Recherche avancée

Sur d’autres sites (7431)

• Video Editing App in Android Studio using Android Media API [closed]

  20 février 2024, par Rayhan Khan

  I want to create a video editing app in android studio. And I want to use Android Media API modules like MediaCodex, MediaMuxer etc. I have already created the app using FFMpeg but it has performance issue in android so I have to migrate the app and use Android Media API.

  


  I have no idea what to do, I have searched online but I don't know why I can't able to find much content about it.

  


  I have also searched about courses on udemy, Lynda, Coursera etc. they also don't have any content.

  


  I just want a to know how and where to start this i don't have much time to explore the Android Developer Docs so please can anyone provide me any article or link to a video, or a course in this regard.

  


• Can't upload huge video to google storage. I using "@ffmpeg-installer/ffmpeg" and @google-cloud/storage

  20 juillet 2022, par Dmytro Petskovych

  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 file.

  


  when I upload video, actually I upload six videos, one for each type resolution

  


  for example when I upload video with duration one hour it split on chunk and totally I get more three thousands 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.');
    }
  };

  


  


  



• Concat same video multiple times failed

  23 juin 2019, par S.T

  i am trying to concatenate the same video multiple times and it fails.

  This is the command i used :
  ffmpeg -i 1.mp4 -i 1.mp4 -i 1.mp4 -filter_complex [0:v:0][0:a:0][1:v:0][1:a:0][2:v:0][2:a:0]concat=n=3:v=1:a=1[concatv][concata] -map [concatv] -map [concata] output.mp4

  The command fails and the error i am getting is :

  Stream specifier ’:a:0’ in filtergraph description [0:v:0][0:a:0][1:v:0][1:a:0][2:v:0][2:a:0]concat=n=3:v=1:a=1[concatv][concata] matches no streams.

  i expect that i will get the same video 3 times, one after one.
  Can someone help ?