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• RTMP_ReadPacket, failed to read RTMP packet header

  14 juin 2018, par Dilivio Cat

  I am trying to livestream a 24/7 looping stream from my Ubuntu server to youtube.

  I have a gif that is looping and my music gets shuffled from a music list.

  for i in ./*.mp3 ; do echo "file '$i'" ; done | shuf >mp3list.txt ffmpeg -f 
  
  concat -i mp3list.txt -fflags +genpts -ignore_loop 0 -i giffilename.gif -f 
  
  flv rtmp://a.rtmp.youtube.com/live2/(mykeyhere)

  But I am getting this error when I run my script :

  RTMP_ReadPacket, failed to read RTMP packet header : Unknown error
  occutredm/live2/(mykeyhere)

  I did some research, but couldn’t find anything about this specific error. I opened port 1935 and it did not change anything.

  The OS is Ubuntu 16.04 on a VPS.
  Thanks for your help,

  Dilie

• How to cut and concatenate the file so it is not off-beat when the file I got the bpm from is being muxed ?

  27 janvier 2017, par P. Dee

  I am cutting files with ffmpeg based on the bpm I found in a music file. So let’s assume, the file’s bpm = 120. That means, there are 2 bps and 1 beat every 500ms.

  So I cut a video file with multiples of 500ms length, ie 500ms, 1500ms, 3000ms etc. length. But cutting it using

  ffmpeg -ss start -i fileorig.mp4 -t duration part_number.mp4

  and finally creating a mylist.txt with

  file 'part_1.mp4'
  
  file 'part_2.mp4'
  
  ...

  and adding them via

  ffmpeg -f concat -i mylist.txt -c copy output.mp4

  and replacing the audio track with the music file, makes the video be off-beat after some time.

  How to cut and concatenate the file so it is not off-beat when the file I got the bpm from is being muxed ?

• How to duplicate an audio file or trim it to a specific length in ffmpeg ?

  21 octobre 2023, par Руслан Лысенко

  I want to combine a video file (with audio) and an audio file together to get one output file.

  


  Most importantly, I need to do the following.

  


  If the length of the video file is longer, then you need to increase the length of the audio file to this length.

  


  If the audio file is longer than the video file, then make the audio file shorter to match the length of the video.

  


  Example :

  


  Video 2 minutes 5 seconds

  


  Audio 1 minute -> duplicated to 2 minutes 5 seconds.

  


  If

  


  Video 1 minute

  


  Audio 2 minutes 5 seconds -> trimmed to 1 minute.

  


  But, I can't even increase the length of the audio file.

  


  export async function overlayAudio(id: number, music: Music) {
  console.log('start')
  const videoPath = path.join(__dirname, `../../../uploads/movie/${id}/result/movie/predfinal.mp4`);
  
  if (music === null) {
    return videoPath.match(/\\uploads(.*)/)[0];
  } else {
    const audioPath = path.join(__dirname, `../../../${music.audio}`);
    const outputVideoPath = path.join(__dirname, `../../../uploads/movie/${id}/result/movie/output.mp4`);
    const matchPath = outputVideoPath.match(/\\uploads(.*)/);
    const cmd = `ffmpeg -i ${videoPath} -i ${audioPath} -filter_complex "[0:a]volume=1[a];[1:a]volume=0.2[b];[b]apad[looped_audio];[a][looped_audio]amix=inputs=2:duration=longest" -c:v copy -c:a aac -strict experimental -shortest ${outputVideoPath}`;

    try {
      await execPromise(cmd);
      console.log('end!')
      return matchPath[0];
    } catch (error) {
      console.error('Error:', error);
      throw error;
    }
  }
}