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• python ff-mpeg not working on VM

  2 août 2013, par Bob

  I have two Windows 2008 R2 64 bit servers with two different host providers (GoDaddy and company B). My python script runs successfully on GoDaddy's server. It doesn't run successfully on the server with company B.

  I installed the same software on both servers :

  • Python 2.7 for Windows 32 bit
  • NumPY module
  • SetupTools
  • EchoNest API for Windows

  The company B server is giving me an error related to an executable called en-ffmpeg.exe that uses the python ff-mpeg module. The exact error message is

  [dv @ 0x1449690]Can't determine profile of DV input stream.
  C :\Music\song1.mp3 : Error while opening file

  The song.mp3 file exists. I installed the latest Windows updates on the server with Company B but still I get the error. I believe the error is because something is not configured properly on this server (missing libraries or drivers ?). However, I don't know what that is !

  Please help :)

  UPDATED TO INCLUDE COMMAND AND ERROR OUTPUT FROM FFMPEG

  COMMAND :

  c :\Python27>en-ffmpeg -i "C :\Music\song1.mp3" -y -ac 2 -ar 44100
  "c :\users\x07 dmini 1\x07ppdata\local\temp\x02\tmpax82jf.wav"

  FULL ERROR :

  FFmpeg version SVN-r17988-Komeil, Copyright (c) 2000-2009 Fabrice Bellard, et al
  
  .
  
    configuration: --enable-memalign-hack --extra-cflags=-fno-common --enable-stat
  
  ic --disable-shared --disable-debug --enable-gpl --enable-nonfree --enable-avfil
  
  ter --enable-avfilter-lavf --enable-avisynth --enable-postproc --enable-pthreads
  
   --enable-libamr-nb --enable-libamr-wb --enable-libgsm --enable-libfaac --enable
  
  -libfaad --enable-libmp3lame --enable-libschroedinger --enable-libspeex --enable
  
  -libtheora --enable-libvorbis --enable-libx264 --enable-libxvid
  
    libavutil     50. 0. 0 / 50. 0. 0
  
    libavcodec    52.21. 0 / 52.21. 0
  
    libavformat   52.31. 1 / 52.31. 1
  
    libavdevice   52. 1. 0 / 52. 1. 0
  
    libavfilter    0. 4. 0 /  0. 4. 0
  
    libswscale     0. 7. 1 /  0. 7. 1
  
    libpostproc   51. 2. 0 / 51. 2. 0
  
    built on Mar 15 2009 18:16:31, gcc: 4.3.0 20080305 (alpha-testing) mingw-20080
  
  502
  
  [dv @ 0x1449690]Can't determine profile of DV input stream.
  
  C:\\Music\\song1.mp3: Error while opening file

  I also tried removing the double back slashes from the command but got the same error.

• Trying to convert an mp3 file to a Numpy Array, and ffmpeg just hangs

  5 juillet 2016, par Rich

  I’m working on a music classification methodology with Scikit-learn, and the first step in that process is converting a music file to a numpy array.

  After unsuccessfully trying to call ffmpeg from a python script, I decided to simply pipe the file in directly :

  FFMPEG_BIN = "ffmpeg"
  
  cwd = (os.getcwd())
  
  dcwd = (cwd + "/temp")
  
  if not os.path.exists(dcwd): os.makedirs(dcwd)
  
  
  
  folder_path = sys.argv[1]
  
  f = open("test.txt","a")
  
  
  
  for f in glob.glob(os.path.join(folder_path, "*.mp3")):
  
      ff = f.replace("./", "/")
  
      print("Name: " + ff)
  
      aa = (cwd + ff)
  
  
  
      command = [ FFMPEG_BIN,
  
          '-i',  aa,
  
          '-f', 's16le',
  
          '-acodec', 'pcm_s16le',
  
          '-ar', '22000', # ouput will have 44100 Hz
  
          '-ac', '1', # stereo (set to '1' for mono)
  
          '-']
  
  
  
      pipe = sp.Popen(command, stdout=sp.PIPE, bufsize=10**8)
  
      raw_audio = pipe.proc.stdout.read(88200*4)
  
      audio_array = numpy.fromstring(raw_audio, dtype="int16")
  
      print (str(audio_array))
  
      f.write(audio_array + "\n")

  The problem is, when I run the file, it starts ffmpeg and then does nothing :

  [mp3 @ 0x1446540] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, mp3, from '/home/don/Code/Projects/MC/Music/Spaz.mp3':
  
    Metadata:
  
      title           : Spaz
  
      album           : Seeing souns
  
      artist          : N*E*R*D
  
      genre           : Hip-Hop
  
      encoder         : Audiograbber 1.83.01, LAME dll 3.96, 320 Kbit/s, Joint Stereo, Normal quality
  
      track           : 5/12
  
      date            : 2008
  
    Duration: 00:03:50.58, start: 0.000000, bitrate: 320 kb/s
  
      Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 320 kb/s
  
  Output #0, s16le, to 'pipe:':
  
    Metadata:
  
      title           : Spaz
  
      album           : Seeing souns
  
      artist          : N*E*R*D
  
      genre           : Hip-Hop
  
      date            : 2008
  
      track           : 5/12
  
      encoder         : Lavf56.4.101
  
      Stream #0:0: Audio: pcm_s16le, 22000 Hz, mono, s16, 352 kb/s
  
      Metadata:
  
        encoder         : Lavc56.1.100 pcm_s16le
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mp3 (native) -> pcm_s16le (native))
  
  Press [q] to stop, [?] for help

  It just sits there, hanging, for far longer than the song is. What am I doing wrong here ?,

• Trying to convert an mp3 file to a Numpy Array, and ffmpeg just hangs

  29 mai 2021, par Rich

  I'm working on a music classification methodology with Scikit-learn, and the first step in that process is converting a music file to a numpy array.

  



  After unsuccessfully trying to call ffmpeg from a python script, I decided to simply pipe the file in directly :

  



  FFMPEG_BIN = "ffmpeg"
cwd = (os.getcwd())
dcwd = (cwd + "/temp")
if not os.path.exists(dcwd): os.makedirs(dcwd)

folder_path = sys.argv[1]
f = open("test.txt","a")

for f in glob.glob(os.path.join(folder_path, "*.mp3")):
    ff = f.replace("./", "/")
    print("Name: " + ff)
    aa = (cwd + ff)

    command = [ FFMPEG_BIN,
        '-i',  aa,
        '-f', 's16le',
        '-acodec', 'pcm_s16le',
        '-ar', '22000', # ouput will have 44100 Hz
        '-ac', '1', # stereo (set to '1' for mono)
        '-']

    pipe = sp.Popen(command, stdout=sp.PIPE, bufsize=10**8)
    raw_audio = pipe.proc.stdout.read(88200*4)
    audio_array = numpy.fromstring(raw_audio, dtype="int16")
    print (str(audio_array))
    f.write(audio_array + "\n")


  



  The problem is, when I run the file, it starts ffmpeg and then does nothing :

  



  [mp3 @ 0x1446540] Estimating duration from bitrate, this may be inaccurate
Input #0, mp3, from '/home/don/Code/Projects/MC/Music/Spaz.mp3':
  Metadata:
    title           : Spaz
    album           : Seeing souns
    artist          : N*E*R*D
    genre           : Hip-Hop
    encoder         : Audiograbber 1.83.01, LAME dll 3.96, 320 Kbit/s, Joint Stereo, Normal quality
    track           : 5/12
    date            : 2008
  Duration: 00:03:50.58, start: 0.000000, bitrate: 320 kb/s
    Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 320 kb/s
Output #0, s16le, to 'pipe:':
  Metadata:
    title           : Spaz
    album           : Seeing souns
    artist          : N*E*R*D
    genre           : Hip-Hop
    date            : 2008
    track           : 5/12
    encoder         : Lavf56.4.101
    Stream #0:0: Audio: pcm_s16le, 22000 Hz, mono, s16, 352 kb/s
    Metadata:
      encoder         : Lavc56.1.100 pcm_s16le
Stream mapping:
  Stream #0:0 -> #0:0 (mp3 (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help


  



  It just sits there, hanging, for far longer than the song is. What am I doing wrong here ?,