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• Want to send a video from desktop to Wowza using ffmpeg

  3 mars 2018, par ST94

  I am trying to stream a local .mp4 video file from my laptop to Wowza Streaming Engine using ffmpeg. Both systems are able to ping each other. I give the following command on my laptop

  ffmpeg -re -i bunny_1080p_60fps_normal.mp4 -vcodec libx264 -acodec aac -ar 48000 -strict experimental -f flv "rtmp://192.168.1.22:1935/live/myStream"

  192.168.1.22 is the IP address of Wowza server residing on another system running Ubuntu 17.04.

  I see the following on the command prompt of my laptop when I give the above command,

  ffmpeg version N-89894-g18e2ac032e Copyright (c) 2000-2018 the FFmpeg developers
  
    built with gcc 7.2.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libmfx --enable-amf --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth
  
    libavutil      56.  7.100 / 56.  7.100
  
    libavcodec     58.  9.100 / 58.  9.100
  
    libavformat    58.  5.101 / 58.  5.101
  
    libavdevice    58.  0.101 / 58.  0.101
  
    libavfilter     7. 11.101 /  7. 11.101
  
    libswscale      5.  0.101 /  5.  0.101
  
    libswresample   3.  0.101 /  3.  0.101
  
    libpostproc    55.  0.100 / 55.  0.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'bunny_1080p_60fps_normal.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 1
  
      compatible_brands: isomavc1
  
      creation_time   : 2013-12-16T17:59:32.000000Z
  
      title           : Big Buck Bunny, Sunflower version
  
      artist          : Blender Foundation 2008, Janus Bager Kristensen 2013
  
      comment         : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net
  
      genre           : Animation
  
      composer        : Sacha Goedegebure
  
    Duration: 00:10:34.53, start: 0.000000, bitrate: 4486 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 4001 kb/s, 60 fps, 60 tbr, 60k tbn, 120 tbc (default)
  
      Metadata:
  
        creation_time   : 2013-12-16T17:59:32.000000Z
  
        handler_name    : GPAC ISO Video Handler
  
      Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 48000 Hz, stereo, s16p, 160 kb/s (default)
  
      Metadata:
  
        creation_time   : 2013-12-16T17:59:37.000000Z
  
        handler_name    : GPAC ISO Audio Handler
  
      Stream #0:2(und): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side), fltp, 320 kb/s (default)
  
      Metadata:
  
        creation_time   : 2013-12-16T17:59:37.000000Z
  
        handler_name    : GPAC ISO Audio Handler
  
      Side data:
  
        audio service type: main
  
  [rtmp @ 000001ed7c4108c0] No credentials set
  
  [rtmp @ 000001ed7c4108c0] Server error: [ AccessManager.Reject ] : [ code=403 need auth; authmod=adobe ] :
  
  rtmp://192.168.1.22:1935/live/myStream: Unknown error occurred

  Can anyone please tell me what the exact procedure is to stream a video file to Wowza .

  How will I be able to view the stream at Wowza ?

• Why does FFMPEG report the wrong duration ?

  7 janvier 2020, par Adrian Lynch

  I have an oldish build of FFmpeg that I can’t easily change.

  We use FFmpeg to find the duration of video and sound files. So far it has been working wonderfully.

  Recently on an uploaded file, FFmpeg has reported a 30 second file as being 5 minutes 30 seconds in length.

  Could it be something wrong with the file rather than FFmpeg ?

  If I use FFmpeg to convert to another file, the duration is restored.

  In case it matters, ffmpeg -i ’path to the file’ produces :

  FFmpeg version Sherpya-r15618, Copyright (c) 2000-2008 Fabrice Bellard, et al.
    libavutil     49.11. 0 / 49.11. 0
    libavcodec    52. 0. 0 / 52. 0. 0
    libavformat   52.22. 1 / 52.22. 1
    libavdevice   52. 1. 0 / 52. 1. 0
    libswscale     0. 6. 1 /  0. 6. 1
    libpostproc   51. 2. 0 / 51. 2. 0
    built on Oct 14 2008 23:43:47, gcc : 4.2.5 20080919 (prerelease) [Sherpya]
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ’H :\path\to\file.mov’ :
    Duration : 00:05:35.00, start : 0.000000, bitrate : 1223 kb/s
      Stream #0.0(eng) : Audio : aac, 44100 Hz, stereo, s16
      Stream #0.1(eng) : Video : h264, yuv420p, 720x576, 25.00 tb(r)
  Must supply at least one output file
  

  It’s that very command I use to then extract the duration with RegEx.

  Does anyone have a nice application that can do what I’m trying above but get it right 100% of the time ?

• ffmpeg extracting frames from video

  22 novembre 2017, par TheOtherguyz4kj

  I am using Writingminds FFmpeg to use FFmpeg with Android. I am currently trying to extract frames from a video.

  I would like to extract 8 frames from the video evenly distributed throughout the video. I found this tutorial here is my implementation of it.

  MediaMetadataRetriever retriever = new MediaMetadataRetriever();
  
      retriever.setDataSource(videoCroppedFile.getAbsolutePath());
  
      String time = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);
  
      Long videoLength = Long.parseLong(time);
  
  
  
  
  
  final String cmd[] = {
  
  
  
              "-i",
  
              videoCroppedFile.getAbsolutePath(),
  
              "-f",
  
              "image2",
  
              "-ss",
  
              String.valueOf(videoLength.intValue() / ((8 + 1) * 10)),
  
              "-r",
  
              String.valueOf((8 + 1) / videoLength.intValue()),
  
              mediaStorageDir.getAbsolutePath() + "/%d.jpg"
  
      };

  However, when i go to the folder where the frames should be saved there isn’t anything there. Also there are no error messages.

  I feel like its a way this library takes the String parameters. I’ve been stuck on this for sometime I have tried lots of different versions of the cmd. I was hoping someone could help.

  Here is my output from ffmpeg :

  1-22 19:33:14.904 30981-30981/com.firebase.android D/videoFrames:  failure reason ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  
           built with gcc 4.8 (GCC)
  
           configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
           libavutil      55. 17.103 / 55. 17.103
  
           libavcodec     57. 24.102 / 57. 24.102
  
           libavformat    57. 25.100 / 57. 25.100
  
           libavdevice    57.  0.101 / 57.  0.101
  
           libavfilter     6. 31.100 /  6. 31.100
  
           libswscale      4.  0.100 /  4.  0.100
  
           libswresample   2.  0.101 /  2.  0.101
  
           libpostproc    54.  0.100 / 54.  0.100
  
         Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/data/user/0/com.firebase.android/cache/videovgntp6q5ar4dglkaflaoobfpcv945824159.mp4':
  
           Metadata:
  
             major_brand     : isom
  
             minor_version   : 512
  
             compatible_brands: isomiso2avc1mp41
  
             encoder         : Lavf57.25.100
  
           Duration: 00:00:08.28, start: 0.000000, bitrate: 391 kb/s
  
             Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 720x764 [SAR 1:1 DAR 180:191], 132 kb/s, 16.67 fps, 16.67 tbr, 12800 tbn, 33.33 tbc (default)
  
             Metadata:
  
               handler_name    : VideoHandler
  
             Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 256 kb/s (default)
  
             Metadata:
  
               handler_name    : SoundHandler
  
         Invalid framerate value: 0

  Update 2

  Here is my Android code :

        try {
  
          ffmpeg.loadBinary(new LoadBinaryResponseHandler() {
  
  
  
              @Override
  
              public void onStart() {
  
                  Log.d("videoFrames", "starting to load binary");
  
              }
  
  
  
              @Override
  
              public void onFailure() {
  
                  Log.d("videoFrames", "failed to load binary");
  
              }
  
  
  
              @Override
  
              public void onSuccess() {
  
                  Log.d("videoFrames", "loaded binary");
  
                  try {
  
                      ffmpeg.execute(cmd, new ExecuteBinaryResponseHandler() {
  
  
  
                          @Override
  
                          public void onStart() {
  
                              Log.d("videoFrames", " starting to get frames from video");
  
                              if (mediaStorageDir.isDirectory() && mediaStorageDir.list().length > 0) {
  
                                  String[] children = mediaStorageDir.list();
  
                                  for (int i = 0; i < children.length; i++) {
  
                                      new File(mediaStorageDir, children[i]).delete();
  
                                  }
  
                              }
  
                          }
  
  
  
                          @Override
  
                          public void onProgress(String message) {
  
                              Log.d("videoFrames", " progress getting frames from video");
  
                          }
  
  
  
                          @Override
  
                          public void onFailure(String message) {
  
                              Log.d("videoFrames", " failed to get frames from video");
  
                              Log.d("videoFrames", " failure reason " + message);
  
                              Log.d("videoFrames", " ----------------------------------------------- ");
  
                          }
  
  
  
                          @Override
  
                          public void onSuccess(String message) {
  
                              Log.d("videoFrames", " success getting frames from video");
  
                          }
  
  
  
                          @Override
  
                          public void onFinish() {
  
                              Log.d("videoFrames", " finished getting frames from video");
  
                          }
  
                      });
  
                  } catch (FFmpegCommandAlreadyRunningException e) {
  
                      Log.d("videoFrames", " command already running in fmpeg");
  
                      e.printStackTrace();
  
                  }
  
              }
  
  
  
              @Override
  
              public void onFinish() {}
  
          });
  
      } catch (FFmpegNotSupportedException e) {
  
          // Handle if FFmpeg is not supported by device
  
      }

  Update 3

  I fixed my code by doing :

   final String cmd[] = {
  
  
  
              "-i",
  
              videoCroppedFile.getAbsolutePath(),
  
              "-f",
  
              "image2",
  
              "-ss",
  
              String.valueOf(videoLength.floatValue() / (8.0  * 10.0)),
  
              "-r",
  
              String.valueOf(8.0 / videoLength.floatValue()),
  
              mediaStorageDir.getAbsolutePath() + "/%d.jpg"
  
      };