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• Empty error object produced by ffprobe in Google Cloud Function

  20 septembre 2023, par willbattel

  Update : After more digging I found an open GitHub issue where others appear to be encountering the same behavior.

  


  ---

  


  I have a Google Cloud Function (2nd gen) in which I am trying to use ffprobe to get metadata from a video file stored in a Google Cloud Storage bucket. It is my understanding that I can generate a signed url and, by passing that directly to ffprobe, avoid loading the entire video file into memory. I generate a signed url and pass it to ffprobe, and then parse the output like so :

  


  import ffmpeg from 'fluent-ffmpeg'
import ffprobeStatic from 'ffprobe-static'

async function getVideoData(srcFile: File) {
    const [signedUrl] = await srcFile.getSignedUrl({
        action: 'read',
        expires: (new Date()).getMilliseconds() + 60_000,
    })

    const videoData: ffmpeg.FfprobeData = await new Promise((resolve, reject) => {
        ffmpeg.setFfprobePath(ffprobeStatic.path)
        ffmpeg.ffprobe(signedUrl, (err, data) => {
            if (err) {
                reject(err)
            }
            else {
                resolve(data)
            }
        })
    })

    return videoData
}


  


  This code works (with the same signed URL) locally on my macOS machine, but does not when deployed in a 2nd generation Google Cloud Function. In the latter case, data is undefined and err is {}.

  


  My main question is how to properly use ffprobe in 2nd gen Google Cloud Functions. I have tried to research this but documentation on ffmpeg/ffprobe on GCP is sparse. I'm also trying to figure out exactly why the error object err is empty...it's not very helpful 😅

  


  Additional info :

  


  

  • Environment : Google Cloud Functions 2nd Gen

  


  • Runtime : Node 20

  


  • "ffprobe-static" : "3.1.0",

  


  • "fluent-ffmpeg" : "2.1.2"

  


  


  Thanks in advance.

  


• Firebase cloud function fluent-ffmpeg resize and convert

  16 août 2023, par Romeo

  In the firebase cloud functions I upload a video in .webm format, I want to resize it and convert it to .mp4.
I am able to generate a file, and reupload the generated file to the firebase storage bucket.

  


  Problem is : the file is unreadable.
How can I assess the file integrity and attributes before and after conversion ?

  


  this is the code of my firebase cloud function :

  


  /**
 * When a video is uploaded in the Storage bucket,
 * generate a resizing and if it's a webm file convert in mp4.
 */

export const resizeVideo = functions.storage.object().onFinalize(async (object) => {
  console.log(`Processing file: ${object.name}`);
  const tempFilePath = path.join(os.tmpdir(), object.name + "");
  const resizedTempFilePath = path.join(os.tmpdir(), "resized_" + object.name?.replace("webm", "mp4"));
  if (object.name?.includes("resized_")) {
    console.log("Already resized");
    return false;
  }
  return new Promise(()=>{
    ffmpeg(tempFilePath)
    .format("mp4")
    .toFormat("mp4")
    .size("1920x1080")
    .videoCodec("libx264")
    .audioCodec("aac")
    .audioBitrate("128k")
    .audioChannels(2)
    .withAudioBitrate("128k")
    .withAudioChannels(2)
    .withAudioCodec("aac")
    .withVideoCodec("libx264")
    .withVideoBitrate("1000k")
    .withSize("1920x1080")
    .outputOptions([
      '-c:v libx264',
      '-c:a aac',
      '-pix_fmt yuv420p',
      '-profile:v main',
      '-level 3.1',
      '-movflags +faststart',
      '-max_muxing_queue_size 9999',
    ])
    .output(resizedTempFilePath)
    .save(resizedTempFilePath)
    .on("error", function(err: { message: any; }, stdout: any, stderr: any) {
      console.log("Error on resize ", err.message);
      console.log("stdout ", stdout);
      console.log("stderr ", stderr);
    })
    .on("end", function() {
      console.log("Finished resizing! ", resizedTempFilePath);
      fs.readdirSync(os.tmpdir()).forEach((file) =>{
        if (file === ("resized_" + object.name?.replace("webm", "mp4"))){
          console.log(`${resizedTempFilePath} created!`);
          admin.storage().bucket().upload(path.join(os.tmpdir(), "resized_" + object.name), {
            destination: "resized_" + object.name?.replace("webm", "mp4"),
            metadata: {
              contentType: "video/mp4",
            },
          }).then(() => {
            console.log(`Uploaded ${resizedTempFilePath}`);
          }
          ).catch((err) => {
            console.log(`Error on upload ${resizedTempFilePath}`, err);
          }
          );
        }
      });
    });
  });
});


  


• Convert webm to mp4 on with spawn ffmpeg on firebase cloud function returning failed with code 1

  11 novembre 2022, par findev

  In a google cloud function, i'm trying to convert a donwloaded .webm file from cloud storage to .mp4 format with this code

  


  var mp4FilePath = path.join(os.tmpdir(), mediaId+'.mp4')
await spawn('ffmpeg', [
    '-i',
    downloadedFilePath,
    '-c copy',
    mp4FilePath,
]); 


  


  I keep receiving the following error

  


  Error: `ffmpeg -i /var/folders/h2/p35j0p3s4zq9ktyqhdx3qb9h0000gn/T/ghE1HQP1x9m2XLaxEx43_raw.webm -c copy /var/folders/h2/p35j0p3s4zq9ktyqhdx3qb9h0000gn/T/test.mp4` failed with code 1


  


  I'm able to create thumbnails so the source file is downloaded correctly.