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• Can't obtain information with ffmpeg from Smooth Streaming Manifest file

  5 mars 2015, par Alberto

  I’m trying to get details for a stream of protocol Microsoft Smooth Streaming, with ffmpeg tools (ffprobe and ffplay) but when I run the next command :

  ffprobe -i http://b31282.cdn.telefonica.com/31282/Manifest

  I obtain this :

  http://b31282.cdn.telefonica.com/31282/Manifest: Invalid data found when processing input

  I assume that this Manifest file is correct and complies with standards of Smooth Streaming . This is a brief extract of Manifest file :

  <smoothstreamingmedia majorversion="2" minorversion="0" duration="0" timescale="10000000" islive="TRUE" lookaheadfragmentcount="2" dvrwindowlength="6000000000" canseek="TRUE" canpause="TRUE">
  
    <protection>
  
      <protectionheader systemid="9a04f079-9840-4286-ab92-e65be0885f95">oioAAAIAAQCUAjwAV...</protectionheader>
  
    </protection>
  
    <streamindex type="audio" language="esp" subtype="" chunks="0" timescale="10000000" url="QualityLevels({bitrate})/Fragments(audio_esp={start time})"></streamindex>
  
    <streamindex type="video" language="" subtype="" chunks="0" timescale="10000000" url="QualityLevels({bitrate})/Fragments(video={start time})"></streamindex>
  
  </smoothstreamingmedia>

  Is a Fedora 21 and ffmpeg version and configuration is :

  ffmpeg version git-2015-02-27-d490b26
  
  configuration: --enable-gpl --enable-nonfree --enable-libfdk_aac --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264
  
  libavutil         54. 19.100         
  
  libavcodec        56. 26.100          
  
  libavformat       56. 23.105           
  
  libavdevice       56.  4.100                   
  
  libavfilter        5. 11.102          
  
  libswscale         3.  1.101        
  
  libswresample      1.  1.100           
  
  libpostproc       53.  3.100 

  PD : I prefer use only ffmpeg tool

  PD2 : Same thing with a Microsoft Smooth Streaming Manifest file :

  ffmpeg -i http://mediadl.microsoft.com/mediadl/iisnet/smoothmedia/Experience/BigBuckBunny_720p.ism/Manifest
  
  Invalid data found when processing input

  Thanks for all

• Explicit deinitialization of progress listeners.

  14 octobre 2018, par blueimp

  Explicit deinitialization of progress listeners.
  This addresses a memory leak with Microsoft Edge.
  Thanks @butonic for the report, investigation and fix.
  Closes #3508

• How to determine if a ffmpeg subprocess has fallen

  9 avril 2020, par TiHan

  I have an issue

  



  I want to create a new ffmpeg process using subprocess.popen
find out his pid
and in the body of a python program to see if the process is alive or not

  



  args = shlex.split ('ffmpeg -i rtsp: //192.168.1.68: 8554 / mystream -f segment -strftime 1 -segment_time 5 13_REG1_CHANNEL3_% Y-% m-% d_% H-% M-% S-% s .mp3 ')
print (args)
proc = subprocess.Popen (args, stdout = subprocess.PIPE)
ch_pid = proc.pid
print (proc.pid)
proc.wait ()
print (proc.communicate ())
while (1):
 if (os.system (str ('kill -0 {PID}'). format (PID = ch_pid)) == 0):
   print ('proc is alive')
 else:
   break


  



  at while loop i tried to check this process pid via kill -0 pid
this command will return zero if everything is alright and process is running

  



  BUT

  



  IF ffmpeg will fall
there will be no changes

  



  kill -0 pid will continue to returning zero code that everything is good

  



  What should i do ?