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• Best way to upgrade FFMPEG library upgrade ? [closed]

  1er février 2024, par Code_Life

  Background context : We are using FFMPEG 3.4 on iOS & Android apps to playback our RTSP streams and are planning to upgrade to the latest version which is 6.x

  


  Problem Statement : I want to minimize the risk(& effort) in development and testing as we have a large of devices which generate the stream.

  


  Question :

  


  


  1. Any suggestion or experience on upgrading ? Do's and Don't

     


  


  2. One of the thoughts is to add two versions of FFMPEG lib and validate each device's performance by doing A/B testing over time. But I'm not sure if that is technically possible as both dependencies will conflict.

     


  


  3. Has anyone tried the Multiplatform approach ?

     


  


  


• How to integrate a video editor into a web application [on hold]

  20 juin 2016, par Nick Lynch

  I am looking to figure out how to integrate a video editor into an application i’m building, using php (laravel 5).

  I am experienced in php development, and how to play and other front-side aspects of video, but I cannot find much on how to actually edit video on the server side. I have found FFMPEG or Kaltura may be the way to go, but i have found very little about those or if they are the right tools.

  Please let me know the best way to actually implement a video editor into my app

  Thank you !!!

• 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"
  
      };