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• Encode uncompressed avi from webcam

  17 août 2013, par shaun

  I have to record videos for a project I'm doing. Two of these are USB cameras and another is a n IP overhead camera.All three are connected to a laptop computer. After recording the videos I need to be able to open them in an editor (not for editing particularly but for modeling stuff in them for which I need a timeline). I have chosen Sony Vegas Pro for my editor. I have been able to record the uncompressed avi using gstreamer with this command :

  gst-launch v4l2src device=/dev/video0 ! 'video/x-rawyuv,width=640,height=480,framerate=10/1' ! mux. avimux name=mux ! filesink location=temp.avi

  I had to set the framerate to 10 because I was using two USB cameras and a framerate of 30 on both could not be accomodated in the bandwidth of the USB controller. I do not care about audio in my file so I don't grab audio. Similary, while encoding I wouldn't care about audio as well. This is raw uncompressed avi. I was not able to open this in Sony Vegas Pro. I believe I need to encode this uncompressed avi using a codec that will be opened by Sony Vegas Pro (I don't know which codecs Sony likes, so I'll probably try different ones until one of them opens).

  For encoding this video, I have several options : mencoder, ffmpeg, gstreamer. But I am not able to figure out how to use these tools to get what I want. Ideally, I would like just to sort of "insert" a codec with other settings remaining the same. I don't really care about the how much space the resulting video takes since the length of the videos are not going to be more than 3 minutes and I have space available, so lossless codecs also work. I believe Sony reads mpeg avi's so if I can get that, it'll be great.

  Thanks for reading and I appreciate all the help.

• Evolution #3039 (Nouveau) : Spip 2.1 : prise en compte des champs_extra dans editer_artcile

  11 août 2013, par Arnaud Dupin de Beyssat

  Bonjour
  Après la création d’un formulaire Spip (sans usage de plugin) remplissant un article avec champs_extra, je me suis aperçu que les champs_extra n’étaient pas pris en compte.
  Après recherche, j’ai contaté que le pb venait du fichier action/editer_article qui limite la saisie aux champs Spip.
  Je l’ai donc patché en ajoutant les intitulés de mes champs extra, comme suit :

  function articles_set($id_article, $set=null)
  $err = ’’ ;
  // unifier $texte en cas de texte trop long
  trop_longs_articles() ;

  $c = array();<br />    foreach (array(<br />        'surtitre', 'titre', 'soustitre', 'descriptif',<br />        'nom_site', 'url_site', 'chapo', 'texte', 'ps'<br />//patch ADB        <br />        , 'latitude', 'longitude', 'cartes', 'zone_meteo', 'capitainerie', 'secours', 'freq_radio', 'distances', 'svce_meteo', 'jour', 'nuit', 'dangers', 'feux', 'acces', 'te', 'places', 'equipement', 'services', 'avitaillement', 'location', 'svce_divers', 'tourisme', 'mouillage', 'decor'<br />// fin patch ADB<br />    ) as $champ)<br />        $c[$champ] = _request($champ,$set);

  De ce fait les champs extra sont remplis.

  Serait-il possible, pour les Spip 2.1, de faire en sorte que les champs_extra existant éventuellement dans la table Articles soient automatiquement pris en compte ?

  Merci

• FFmpeg will not run from php

  15 mars 2015, par user2392940

  This is a live server i am on a Windows 2008 Web Edition R2 server with IIS7.

  I have tried all of this locally and it works perfectly. At first i thought this may have been a permisson issue i gave all ffmpeg folders and output folders full control. I also checked the php ini file to make sure exec is enabled.

  I was intially running the exec() function i later changed it to the system() function to see what ffmpeg was outputting. With the system() function it returns the error "Acess is denied". All of my research points to a IIS setting or Application Pool not having the correct permission. Any help would be much appreciated.

  FFmpeg location : C :\ffmpeg\bin\ffmpeg.exe

  I have been working on this for nearly a week even my server provider has no answer on why ffmpeg will not run from php. I believe this is a little deeper than full paths. It’s obviously a permission problem but the question is where is the permission problem ?

  It also seems that no .exe file can be executed from php.

  system ("$ffmpeg -i yourvideo/.mp4 -threads 1 -ss 20 -b 10k  -s 240x180 -vf fps=fps=1/20 -vframes 12 -aspect 4:3 thumbs/yourvideo/yourvideo.%01d.jpg 2>&1");