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• Image mask blur processing problem using ffmpeg

  16 avril 2024, par andrew kim

  I want to apply blur using masking to two or more points in the image. I want to use a circular or other type of blur in ffmpeg rather than a box blur. I wrote the ffmpeg code, but an error continued. When there is only one blur, it works correctly, but when there are two or more blurs, an error occurs. No matter how much I search, I can't figure it out, so I'd like to ask for help.

  


  The ffmpeg code I wrote is as follows.

  


  ffmpeg -i input.mp4 -i mask.png -filter_complex "`
[1:v]scale=200:200,pad=1920:1080:(ow-iw)/1:(oh-ih)/1[pmask1]; `
[1:v]scale=200:200,pad=1920:1080:(ow-iw)/3:(oh-ih)/3[pmask2]; `
[0:v][pmask1]alphamerge,avgblur=10[alf];[0:v][alf]overlay[temp1]; `
[temp1][pmask2]alphamerge,avgblur=10[alf2];[temp1][alf2]overlay[v] `
"-map "[v]" -map 0:a -c:v libx264 -c:a copy -movflags +faststart maskedblur.mp4


  


  The error is as follows.

  


  [mov,mp4,m4a,3gp,3g2,mj2 @ 0000026ed1d4a500] Invalid stream specifier: temp1.
    Last message repeated 1 times
[fc#0 @ 0000026ed1cdc280] Stream specifier 'temp1' in filtergraph description
[1:v]scale=200:200,pad=1920:1080:(ow-iw)/1:(oh-ih)/1[pmask1];
[1:v]scale=200:200,pad=1920:1080:(ow-iw)/3:(oh-ih)/3[pmask2];
[0:v][pmask1]alphamerge,avgblur=10[alf];[0:v][alf]overlay[temp1];
[temp1][pmask2]alphamerge,avgblur=10[alf2];[temp1][alf2]overlay[v]
 matches no streams.
Error initializing complex filters: Invalid argument


  


• Revision 8b175679be : Masking intra mode choice adaptively The commit changes to mask available intra

  11 octobre 2013, par Yaowu Xu

  Changed Paths :
   Modify /vp9/encoder/vp9_onyx_if.c

  
   Modify /vp9/encoder/vp9_onyx_int.h

  
   Modify /vp9/encoder/vp9_rdopt.c

  
  
  Masking intra mode choice adaptively

  The commit changes to mask available intra prediction modes for test
  based on prediction block size.

  With this patch, encoding time of CpuUsed 2 reduces from 10% to 20% for
  HD clips with a compression drop of 0.2%

  Change-Id : I65f320f1237c0f5ae3a355bf7caf447f55625455

• Can't upload folder with large amount of files to google storage. I using "@ffmpeg-installer/ffmpeg" and @google-cloud/storage

  20 juillet 2022, par Dmytro

  I upload file to google storage using "@ffmpeg-installer/ffmpeg" and @google-cloud/storage in my node.js App.
Step 1. file uploading to fs is in child processes - one process for each type of resolution (totaly six).
step 2. encription (converting to stream)
step 3. upload to google storage

  


  I use "Upload a directory to a bucket" in order to send the video from the client to the Google Cloud Storage bucket.

  


  This way is working fine only with small video.

  


  for example when I upload video with duration one hour it split on chunk and totally I get more three thousands files. But the problem occurs when there are more than 1500 files

  


  So actually i upload folder with large amount of files, but not all of this files are uploaded to cloud.

  


  maybe someone had the similar problem and helps fix it.

  


  


  


  const uploadFolder = async (bucketName, directoryPath, socketInstance) => {
    try {
      let dirCtr = 1;
      let itemCtr = 0;
      const fileList = [];

      const onComplete = async () => {
        const folderName = nanoid(46);

        await Promise.all(
          fileList.map(filePath => {
            const fileName = path.relative(directoryPath, filePath);
            const destination = `${ folderName }/${ fileName }`;

            return storage
              .bucket(bucketName)
              .upload(filePath, { destination })
              .then(
                uploadResp => ({ fileName: destination, status: uploadResp[0] }),
                err => ({ fileName: destination, response: err })
              );
          })
        );

        if (socketInstance) socketInstance.emit('uploadProgress', {
          message: `Added files to Google bucket`,
          last: false,
          part: false
        });

        return folderName;
      };

      const getFiles = async directory => {
        const items = await fs.readdir(directory);
        dirCtr--;
        itemCtr += items.length;
        for(const item of items) {
          const fullPath = path.join(directory, item);
          const stat = await fs.stat(fullPath);
          itemCtr--;
          if (stat.isFile()) {
            fileList.push(fullPath);
          } else if (stat.isDirectory()) {
            dirCtr++;
            await getFiles(fullPath);
          }
        }
      }

      await getFiles(directoryPath);

      return onComplete();
    } catch (e) {
      log.error(e.message);
      throw new Error('Can\'t store folder.');
    }
  };