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• Pass ffmpeg stream through python script

  24 décembre 2018, par luddite478

  Please tell me how to pass my stream from ffmepg through python script, get response back, and pass it to ffmpeg again ?
  For now i have something like this :

    FFMPEG_SCRIPT = [ "ffmpeg",  '-i', 'fifo',  '-pix_fmt', 'bgr24',  ' 
  
      -vcodec', 'rawvideo',  '-an', '-sn',  '-f', 'mpegts', '-' ]
  
      pipe = sp.Popen(FFMPEG_SCRIPT, stdout = sp.PIPE, bufsize=4096)

  After this i’m just reading video-frames in while loop

  while True:
  
       frame = pipe.stdout.read(480*720*3)
  
       sys.stdout.write(frame)

  So how can i access the frame after i wrote it to stdout at the last line ?

• FFmpeg error when trying to stream file into it

  15 décembre 2015, par nadermx

  I’m trying to put a stream into a ffmpeg pipe.

  The issue I am having is that when I send the data to ffmpeg I get a error 127

  It also shows /bin/sh: 2: -acodec: not found

  Here is the console log I’m running via python

  from subprocess import Popen, PIPE
  
  from flask import Flask, stream_with_context, request, Response
  
  from signal import signal, SIGPIPE, SIG_DFL
  
  signal(SIGPIPE,SIG_DFL)
  
  
  
  def console(cmd, add_newlines=False):
  
      p = Popen(cmd, shell=True, stdout=PIPE)
  
      while True:
  
          data = p.stdout.read()
  
          if add_newlines:
  
              data += '\n'
  
          yield data
  
  
  
          p.poll();
  
          if isinstance(p.returncode, int):
  
              if p.returncode > 0:
  
                  # return code was non zero, an error?
  
                  print 'error:', p.returncode
  
  
  
              break
  
  
  
          sleep(2)

  And here is the actual route I am running the application in.

  @app.route('/large.mp3')
  
  def generate_large_mp3():
  
      url = 'https://www.youtube.com/watch?v=zGEiJ44K3Oo'
  
      result = ''.join(data.strip() for data in console('youtube-dl --simulate --get-url %s' % url))
  
      mp3 = console('sudo ffmpeg -i %s -acodec libmp3lame  -f mp3 -' % result, add_newlines=True)
  
  
  
      return Response(stream_with_context(mp3), mimetype='video/mp3')

  Here is the error output

  /bin/sh: 2: https://r13---sn-ab5l6nes.googlevideo.com/videoplayback?id=cc6122278e0adcea: not found
  
  /bin/sh: 2: -acodec: not found
  
  ffmpeg version git-2015-12-10-3652dd5 Copyright (c) 2000-2015 the FFmpeg developers
  
    built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
  
    configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-openssl --enable-nonfree --enable-version3 --enable-gnutls
  
    libavutil      55. 10.100 / 55. 10.100
  
    libavcodec     57. 17.100 / 57. 17.100
  
    libavformat    57. 19.100 / 57. 19.100
  
    libavdevice    57.  0.100 / 57.  0.100
  
    libavfilter     6. 20.100 /  6. 20.100
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  [https @ 0x384d0a0] HTTP error 403 Forbidden
  
  https://r13---sn-ab5l6nes.googlevideo.com/videoplayback?id=cc6122278e0adcea: Server returned 403 Forbidden (access denied)
  
  127.0.0.1 - - [15/Dec/2015 00:55:59] "GET /large.mp3 HTTP/1.1" 200 -
  
  error: 127

  I have tried many different urls and all of them end up with the same issue.
  I have also tried installing every dependency I have been able to find and still no luck

• Laravel unable to load FFProbe ?

  24 juin 2024, par marked-down

  I'm using the PHP-FFMpeg repository to do some video work inside my Laravel application, but I'm encountering some issues setting it up. Once I've installed the PHP-FFMpeg repo, I try and create an FFMpeg instance :

  



  $ffmpeg = \FFMpeg\FFMpeg::create();


  



  However, this does not work. In response, I get an ErrorException that simply states :

  



  Unable to load FFProbe


  



  This does not make sense to me, as when I run ffmpeg and ffprobe from my Mac's terminal, I can see they are installed. This is clearly a path/resolving issue, but I'm unsure how to fix it. Any ideas ?

  



  This is all hosted under a MAMP project, running on localhost.