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• JavaCV ffmpeg video/audio not syncing

  3 janvier 2024, par lukaking98

  i have cut two videos into multiple segments and i am trying to rearangle them randomly. The problem is that the audio wont sync properly... All the segments have the same frame rate, 30 fps, same resolution, same audio and video codec (AV_CODEC_ID_AAC, AV_CODEC_ID_H264) and same bitrate.

  


                  FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(outputFilePath, 1920, 1080);
                recorder.setFrameRate(30); 
                recorder.setFormat("mp4");              

                recorder.setAudioChannels(2); 
                recorder.setSampleRate(44100); 
                recorder.setAudioCodec(avcodec.AV_CODEC_ID_AAC); 
                recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
                recorder.setVideoBitrate(10_000_000); 

                recorder.start(); 
                
                Frame videoFrame;
                for (FFmpegFrameGrabber videoGrabber : videoGrabbers) {
                    videoGrabber.start();
                    while ((videoFrame = videoGrabber.grabFrame(true, true, true, false)) != null) { 
                        recorder.record(videoFrame);
                    }                                   
                }
                recorder.stop();
                recorder.release();  


  


  if i enable grabFrame boolean doAudio to true, the video would be 43s, if i disable the audio it would be 34s.
Also at the end the video ends at 34s and the audio continues until it finishes.

  


  Any way i can sync this so the audio matches the video perfectly ??

  


• Using FFMPEG with Cookies ? jsessionid ? [closed]

  12 juin 2024, par mario anne

  Sorry if I just missed the answers but I have searched for one and a half hour already. I want to use FFmpeg to download a video. But it doesn't work. I got the following link :
" https://streaming.magentamusik.de/csm/live/141580688/6.m3u8 ;jsessionid=8FC831D877B0B49D91525B7D5B71C62B.csm-e-ces1aeuw1live102-0f371de46adbfb70f.tls1.yospace.com?yo.aas=streamingmagentamusic360-eb.tls1&yo.up=https://streaming.magentamusik.de/hls/live/573870/magentamusik1/&yo.eb.fb=aHR0cHM6Ly9zdHJlYW1pbmcubWFnZW50YW11c2lrLmRlL2hscy9saXZlLzU3Mzg3MC9tYWdlbnRhbXVzaWsxL2luZGV4Lm0zdTg&yo.ac=true&yo.pdt=sync&yo.av=3&yo.po=3&iOS_QS=1&yo.ac=true&yo.pdt=sync&yo.av=3&externalId=magentamusik1
"
but "ffmpeg -i https://streaming.magentamusik.de/csm/live/141580688/6.m3u8 ;jsessionid=8FC831D877B0B49D91525B7D5B71C62B.csm-e-ces1aeuw1live102-0f371de46adbfb70f.tls1.yospace.com?yo.aas=streamingmagentamusic360-eb.tls1&yo.up=https://streaming.magentamusik.de/hls/live/573870/magentamusik1/&yo.eb.fb=aHR0cHM6Ly9zdHJlYW1pbmcubWFnZW50YW11c2lrLmRlL2hscy9saXZlLzU3Mzg3MC9tYWdlbnRhbXVzaWsxL2luZGV4Lm0zdTg&yo.ac=true&yo.pdt=sync&yo.av=3&yo.po=3&iOS_QS=1&yo.ac=true&yo.pdt=sync&yo.av=3&externalId=magentamusik1 -c copy outputfile.mp4"
doesn't work.

  


  Please help me. Even just pointing to a direction I could look into would be nice.

  


  I tried downloading a video, but failed as it returns "HTTP error 404 Not Found".

  


• ffmpeg screen capture using screen-capture-recorder cmd not working in vb

  14 juin 2014, par user3234288

  I’ve started ffmpeg as process in VB but ffmpeg cmd for capturing alone is not working. My code is,I don’t know how to solve the problem, if any help greatly appreciated

  proc.StartInfo.FileName = System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) & "\converter\bin\ffmpeg.exe"            
  
  proc.StartInfo.Arguments = "-f dshow -i video=screen-capture-recorder screen.mp4"
  
  proc.StartInfo.UseShellExecute = False
  
  proc.StartInfo.WindowStyle = ProcessWindowStyle.Hidden
  
  proc.StartInfo.RedirectStandardInput = True
  
  proc.StartInfo.RedirectStandardOutput = True
  
  proc.StartInfo.CreateNoWindow = True
  
  proc.Start()