs.TAG(7781):   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
  
    04-08 10:00:38.896: E/Prefs.TAG(7781):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
  
   04-08 10:00:38.896: E/Prefs.TAG(7781):     at java.lang.Thread.run(Thread.java:856)

• Is there a fix for the 'flashing console' bug with FFMPEG ?

  29 août 2022, par NedNoodleHead

  When using a compiled a program that utilizes FFMPEG (Not library, but the path to the exe), and a GUI library ; that has a function that uses FFMPEG, a console window from FFMPEG will quickly open and disappear.

  


  I have a github repo that can be used to reproduce the bug : https://github.com/nednoodlehead/ffmpegthreading

  


  I also have a quick youtube video showing what the bug looks like, and what it should look like : https://www.youtube.com/watch?v=tCZ0z9E5Iyw

  


  A few things to note with this :

  


  1). This will only occur when the app is compiled. Running this in a virtual environment works as expected. I run it from my IDE all the time with no console flashing. (as seen in video)

  


  2). It will only flash while a GUI is present. So using a regular script to call the same command that produces the bug will NOT cause the bug

  


  3). The bug was tested in Tkinter and PyQt5 and produced the same result (flashing console)

  


  4). Threading is NOT needed to reproduce this bug, it just makes the debugging a bit easier

  


  5). Using the ffmpeg module does not work as my entire project is based around an interface for PyDub (Which uses ffmpeg)

  


  6). This solution does not work for me : How to hide console output of FFmpeg in Python ? (Because this uses the module, while I use the exe)

  


  7). I am using auto-py-to-exe to compile (which uses pyinstaller)

  


  8). Running 'ffmpeg -version' (in regular cmd (same result in venv)) gives : ffmpeg version N-106605-gf67403edb3-20220413

  


  I would appreciate any help, this is tying my brain up.