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• google function : TypeError : Cannot read property 'name' of undefined

  9 décembre 2019, par Juggernaught

  I’m trying to use Google cloud function to transcode videos from a storage bucket and outputs into another bucket using code posted online but with a few adjustments.

  but I get the following error :

  TypeError : Cannot read property ’name’ of undefined at transcodeVideo
  (/srv/index.js:17:56) at /worker/worker.js:825:24 at at
  process._tickDomainCallback (internal/process/next_tick.js:229:7)

  Index.js

  const {Storage} = require('@google-cloud/storage');
  
  const projectId = 'cc18-223318';
  
  const storage = new Storage({
  
      projectId: projectId,
  
  });
  
  const ffmpegPath = require('@ffmpeg-installer/ffmpeg').path;
  
  const ffmpeg = require('fluent-ffmpeg');
  
  
  
  const transcodedBucket = storage.bucket('2400p');
  
  const uploadBucket = storage.bucket('inpuut');
  
  ffmpeg.setFfmpegPath(ffmpegPath);
  
  
  
  exports.transcodeVideo = function transcodeVideo(event, callback) {
  
    const file = event.data;
  
    // Ensure that you only proceed if the file is newly created, and exists.
  
    if (file.metageneration !== '1' || file.resourceState !== 'exists') {
  
      callback();
  
      return;
  
    }
  
  
  
    // Open write stream to new bucket, modify the filename as needed.
  
    const remoteWriteStream = transcodedBucket.file(file.name.replace('.webm', '.mp4'))
  
      .createWriteStream({
  
        metadata: {
  
          metadata: file.metadata, // You may not need this, my uploads have associated metadata
  
          contentType: 'video/mp4', // This could be whatever else you are transcoding to
  
        },
  
      });
  
  
  
    // Open read stream to our uploaded file
  
    const remoteReadStream = uploadBucket.file(file.name).createReadStream();
  
  
  
    // Transcode
  
    ffmpeg()
  
      .input(remoteReadStream)
  
      .outputOptions('-c:v libx264') // Change these options to whatever suits your needs
  
      .outputOptions('-c:a copy')
  
      .outputOptions('-vf "scale=4800:2400"')
  
      .outputOptions('-b:a 160k')
  
      .outputOptions('-b:a 160k')
  
      .outputOptions('-x264-params mvrange=511')
  
      .outputOptions('-f mp4')
  
      .outputOptions('-preset slow')
  
      .outputOptions('-movflags frag_keyframe+empty_moov')
  
      .outputOptions('-crf 18')
  
      // https://github.com/fluent-ffmpeg/node-fluent-ffmpeg/issues/346#issuecomment-67299526 
  
      .on('start', (cmdLine) => {
  
        console.log('Started ffmpeg with command:', cmdLine);
  
      })
  
      .on('end', () => {
  
        console.log('Successfully re-encoded video.');
  
        callback();
  
      })
  
      .on('error', (err, stdout, stderr) => {
  
        console.error('An error occured during encoding', err.message);
  
        console.error('stdout:', stdout);
  
        console.error('stderr:', stderr);
  
        callback(err);
  
      })
  
      .pipe(remoteWriteStream, { end: true }); // end: true, emit end event when readable stream ends
  
  };

• ffmpeg : how add constant color margin to a video

  24 octobre 2017, par علیرضا

  i have a video and i want to add a black background padding to top and bottom of the video to getting a square output.
  
  is it possible to do this with ffmpeg ?

• vf_lut : correct color/comp permutation

  27 février 2013, par Michael Niedermayer

  vf_lut : correct color/comp permutation