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• Can I use a config file within an embedded youtube-dl code ?

  10 mai 2017, par Stack Johan

  Right now, I’m having issues with ffmpeg not being recognized. I have the ffmpeg files stored in a folder, and I normally call ffmpeg using —ffmpeg-location.

  I don’t know how to do that within Python code, and I would prefer to use config files to call all the options.

  This is what I have right now :

  from __future__ import unicode_literals
  
  import youtube_dl
  
  
  
  
  
   ydl_opts = {
  
      'format': 'bestaudio/best',
  
      'outtmpl': u'%(id)s.%(ext)s',
  
      'postprocessors': [{
  
      'key': 'FFmpegExtractAudio',
  
      'preferredcodec': 'mp3',
  
      'preferredquality': '192',
  
  }]
  
  }
  
  with youtube_dl.YoutubeDL(ydl_opts) as ydl:
  
  ydl.download(['https://youtu.be/Y_n0UwQMz5o'])

• Can not get frames from youtube video using FFmpegMediaMetadataRetriever

  27 juin 2019, par Ahasan Ratul

  I have been trying to extract a frame from a youtube video using FFmpegMediaMetadataRetriever in my android studio project. whenever I use the youtube url inside setDataSource, the app crashes. I am totally new in android studio and haven’t worked with FFmpeg before. I would appreciate if anyone can help me out. Also, I am sorry if I have asked a really silly/easy question.

  import wseemann.media.FFmpegMediaMetadataRetriever;
  
  .....
  
  
  
  private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
  
      @Override
  
      public void onManagerConnected(int status) {
  
          switch (status) {
  
              case LoaderCallbackInterface.SUCCESS: {
  
                  Log.i(TAG, "OpenCV loaded successfully");
  
                  mOpenCvCameraView.enableView();
  
                  try {
  
                      initializeOpenCVDependencies();
  
                  } catch (IOException e) {
  
                      e.printStackTrace();
  
                  }
  
              }
  
              break;
  
              default: {
  
                  super.onManagerConnected(status);
  
              }
  
              break;
  
          }
  
      }
  
  };
  
  
  
  
  
  private void initializeOpenCVDependencies() throws IOException {
  
  
  
      tick =0;
  
     //extract frame at 2 second using FFmpegMediaMetadataRetriever
  
      FFmpegMediaMetadataRetriever mmr = new FFmpegMediaMetadataRetriever();
  
      mmr.setDataSource("https://youtu.be/f-ehTcWC6dc");
  
      Bitmap b = mmr.getFrameAtTime(2000000, FFmpegMediaMetadataRetriever.OPTION_CLOSEST);
  
      mmr.release();
  
  
  
      objMat = new MatOfPoint2f();
  
      sceneMat = new MatOfPoint2f();
  
      obj_corners = new Mat(4, 1, CvType.CV_32FC2);
  
      img = new Mat();
  
      img2 = new Mat();
  
  }

  in the build.gradle, I have added the following dependencies

  dependencies {
  
  
  
         //FFmpegMediaMetadataRetriever dependencies
  
         implementation 'com.github.wseemann:FFmpegMediaMetadataRetriever:1.0.14'
  
  
  
         implementation project(path: ':openCVLibrary340dev')
  
  }

  error that I get is :

  E/AndroidRuntime : FATAL EXCEPTION : main
  Process : com.example.jeverfun, PID : 8877
  java.lang.RuntimeException : Unable to resume activity com.example.jeverfun/com.example.jeverfun.jevercamera : java.lang.IllegalArgumentException : setDataSource failed : status = 0xFFFFFFFF
  at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3581)
  at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3621)
  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2862)
  at android.app.ActivityThread.-wrap11(Unknown Source:0)
  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
  at android.os.Handler.dispatchMessage(Handler.java:106)
  at android.os.Looper.loop(Looper.java:164)
  at android.app.ActivityThread.main(ActivityThread.java:6494)
  at java.lang.reflect.Method.invoke(Native Method)
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
  Caused by : java.lang.IllegalArgumentException : setDataSource failed : status = 0xFFFFFFFF
  at wseemann.media.FFmpegMediaMetadataRetriever.setDataSource(Native Method)
  at com.example.jeverfun.jevercamera.initializeOpenCVDependencies(jevercamera.java:373)
  at com.example.jeverfun.jevercamera.access$100(jevercamera.java:59)
  at com.example.jeverfun.jevercamera$1.onManagerConnected(jevercamera.java:347)
  at com.example.jeverfun.jevercamera.onResume(jevercamera.java:469)
  at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1355)
  at android.app.Activity.performResume(Activity.java:7117)
  at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3556)
  at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3621) 
  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2862) 
  at android.app.ActivityThread.-wrap11(Unknown Source:0) 
  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589) 
  at android.os.Handler.dispatchMessage(Handler.java:106) 
  at android.os.Looper.loop(Looper.java:164) 
  at android.app.ActivityThread.main(ActivityThread.java:6494) 
  at java.lang.reflect.Method.invoke(Native Method) 
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) 
  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807) 
  I/MediaMetadataRetrieverJNI : release
  Application terminated.

• How to Download YouTube Videos in 1080p with English Subtitles Using yt-dlp with Python 3

  30 juillet 2024, par edge selcuk

  I am trying to download YouTube videos using yt-dlp in Python 3.9. I want to download videos in 1080p quality and if 1080p is not available, it should download the best available quality. The audio and video files should be merged into a single MP4 file, and I have ffmpeg installed to handle the merging process.

  


  Here is my script :

  


  import os
import sys
from yt_dlp import YoutubeDL

def download_video(url):
    output_dir = r"/path"  # Update this path

    # Ensure the output directory exists
    if not os.path.exists(output_dir):
        os.makedirs(output_dir)
    
    ydl_opts = {
        'format': '(bestvideo[height<=1080][ext=mp4]/bestvideo)+bestaudio/best',
        'merge_output_format': 'mp4',
        'write_auto_sub': True,
        'writesubtitles': True,
        'subtitleslangs': ['en'],
        'subtitlesformat': 'vtt',
        'embedsubtitles': True,
        'outtmpl': os.path.join(output_dir, '%(title)s.%(ext)s'),
        'postprocessors': [{
            'key': 'FFmpegVideoConvertor',
            'preferedformat': 'mp4',
        }],
    }

    with YoutubeDL(ydl_opts) as ydl:
        ydl.download([url])

if __name__ == "__main__":
    if len(sys.argv) != 2:
        print("Usage: python download_video.py ")
        sys.exit(1)

    youtube_url = sys.argv[1]
    download_video(youtube_url)


  


  This script successfully downloads the video in 1080p quality or the best available quality and merges the audio and video files as intended. However, it does not download the subtitles as intended.

  


  I have ffmpeg installed for merging the video and audio files. How can I modify this script to ensure that English subtitles are downloaded and embedded in the video file ?