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• How can I check whether an RTMP live stream is working on the server side ?

  10 juin 2015, par Moyersy

  I have a site where users can broadcast their own live streams. They are provided with a URL to push their stream to over RTMP. Viewers have an embedded flash player to watch each stream.

  I need to be able to determine whether a particular stream is broadcasting. It doesn’t need to do any analysis, simply to check that there’s an actual stream at the RTMP URL.

  It seems that VLC doesn’t support RMTP.
  I’ve tried ffmpeg but not managed to solve the problem yet.

  Server is running Ubuntu.

  Bonus : How can I update the database based on the results of this stream test ?

• Creating automated ffmpeg converter

  27 janvier 2019, par Jeffrey Moser

  I am trying to create an automated process using ffmpeg and am having issues understanding how to adapt the code to automator.

  The code works beautifully in the terminal, but requires each filename to me entered manually. I am trying to automate the process.

  for f in "$@"
  
  do
  
  
  
  FILE= "$f"
  
  OUT=${FILE/mp4/png}
  
  OUT_WIDTH=10800
  
  OUT_HEIGHT=3600
  
  
  
  eval $(ffprobe -v error -of flat=s=_ -select_streams v:0 -show_entries stream=height,width "${FILE}")
  
  IN_WIDTH=${streams_stream_0_width}
  
  IN_HEIGHT=${streams_stream_0_height}
  
  
  
   eval $(ffprobe -v error -of flat=s=_ -count_frames -select_streams v:0 -show_entries stream=nb_read_frames "${FILE}")
  
  IN_FRAMES=${streams_stream_0_nb_read_frames}
  
  
  
  W_TILES=$(bc <<< "(sqrt($OUT_WIDTH*$IN_FRAMES*$IN_HEIGHT/($IN_WIDTH*$OUT_HEIGHT))+3)")
  
  H_TILES=$(bc <<< "(sqrt($OUT_HEIGHT*$IN_FRAMES*$IN_WIDTH/($OUT_WIDTH*$IN_HEIGHT)))")
  
  
  
  W_SHRUNK=$(bc <<< "$OUT_WIDTH/$W_TILES")
  
  H_SHRUNK=$(bc <<< "$OUT_HEIGHT/$H_TILES")
  
  
  
  ffmpeg -i "${FILE}" -vf "hflip,transpose=cclock,scale=${H_SHRUNK}:${W_SHRUNK},tile=${H_TILES}x${W_TILES},transpose=clock,hflip,scale=${OUT_WIDTH}x${OUT_HEIGHT}" -an -sn -vsync 0 "${OUT}"
  
  
  
  
  
  done

  I expected the code to produce an image of every frame of the film. But instead I got a massive error message.

  The action “Run Shell Script” encountered an error: “-: line 5: /Users/jeffreymoser/21 A New Dawn.mp4: Permission denied
  
  -: line 14: ffprobe: command not found
  
  -: line 18: ffprobe: command not found
  
  (standard_in) 1: parse error
  
  (standard_in) 1: parse error
  
  (standard_in) 1: parse error
  
  (standard_in) 2: parse error
  
  (standard_in) 2: parse error
  
  -: line 29: ffmpeg: command not found
  
  -: line 5: /Users/jeffreymoser/22 Battle Hymn.mp4: Permission denied
  
  -: line 14: ffprobe: command not found
  
  -: line 18: ffprobe: command not found
  
  (standard_in) 1: parse error
  
  (standard_in) 1: parse error
  
  (standard_in) 1: parse error
  
  (standard_in) 2: parse error
  
  (standard_in) 2: parse error
  
  -: line 29: ffmpeg: command not found
  
  -: line 5: /Users/jeffreymoser/23 Reckless.mp4: Permission denied
  
  -: line 14: ffprobe: command not found
  
  -: line 18: ffprobe: command not found
  
  (standard_in) 1: parse error
  
  (standard_in) 1: parse error
  
  (standard_in) 1: parse error
  
  (standard_in) 2: parse error
  
  (standard_in) 2: parse error
  
  -: line 29: ffmpeg: command not found
  
  -: line 5: /Users/jeffreymoser/24 Showdown.mp4: Permission denied
  
  -: line 14: ffprobe: command not found
  
  -: line 18: ffprobe: command not found
  
  (standard_in) 1: parse error
  
  (standard_in) 1: parse error
  
  (standard_in) 1: parse error
  
  (standard_in) 2: parse error
  
  (standard_in) 2: parse error
  
  -: line 29: ffmpeg: command not found
  
  -: line 5: /Users/jeffreymoser/25 Wedding Bells.mp4: Permission denied
  
  -: line 14: ffprobe: command not found
  
  -: line 18: ffprobe: command not found
  
  (standard_in) 1: parse error
  
  (standard_in) 1: parse error
  
  (standard_in) 1: parse error
  
  (standard_in) 2: parse error
  
  (standard_in) 2: parse error
  
  -: line 29: ffmpeg: command not found

• Anomalie #3407 (Nouveau) : La colonne "extension" est vide concernant certaine url distante

  12 mars 2015, par Franck Dalot

  Bonjour :-)

  SPIP 3.1.0-alpha [21937] (neuf et vierge)
  Php 5.6.6
  prefix des tables : spipdev25
  Installation faite en MySQL

  Si je vais dans ecrire/ ?exec=documents&ajouter=oui que je clique sur "internet" que je fait un copier/coller d’une adresse youtube comme :
  https://youtu.be/_h1N8MDaVXA
  Puis, je clique sur "choisir", le doc n’est pas visible sous l’onglet "autres" de la médiathèque
  L’unique chose qui montre bien, que le doc est dans la base de données, est que l’onglet "autres" s’affiche "Autres (1)"
  Dans la base de données, la colonne "extension" est vide concernant ce doc
  Je vois rien dans les logs :-(
  L’unique chose qui m’apparait, ce sont trois notices, donc, je doute que que cela soit le problème
  Notice : Undefined index : extension in /.../ecrire/inc/distant.php on line 942
  Notice : Undefined index : extension in /.../plugins-dist/medias/action/ajouter_documents.php on line 120
  Notice : Undefined index : extension in /.../plugins-dist/medias/action/ajouter_documents.php on line 188

  A savoir que cela me fait pareil, avec l’adresse :
  https://www.youtube.com/watch?v=_h1N8MDaVXA

  Mais que cela fonctionne très bien avec cette adresse (même pas de notice) :
  http://contrib.spip.net