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• checkasm/lpc: use fixed length to bench apply_welch_window

  31 May 2024, by James Almer

  checkasm/lpc: use fixed length to bench apply_welch_window
  Signed-off-by: James Almer <jamrial@gmail.com>
  

  • [DH] tests/checkasm/lpc.c

• avfilter/af_stereotools: check s->length size

  5 December 2015, by Paul B Mahol

  avfilter/af_stereotools: check s->length size
  Signed-off-by: Paul B Mahol <onemda@gmail.com>
  

  • [DH] libavfilter/af_stereotools.c

• how to set output video length from ffmpeg

  25 April 2022, by naval Hurpade

  I'm Creating youtube video downloader using ytdl-core and ffmpeg, I'm able to combine video and audio files using ffmpeg, and files are working fine, but

  


  When I play that video video length (duration) is set to some random number like 212309854
I Already tryied ading -t flag to set time it works but I still video duration as this random number.

  


  See screenshot bellow.
And in video properties I see no length is set.

  


  module.exports = function (audio, video, selectedAudioFormat, selectedVideoFormat,res) {
  
  const ffmpegProcess = spawn(
    ffmpegInstallation.path,
    [
      '-i',
      `pipe:3`,
      '-i',
      `pipe:4`,
      '-map',
      '0:v',
      '-map',
      '1:a',
      '-c:v',
      'copy',
      '-c:a',
      'copy',
      '-crf',
      '27',
      '-preset',
      '6',
      '-movflags',
      'frag_keyframe+empty_moov',
      '-f',
      selectedVideoFormat.container,
      '-t',
      '30',
      '-loglevel',
      'info',
      '-',
    ],
    {
      stdio: ['pipe', 'pipe', 'pipe', 'pipe', 'pipe']
    }
  );
  
  
  video.pipe(ffmpegProcess.stdio[3]);
  audio.pipe(ffmpegProcess.stdio[4]);
  ffmpegProcess.stdio[1]
  .pipe(res);
  
  let ffmpegLogs = '';
  
  ffmpegProcess.stdio[2].on('data', (chunk) => {
    ffmpegLogs += chunk.toString();
  });
  
  ffmpegProcess.on('exit', (exitCode) => {
    if (exitCode === 1) {
      console.error('ERROR IN CHILD ::', ffmpegLogs);
    }
  });