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• Use ffprobe on Sagemaker Jupyter Notebook : /bin/sh : 1 : ffprobe : not found

  2 juillet 2020, par Guu

  I need to use FFprobe to get the metadata(the orientation of the video) of videos on SageMaker Studio. Even I installed FFmpeg and FFprobe via pip install, the notebook doesn't recognize the packages.

  


  /bin/sh: 1: ffprobe: not found

  


  It is tricky since I've already tried to install them on System terminal and it worked, but it still doesn't work on the Image terminal or Jupyter Notebook.

  


  Is that because of the dependencies ? I've checked other ways to get the metadata but couldn't find one working. I could get simple metadata via hachoir-metadata but it didn't give the orientation. Any advice is welcomed. Thanks.

  


• Video call between eyebeam and baresip SIP clients

  7 décembre 2012, par user1490337

  I am trying to achieve video call on 2 SIP clients

  1. Baresip
  2. Eyebeam

  Till now I have succeeded in getting audio stream both ways but the video stream is one way i.e iam getting the stream at the baresip terminal but I cannot see video at the EYEBEAM terminal. I can't understand where I am going wrong.

  The eyebeam is sending STAP-a and Fu-a packets to eyebeam as I checked it through wireshark. But baresip is not sending any STAP-a and Fu-a packets to eyebeam hence no video.. Both the clients support H.264.

  Pointers in the right direction are welcome.

• How to queue ffmpeg FIFO

  29 avril 2013, par Francois

  we build a service similar to youtube. Also converting runs fine with ffmpeg using this script from another post here :

  How do I set up an ffmpeg queue ?

  #!/bin/bash
  
  
  
  pipe=/tmp/ffmpeg
  
  
  
  trap "rm -f $pipe" EXIT
  
  
  
  # creating the FIFO    
  
  [[ -p $pipe ]] || mkfifo $pipe
  
  
  
  while true; do
  
  # can't just use "while read line" if we 
  
  # want this script to continue running.
  
  read line < $pipe
  
  
  
  # now implementing a bit of security,
  
  # feel free to improve it.
  
  # we ensure that the command is a ffmpeg one.
  
  [[ $line =~ ^ffmpeg ]] && bash <<< "$line"
  
  done

  This works pretty good when i send one by one to the named pipe. When i send more than one at same time the second one queues the terminal to the point the first one finished. if a try more than 2 the third one will not be transcoded.

  So i tried to workaround with background sending to get the terminal free (just drop the echo command and close the ssh connection) but this doesn't work, then i played around with screen -X but also no luck. Maybe someone has a good idea to deal this.

  What i wanna do is : Every uploaded video which is needed to transcode will send a echo to the named pipe. FIFO should match but not blocking the terminal. So i think i need something to really queue ffmpeg input.

  kindest regards
  Francois