Recherche avancée

Sur d’autres sites (9046)

• Bad file descriptor decoding mp3 to pipe with ffmpeg

  1er février 2017, par Pete Bleackley

  Can any FFMpeg gurus help me with the following ?

  I’m trying to convert a podcast to PCM and downsample it to 16KHz mono before feeding it to a speech recognition system for transcription. The command line

  ffmpeg -i http://media.blubrry.com/conlangery/content.blubrry.com/conlangery/Conlangery01.mp3 -f s16le -ac 1 -ar 16000 pipe:0

  fails with

  av_interleaved_write_frame() : Bad file descriptor

  What is the problem here and how do I fix it ?

  EDIT

  Full error message is

  ffmpeg version N-83189-gd5d474aea5-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 5.4.1 (Debian 5.4.1-4) 20161202
  
    configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-5 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
  
    libavutil      55. 44.100 / 55. 44.100
  
    libavcodec     57. 75.100 / 57. 75.100
  
    libavformat    57. 62.100 / 57. 62.100
  
    libavdevice    57.  2.100 / 57.  2.100
  
    libavfilter     6. 69.100 /  6. 69.100
  
    libswscale      4.  3.101 /  4.  3.101
  
    libswresample   2.  4.100 /  2.  4.100
  
    libpostproc    54.  2.100 / 54.  2.100
  
  Input #0, mp3, from 'http://media.blubrry.com/conlangery/content.blubrry.com/conlangery/Conlangery01.mp3':
  
    Metadata:
  
      track           : 1
  
      album           : Conlangery Podcast
  
      title           : Conlangery 01
  
      artist          : George Corley
  
      date            : 2011
  
    Duration: 00:44:58.08, start: 0.025057, bitrate: 128 kb/s
  
      Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
  
      Metadata:
  
        encoder         : LAME3.98r
  
  Output #0, s16le, to 'pipe:0':
  
    Metadata:
  
      track           : 1
  
      album           : Conlangery Podcast
  
      title           : Conlangery 01
  
      artist          : George Corley
  
      date            : 2011
  
      encoder         : Lavf57.62.100
  
      Stream #0:0: Audio: pcm_s16le, 16000 Hz, mono, s16, 256 kb/s
  
      Metadata:
  
        encoder         : Lavc57.75.100 pcm_s16le
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mp3 (native) -> pcm_s16le (native))
  
  Press [q] to stop, [?] for help
  
  av_interleaved_write_frame(): Bad file descriptor
  
  Error writing trailer of pipe:0: Bad file descriptorsize=       1kB time=00:00:00.02 bitrate= 256.0kbits/s speed=95.2x    
  
  video:0kB audio:1kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%
  
  Conversion failed!
  
  Traceback (most recent call last):
  
    File "./PodcastTranscriber.py", line 206, in <module>
  
      PodcastTranscriber('http://conlangery.com/feed/',upload)()        
  
    File "./PodcastTranscriber.py", line 101, in __call__
  
      self.process(item)
  
    File "./PodcastTranscriber.py", line 136, in process
  
      (audio,errors)=mp3.run(stdout=subprocess.PIPE)
  
    File "/usr/local/lib/python2.7/site-packages/ffmpy.py", line 105, in run
  
      raise FFRuntimeError(self.cmd, self.process.returncode, out[0], out[1])
  
  ffmpy.FFRuntimeError: `ffmpeg -i http://media.blubrry.com/conlangery/content.blubrry.com/conlangery/Conlangery01.mp3 -f s16le -ac 1 -ar 16000 pipe:0` exited with status 1
  
  </module>

  The invoking code is

  def process(self,item):
  
      """Downloads the audio and transcribes it"""
  
      audio_url=None
  
      print item['title']
  
      for link in item.links:
  
          if link['rel']=='enclosure':
  
              audio_url=link['href']
  
      if audio_url is not None:
  
          pubDate=to_date(item.published_parsed)
  
          if self.lastUploadDate is None or pubDate>self.lastUploadDate:
  
              self.lastUploadDate=pubDate
  
          mp3=ffmpy.FFmpeg(inputs={audio_url:None},
  
                           outputs={'pipe:0':['-f','s16le','-ac','1','-ar','16000']})
  
          (audio,errors)=mp3.run(stdout=subprocess.PIPE)
  
          sphinx=subprocess.Popen(['java','-jar','transcriber.jar'],
  
                                  stdin=audio,
  
                                  stdout=subprocess.PIPE)
  
          wiki=threading.Thread(target=self.callback,args=(item,sphinx.stdout))
  
          wiki.start()
  
          #mp3.start()
  
          #mp3.join()
  
          sphinx.stdin.close()
  
          wiki.join()
  
          sphinx.wait()

• ffmpeg live stream multiple outputs to same pipe (stdout Python)

  18 février 2017, par WobbaFetttttt

  So I am writing a stream ingest in Python with ffmpeg and want my Python script to receive the video and audio feeds separately without making a temporary file.

  I have tried these subprocess PIPE commands inspired by THIS BLOG and THIS FFMPEG TUTORIAL for Python integration and multiple ffmpeg outputs :

  from subprocess import Popen, PIPE
  
  
  
  stream = Popen([
  
      'ffmpeg',
  
      '-i', URL, '\\',
  
  
  
      '-f', 'image2pipe',
  
      '-pix_fmt', 'rgb24',
  
      '-vcodec', 'rawvideo', '-', '\\',
  
  
  
      '-f', 's16le',
  
      '-ac', '2',
  
      '-ar', '44100',
  
      '-vcodec', 'pcm_s16le', '-'
  
  ], stdout=PIPE, stderr=PIPE, bufsize=10**8)
  
  
  
  print 'ingesting stream'
  
  for i in range(300):
  
      video = stream.stdout.read(640*360*3)
  
      video = numpy.fromstring(video, dtype='uint8')
  
      video = video.reshape((360,640,3))
  
  
  
      stream.stdout.flush()
  
  
  
      audio = stream.stdout.read(2*44100*2/10)
  
      audio = numpy.fromstring(audio, dtype='int16')
  
      audio = audio.reshape((len(audio)/2, 2))
  
  
  
      stream.stdout.flush()
  
  
  
  stream.terminate()

  but this gives first pipe read seems to read no data :

  Traceback (most recent call last):
  
    File "test.py", line 63, in <module>
  
      video = video.reshape((360,640,3))
  
  ValueError: cannot reshape array of size 0 into shape (360,640,3)
  
  </module>

  I tried running each pipe individually and they work just fine

• FFmpeg Live streaming Error : ffmpeg av_interleaved_write_frame broken pipe. Conversion Failed

  28 février 2017, par A Sahra

  I am trying to stream video live using ffmpeg. videos stream is coming from a camera over the network and there is bunch error that i got in initial part of doing this but here i am stacked with a error that is coming from ffmpeg where it says av_interleaved_write_frame() broken pipe,then at the end i get a message saying conversion failed ,when i want to capture the stream in any format it works like a charm but when it comes to streaming it gives the error.Why this is happening ?

  the command i am using to get the streaming is here :

  ffmpeg - i rtsp://10.63.191.250/aerostat http://10.20.1.142:8080/feed.ffm
  
  or 
  
  ffmpeg - i rtsp://10.63.191.250/aerostat -acodec copy -vcodec copy http://10.20.1.142:8080/feed.ffm
  
  //with both the command i am getting the same error

  The ffmpeg out put is Here :

  [h264 @ 0x3965b40] decode_slice_header error
  
  [h264 @ 0x3965b40] no frame!
  
  [h264 @ 0x3965b40] non-existing PPS 0 referenced
  
  Last message repeated 1 times
  
  [h264 @ 0x3965b40] decode_slice_header error
  
  [h264 @ 0x3965b40] no frame!
  
  Input #0, rtsp, from 'rtsp://10.63.191.250/aerostat':
  
  Metadata:
  
  title : \Aerostat
  
  Duration: N/A, start: 63184.792467, bitrate: N/A
  
  Program 1
  
  Stream #0:0: Audio: aac (LC), 48000 Hz, stereo, fltp, 77 kb/s
  
  Stream #0:1: Video: h264 (Baseline) ([27][0][0][0] / 0x001B),     yuv420p(progressive), 656x368 [SAR 1:1 DAR 41:23], 29.97 fps, 29.97 tbr, 90k  tbn, 59.94 tbc
  
  [libvpx @ 0x397a360] v1.6.0
  
  Output #0, ffm, to 'http://10.20.1.142:8080/feed.ffm':
  
  Metadata:
  
  title : \Aerostat
  
  creation_time : now
  
  encoder : Lavf57.56.100
  
  Stream #0:0: Audio: vorbis (libvorbis), 22050 Hz, mono, fltp, 64 kb/s
  
  Metadata:
  
  encoder : Lavc57.64.101 libvorbis
  
  Stream #0:1: Video: vp8 (libvpx), yuv420p, 720x576 [SAR 164:115 DAR   41:23], q=10-42, 400 kb/s, 29.97 fps, 1000k tbn, 25 tbc
  
  Metadata:
  
  encoder : Lavc57.64.101 libvpx
  
  Side data:
  
  cpb: bitrate max/min/avg: 0/0/0 buffer size: 800000 vbv_delay: -1
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (aac (native) -> vorbis (libvorbis))
  
  Stream #0:1 -> #0:1 (h264 (native) -> vp8 (libvpx))
  
  Press [q] to stop, [?] for help
  
  av_interleaved_write_frame(): Broken pipe
  
  Last message repeated 6 times
  
  Error writing trailer of http://10.20.1.142:8080/feed.ffm: Broken pipeframe= 6 fps=0.0 q=0.0 Lsize= 52kB time=00:00:00.43 bitrate=  972.0kbits/s dup=5 drop=0 speed=0.778x
  
  video:43kB audio:3kB subtitle:0kB other streams:0kB global headers:4kB  muxing overhead: 13.661202%
  
  Conversion failed!

  Here is My FFserver.conf file :

  HTTPPort 8080 # Port to bind the server to
  
  HTTPBindAddress 0.0.0.0
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 10000 # Maximum bandwidth per client
  
  # set this high enough to exceed stream bitrate
  
  CustomLog -
  
  <feed> # This is the input feed where FFmpeg will send
  
  File ./feed.ffm # video stream.
  
  FileMaxSize 1G # Maximum file size for buffering video
  
  ACL allow 10.20.0.0 10.20.255.255 # Allowed IPs
  
  ACL allow 127.0.0.1
  
  ACL allow localhost
  
  </feed>
  
  <stream> # Output stream URL definition
  
  Feed feed.ffm # Feed from which to receive video
  
  Format webm
  
  # Audio settings
  
  AudioCodec vorbis
  
  Audi0oBitRate 64 # Audio bitrate
  
  # Video settings
  
  VideoCodec libvpx
  
  VideoSize 720x576 # Video resolution
  
  VideoFrameRate 25 # Video FPS
  
  AVOptionVideo flags +global_header # Parameters passed to encoder
  
  # (same as ffmpeg command-line parameters)
  
  AVOptionVideo cpu-used 0
  
  AVOptionVideo qmin 10
  
  AVOptionVideo qmax 42
  
  AVOptionVideo quality good
  
  AVOptionAudio flags +global_header
  
  PreRoll 15
  
  StartSendOnKey
  
  VideoBitRate 400 # Video bitrate
  
  </stream>
  
  <stream> # Server status URL
  
  Format status
  
  # Only allow local people to get the status
  
  ACL allow 127.0.0.1
  
  ACL allow 10.20.0.0 10.20.255.255
  
  </stream>
  
  <redirect> # Just an URL redirect for index
  
  # Redirect index.html to the appropriate site
  
  URL http://www.ffmpeg.org/
  
  </redirect>