Recherche avancée

Sur d’autres sites (7930)

• Detect face in video file

  24 juin 2017, par Yaswanth Pushpak

  My code is to detect face in a video, but the video is not being loaded even I have given the right path. Also, I installed ffmpeg but there are no .dll files in it.

  Can anyone help ?

  import cv2
  
  
  
  import numpy as np
  
  
  
  faceDetect=cv2.CascadeClassifier('C:\\OPENCV\\opencv\\sources\\data\\haarcascades\\haarcascade_frontalface_default.xml')
  
  
  
  ret,cam=cv2.VideoCapture('D:\\New folder (5)\\New folder (3)\\Ae Dil Hai Mushkil.mp4')
  
  
  
  img=cam.read()
  
  
  
  while(cam.isOpened()):
  
  
  
  ret,img=cam.read();
  
  
  
  if not ret: break
  
  
  
  gray=cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
  
  
  
   faces=faceDetect.detectMultiScale(gray,1.3,5);
  
  
  
      `enter code here`for (x,y,w,h) in faces:
  
          cv2.rectangle(img,(x,y),(x+w,y+h),(0,255,0),2)
  
      cv2.imshow("Face",img);
  
      if(cv2.waitKey(1) & 0xFF==ord('q')):
  
          break;
  
  
  
  cam.release()
  
  cv2.destroyAllWindows()

  Error :

  Traceback (most recent call last):
  
    File "D:\New folder (5)\New folder (3)\facedet.py", line 5, in <module>
  
      ret,cam=cv2.VideoCapture('D:\\New folder (5)\\New folder (3)\\Ae Dil Hai Mushkil.mp4')
  
  TypeError: 'cv2.VideoCapture' object is not iterable
  
  </module>

• convert mkv to mp4 before uploading it to aws

  21 mai 2021, par Sambhav jain

  there is a videofile which is in mkv format and getting upload to aws but i want to convert it to mp4 first and then upload. is there a way to convert mkv to mp4

  


  handleUpload() {
    for (let i = 0; i < this.files.length; i++) {
      this.awsUploadService
        .getSignedUrlS3(this.files[i]["name"], this.files[i]["type"])
        .subscribe(
          ({ url, keyFile }) => {
            this.awsUploadService
              .uploadfileAWSS3(url, this.files[i]["type"], this.files[i])
              .subscribe(
                (data) => {
                  if (data["type"] === 1) {
                    this.files[i]["progress"] =
                      (data["loaded"] / data["total"]) * 100;
                  }
                  if (data["type"] === 4) {
                    this.files[i]["isUploadCompleted"] = true;
                    this.files[i][
                      "uploadLocation"
                    ] = `https://${environment.S3_BUCKET_NAME}.s3.${environment.S3_Region}.amazonaws.com/${keyFile}`;
                  }
                },
                (error) => {
                  this.files[i].isUploadCompleted = false;
                  throw error;
                }
              );
          },
          (error) => {
            this.files[i].isUploadCompleted = false;
            throw error;
          }
        );
    }
  }


  


• FFmpeg - PHP Error Code 127

  25 avril 2013, par Kit

  I am trying to execute FFmpeg from php. I have installed FFmpeg-php, and the extension is in the modules directory and it shows up in phpinfo. FFmpeg is working fine as I can run the command in a terminal and it outputs the video. However, when I try and run the command from php using the following script :

  exec(ffmpeg -i input.avi output.avi);

  But I get a '127' error code.

  The extension is loaded in using :

  $extension      = "ffmpeg";
  
  $extension_soname   = $extension . "." . PHP_SHLIB_SUFFIX;
  
  $extension_fullname = PHP_EXTENSION_DIR . "/" . $extension_soname;
  
  
  
  // Locate Extension
  
  define('FFMPEG_LIBRARY', '/usr/local/bin/ffmpeg');
  
  
  
  // Load Extension
  
  if (!extension_loaded($extension))
  
      echo dl($extension_soname) or die("Can't load extension $extension_fullname\n");

  I have also tried defining the aboslute extension location in the command :

  exec(/usr/local/bin/ffmpeg-i input.avi output.avi);

  Again, this works in the terminal but still returns the same erro code using the php exec().

  Has anyone got any ideas ?

  Thank you.