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• how to begin streaming while ffmpeg is still transcoding the file in PHP

  15 janvier 2013, par Joyal

  I want to transcode an AVI video to mp4 with ffmpeg, but while is still transcoding, I would like to watch the video transcoded on a flash video player in realtime , Im using jwplayer , I made some test with mp4 and works great , but Im not able to make it work while is transcoding

  I made a php script to run the command in background

  ffmpeg.exe -threads 1 -y -i "a.avi" -s 1280x720 -f mp4 -vcodec libx264 -b 2000000 -ab 128000 -ar 44100 "a.mp4"

  on the jwplayer i have as source "a.mp4"

• Is async.js needed to process multiple ffmpeg conversions at the same time ?

  15 février 2019, par jurelik

  I’m trying to convert youtube videos to mp3 via my Node.js server, using ’ytdl-core’ and ’fluent-ffmpeg’. Since the server is intended to process multiple requests at the same time, it got me thinking whether or not async.js is needed to convert videos in a time efficient manner.

  The interesting thing however, is that upon testing the handling of multiple requests with and without using async.js, the result seems to be the same both ways - the time it takes to convert 3 videos is the same.

  Here is the code I’m using without async.js :

  server.get('/download/:id', (req, res) => {
  
  
  
    const id = req.params.id;
  
    let stream = ytdl(`https://www.youtube.com/watch?v=${id}`);
  
  
  
    ffmpeg(stream)
  
      .audioCodec('libmp3lame')
  
      .audioBitrate(128)
  
      .toFormat('mp3')
  
      .save(`public/downloads/${id}.mp3`)
  
      .on('error', err => {
  
        console.log(err);
  
      })
  
      .on('end', () => {
  
        console.log('file downloaded');
  
        send(req, `public/downloads/${id}.mp3`).pipe(res);
  
      });
  
  });

  And this is the code using async.js :

  let queue = async.queue((task, callback) => {
  
    let stream = ytdl(`https://www.youtube.com/watch?v=${task.id}`);
  
  
  
    ffmpeg(stream)
  
    .audioCodec('libmp3lame')
  
    .audioBitrate(128)
  
    .toFormat('mp3')
  
    .save(`public/downloads/${task.id}.mp3`)
  
    .on('error', err => {
  
      console.log(err);
  
      callback(err)
  
    })
  
    .on('end', () => {
  
      send(task.req, `public/downloads/${task.id}.mp3`).pipe(task.res);
  
      callback('file sucessfully downloaded');
  
    });
  
  }, 5);
  
  
  
  queue.drain = function() {
  
    console.log('all items downloaded');
  
  }
  
  
  
  server.get('/download/:id', (req, res) => {
  
    queue.push({req: req, id: req.params.id, res: res}, err => {
  
      console.log(err);
  
    });
  
  });

  Does anyone have any ideas why both methods seem to finish conversion at roughly the same time ? I would imagine using async.js should finish converting the videos faster due to processing in parallel, but that isn’t the case.

  Any thoughts would be much appreciated !

• Having issues making an app with py2app ffmpeg and ffprobe

  23 septembre 2024, par Nuno Mesquita

  I have made an app in OSX Python, that uses FFMEG and ffprobe.

  


  It runs fine in my VS Code.

  


  I want to make a self sustained app, that others can use, without needed to install anything themselves. So, I manually included the static libraries in the bin folder of my main app, and am able to run the app using the libraries inside my bin folder.

  


  I have lost many hours trying to figure this out, and am always getting the same error.

  


  My best shot was being able to open the app inside app/contents/resources and running via Python, but still have the issue saying that ffprobe is not available.

  


  I´m losing my mind...

  


  Should I try a completely different approach ?

  


  For now, I just want my OSX friends to be able to use the app, then I will want it to run on Windows too, but baby steps.

  


  I am not quite sure what to include in setup.py, so I would love to include everything that is in my app folder, to avoid all sorts of errors in missing .pngs and stuff.

  


  I also made sure that libraries are executable (they are about 80MB each (ffmpeg and ffprobe))

  


  Can anyone help =D ???

  


  I described above, tested different ways, checked stuff like redirecting the libraries to the folders of the app :

  


  For the last try my setup.py was :

  


  from setuptools import setup

APP = ['mpc.py']
DATA_FILES = [
    ('bin', ['./bin/ffmpeg', './bin/ffprobe']),
    ('theme/dark', ['./theme/dark/*.png']),
    ('theme/light', ['./theme/light/*.png']),
    ('theme', ['./theme/dark.tcl', './theme/light.tcl']),
    '.',  # Add current directory to ensure everything is included
]

OPTIONS = {
    'argv_emulation': False,
    'packages': ['pydub', 'pygame', 'requests', 'freesound'],
    'includes': ['pydub', 'pygame', 'requests', 'freesound'],
    'resources': ['./bin/ffmpeg', './bin/ffprobe', './theme/dark/*.png', './theme/light/*.png',     './theme/dark.tcl', './theme/light.tcl'],
}

setup(
    app=APP,
    data_files=DATA_FILES,
    options={'py2app': OPTIONS},
    setup_requires=['py2app'],
)


  


  And I also had this in the beginning of my Python script :

  


  # Set ffmpeg and ffprobe paths relative to the app's Resources/bin directory
app_dir = os.path.dirname(os.path.abspath(__file__)) 

# Set ffmpeg and ffprobe paths relative to the app's Resources/bin directory
ffmpeg_path = os.path.join(app_dir, 'bin', 'ffmpeg')
ffprobe_path = os.path.join(app_dir, 'bin', 'ffprobe') 
AudioSegment.converter = ffmpeg_path
AudioSegment.ffprobe = ffprobe_path


  


  Don't know what else to try.