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• Trim video in Android using ffmpeg, audio and video not in sync

  8 novembre 2017, par Nidhin Radh

  I’m creating an Android application which process video files and I’ve used VideoKit library (https://github.com/inFullMobile/videokit-ffmpeg-android) to integrate ffmpeg with the application.
  I used the following snippet to trim a video,

                      Command command= videoKit.createCommand()
  
                                      .overwriteOutput()
  
                                      .inputPath(ipfile.getAbsolutePath())
  
                                      .outputPath(opfile.getAbsolutePath())
  
                                      .customCommand("-ss 10 -t 30 -vcodec "+ 
  
                                       "copy -acodec copy -async 1")
  
                                      .copyVideoCodec()
  
                                      .experimentalFlag()
  
                                      .build();
  
                              command.execute();

  Sometimes the output seems to be okay, but sometimes the video and audio are not in sync, i.e. video ends before audio. Most of the time this happens with videos downloaded from YouTube.
  Can someone give me an idea to trim videos in android without any problems ?

• ffmpeg play short video during playing another video

  10 mai 2016, par Szymek Świderski

  I want put and play scrap of short video during play another video in ffmpeg. I use this : ffmpeg -i 0.mp4 -i "prawo.mp4" -filter_complex "blend=all_mode='heat':all_opacity=0.3" output.mp4

  and i get this :

  First input link top parameters (size 1280x720, SAR 0:1) do not match the corresponding second input link bottom parameters (1920x1080, SAR 1:1)

  What should i do ? Any help ?

• Command of FFMPEG to make a video from Image(JPEG) + Audio(.mp3) & Share video in Whatsapp

  22 novembre 2018, par Neel Mevada

  I am trying to create a video .mp4 file from .mp3 audio & .jpeg image.

  I am able to make a video and able to play in Video Players in Android devices.

  But after creation of file when i tried to Share that Video in Whatsapp, at that time it shows a message "The file format not supported".

  I am using below FFMPEG Command :

  "-loop 1 -r 1 -i " + imageFilePath + " -i " + audioFilePath + " -c:v libx264 -crf 27 -tune stillimage -c:a copy -pix_fmt yuv420p -preset ultrafast -shortest " + pathOutputVideo(sectionName);

  And for Sharing video , i am using below Code :

    MediaScannerConnection.scanFile(ShareQuestionAudioActivity.this, new String[]{FfmpegController.pathOutputVideo(qModel.getSectionName().toUpperCase().replaceAll(" ", "_"))},
  
                  null, new MediaScannerConnection.OnScanCompletedListener() {
  
                      public void onScanCompleted(String path, Uri uri) {
  
                          Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND);
  
                          shareIntent.setType("video/*");
  
                          shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse(FfmpegController.pathOutputVideo(qModel.getSectionName().toUpperCase().replaceAll(" ", "_"))));
  
                          startActivity(Intent.createChooser(shareIntent, "Share Question"));
  
                      }
  
                  });

  From this Link I found that i need to use H264 + AAC. but still not able to share video with supported file format