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• How can I convert all video type to flv video type by using ffmpeg in c# ?

  7 septembre 2012, par user1575609

  This is part of my C# code.

   if (fileExt != ".flv") {// file extension 
   string SaveADDConvertVideo = Server.MapPath("~/videoFile/Video/") + filename;
  

  ffmpeg.StartInfo.Arguments = " -i " + video + " -ar 22050 -ab 32 -f flv -s 320×240 " + SaveADDConvertVideo + ".flv";

    ffmpeg.StartInfo.FileName = Server.MapPath("ffmpeg.exe");
    ffmpeg.Start(); 
  

  }

  I want to convert any video format to .flv format. But this code doesn't work. I also debug my code very well and there isn't any error. Can any one help me? Tq very much :)

• Use sox to combine audios

  7 septembre 2012, par user1622115

  I have three 3gp file,and I use sox to combine them

  sox --combine sequence C:\1.3gp C:\2.3gp C:\3.3gp C:\newaudio.3gp
  

  but It's show that "FAIL formats:no handler for file extension 3gp"

  Its means that I have to install some extension?

  I'm trying to do it with sox,Can anybody give me any suggestions ?

  Or It's possible do it with ffmpeg ?

• Subtitles and audio track option for Android Native player

  7 septembre 2012, par Balwant Kumar Singh

  How Can I provide the subtitle and audio track change option with Android native player? Do I need to Integrate FFpmeg with the native player? If yes then how I can do this?

  The android version is 3.2

  Kindly reply...

• Node.js Child Process Issue with Args - Quotes Issue ?, FFMPEG issue ?

  7 septembre 2012, par Brad

  I need to be able to execute FFMPEG from my Node.js application. I believe this problem likely has to do with properly specifying command line arguments, and not specific to FFMPEG, but as I have been unable to narrow down the issue, I present my entire problem.

  I can execute the following command from the command prompt successfully:

  C:\Brad\ffmpeg.exe -f dshow -i audio="Microphone (SoundMAX Integrated" testaaa.mp3
  

  FFMPEG starts as expected, records audio from my audio device, and writes an MP3 file. Now, I try to do the same thing within my Node.js application:

  childProcess = child_process.spawn('C:\\Brad\\ffmpeg.exe', ['-f', 'dshow', '-i', 'audio="Microphone (SoundMAX Integrated"', 'testaaa.mp3']);
  childProcess.stderr.on('data', function (data) {
      console.log('StdioSource received data from STDERR: ' + data);
  });
  

  From within Node.js, FFMPEG fails! The error is simply:

  [dshow @ 0000000001eded80] Could not find audio device.
  audio="Microphone (SoundMAX Integrated": Input/output error
  

  Thinking that maybe for some reason this was a weird permissions error, I decided to run FFMPEG with -list_devices true from within my Node application, and sure enough, the device in question is listed:

  [dshow @ 000000000228ecc0] DirectShow video devices
  [dshow @ 000000000228ecc0] Could not enumerate video devices.
  [dshow @ 000000000228ecc0] DirectShow audio devices
  [dshow @ 000000000228ecc0]  "Microphone (SoundMAX Integrated"
  

  Any thoughts as to why I cannot properly specify the audio input device in the arguments for FFMPEG, or why FFMPEG does not recognize my audio input device when running as a child process to Node.js?

  Any hints would be most appreciated.

• Android video don't work - ffmpeg [closed]

  6 septembre 2012, par user1439500

  I have two videos, the first video work in android the second one no, why ?

  (WORK)

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'out.mp4':

  Metadata:

  major_brand     : isom
  minor_version   : 512
  compatible_brands: isomiso2avc1mp41
  encoder         : Lavf52.48.0
  Duration: 00:00:30.00, start: 0.000000, bitrate: 854 kb/s
  Stream #0.0(eng): Video: h264, yuv420p, 800x800 [PAR 4:3 DAR 4:3], 722 kb/s, PAR 533:400 DAR 533:400, 25 fps, 25 tbr, 25 tbn, 50 tbc
  Stream #0.1(eng): Audio: aac, 44100 Hz, stereo, s16, 127 kb/s
  

  (DON'T WORK)

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '2u72rNckWqq.mp4':

  Metadata:

  major_brand     : qt
  minor_version   : 537199360
  compatible_brands: qt
  encoder         : MEncoder Sherpya-SVN-r30075-4.2.5
  Duration: 00:00:30.01, start: 0.000000, bitrate: 857 kb/s
  Stream #0.0(eng): Video: h264, yuv420p, 320x240 [PAR 1:1 DAR 4:3], 724 kb/s, 25 fps, 25 tbr, 1k tbn, 50 tbc
  Stream #0.1(eng): Audio: aac, 44100 Hz, stereo, s16, 128 kb/s