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• bindProcessToNetwork is not working with ffmpeg in android

  12 janvier 2020, par Mithun Sarker Shuvro

  I am using FFmpeg to re stream video from a camera(which is connected via wifi with no internet connection) to another server, and I want to do the re streaming process via cellular data. As I am already connected to wifi and to use cellular data at the same time bindProcessToNetwork() . Before executing ffmpeg command I have done the the following

  final ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
  
  NetworkRequest.Builder req = new NetworkRequest.Builder();
  
  req.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
  
  req.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR);
  
  cm.requestNetwork(req.build(), new ConnectivityManager.NetworkCallback() {
  
      @Override
  
      public void onAvailable(Network network) {
  
          //here you can use bindProcessToNetwork
  
          //cm.getNetworkInfo(network);
  
          if (cm.getNetworkInfo(network).getType() == ConnectivityManager.TYPE_MOBILE) {
  
              cm.bindProcessToNetwork(network);
  
          }
  
      }
  
  
  
  });

  it is working fine in most of the case, like webview is working properly by using cellular data , while connected to wifi , but when I try to execute any ffmpeg command it doesn’t work .

• FFMPEG image resize not working

  8 décembre 2015, par Soundhar Raj

  FFmpeg version 0.6.5 is installed on my web server.

  In my website mp4 videos allowed to upload, that part is done.
  Now i am working on create a thumbnail of the video and then resize it.

  The following links are I referred.

  https://trac.ffmpeg.org/wiki/Create%20a%20thumbnail%20image%20every%20X%20seconds%20of%20the%20video

  https://trac.ffmpeg.org/wiki/Scaling%20(resizing)%20with%20ffmpeg

  This is the command i used to create a thumbnail from video, this command is working.

  $cmd = "ffmpeg -i test.mp4 -ss 0 -vframes 1 out.png";

  After creating the thumbnail, I tried the following the command to resize it, but this is not working.

  $cmd = 'ffmpeg -i out.png -vf scale=210:-1 output_320x240.png';

  And Some other commands i have tried

  $cmd = "ffmpeg -ss 10 -i test.mp4 -vframes 1 -filter scale=-1:150,crop=200:150 output.jpg";
  
  
  
  $cmd = "ffmpeg -itsoffset -1 -i test.mp4 -vframes 1 -filter:v scale=280:-1 output.jpg";

  In my localhost I used the following command to create thumbnail and resize in a single command, but this is also not working in the server.

  $ffmpeg = 'C:\\ffmpeg\\bin\\ffmpeg';
  
  $video = 'test.mp4';
  
  $cmd = "$ffmpeg -itsoffset -1 -i $video -vframes 1 -filter:v scale=\"210:-1\"  thumbnail.png";

  Thanks to all

• ffmpeg working from cmd prompt but not from scheduled job

  19 février 2014, par user2864822

  I've created a simple batch script to convert WAV files to MP3 in a folder on my server.

  When I double-click the script, or call it from a command prompt it works, but when I run it from task scheduler, it doesn't. The job runs under the administrator ID and I can see that it processes the line before and after the ffmpeg call so the job is definitely working, but for some reason the ffmpeg call doesn't seem to be. Instead it says that ffmpeg is not a valid command or filename...

  Do I need to use a different syntax to call ffmpeg in a scheduled script ?

  for %%F in (*.WAV) DO (    
  
    echo ffmpeg -i %%~nF.WAV %%~nF.mp3      
  
    ffmpeg -i %%~nF.WAV %%~nF.mp3    
  
    del %%~nF.WAV     
  
  )