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• Shared Hosting + Static FFMPEG + PHP (or other scripting language) == failure on finding codec

  7 juillet 2012, par Ethan Allen

  here is the following environment :

  1. 1and1 shared hosting (they do not have ffmpeg installed, all good)
  2. i built a static ffmpeg binary that does not require dynamic loading of shared libaries (i built this on an Ubuntu system)
  3. ffmpeg binary is fully accessible and is able to get access
  4. executing the same command terminal or executing a php/perl script via terminal works fine...however, both scripts through a browser/web request fails with the following :

      Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
      array
  
        0 => string 'ffmpeg version git-2012-07-06-6936111 Copyright (c) 2000-2012 the FFmpeg developers' (length=83)
  
        1 => string '  built on Jul  5 2012 23:04:34 with gcc 4.4.3' (length=46)
  
        2 => string '  configuration : —prefix=' /ffmpeg' —enable-gpl —enable-libfaac —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libtheora —enable-libvorbis —enable-libvpx —enable-libx264 —enable-nonfree —enable-version3 —enable-static —disable-shared —extra-libs=-static —extra-cflags=-static' (length=323)
  
        3 => string '  libavutil      51. 64.100 / 51. 64.100' (length=40)
  
        4 => string '  libavcodec     54. 33.100 / 54. 33.100' (length=40)
  
        5 => string '  libavformat    54. 15.100 / 54. 15.100' (length=40)
  
        6 => string '  libavdevice    54.  1.100 / 54.  1.100' (length=40)
  
        7 => string '  libavfilter     3.  0.101 /  3.  0.101' (length=40)
  
        8 => string '  libswscale      2.  1.100 /  2.  1.100' (length=40)
  
        9 => string '  libswresample   0. 15.100 /  0. 15.100' (length=40)
  
        10 => string '  libpostproc    52.  0.100 / 52.  0.100' (length=40)
  
        11 => string 'Input #0, image2, from 'http://axiomchurch.co/main/wp-content/plugins/video-embed-thumbnail-generator/flash/skin/images/PlayNormal.png':' ; (length=136)
  
        12 => string '  Duration : 00:00:00.04, start : 0.000000, bitrate : N/A' (length=54)
  
        13 => string '    Stream #0:0 : Video : png, rgba, 100x100, 25 tbr, 25 tbn, 25 tbc' (length=66)
  
        14 => string '[graph 0 input from stream 0:0 @ 0x9482000] w:100 h:100 pixfmt:rgba tb:1/25 fr:25/1 sar:0/1 sws_param:flags=2' (length=109)
  
        15 => string '[output stream 0:0 @ 0x948ccc0] No opaque field provided' (length=56)
  
        16 => string '[auto-inserted scaler 0 @ 0x948d160] w:100 h:100 fmt:rgba sar:0/1 -> w:100 h:100 fmt:yuvj420p sar:0/1 flags:0x4' (length=111)
  
        17 => string '[mjpeg @ 0x948c760] ff_frame_thread_encoder_init failed' (length=55)
  
        18 => string 'Output #0, image2, to '/homepages/17/d411786663/htdocs/main/wp-content/uploads/2012/07/ffmpeg_exists_test%d.jpg' :' (length=113)
  
        19 => string '    Stream #0:0 : Video : mjpeg, yuvj420p, 100x100, q=2-31, 200 kb/s, 90k tbn, 25 tbc' (length=83)
  
        20 => string 'Stream mapping :' (length=15)
  
        21 => string '  Stream #0:0 -> #0:0 (png -> mjpeg)' (length=36)
  
        22 => string 'Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height' (length=119)
  

  The command being executed :

   /kunden/homepages/17/.../htdocs/bin/ffmpeg -i http://....co/main/wp-content/plugins/video-embed-thumbnail-generator/flash/skin/images/PlayNormal.png -ac 2 /homepages/17/.../htdocs/main/wp-content/uploads/2012/07/ffmpeg_exists_test.jpg

  You can see i have the full path of my ffmpeg binary and that it is executing. Here is what it looks like successfully via terminal :

      ffmpeg version git-2012-07-06-6936111 Copyright (c) 2000-2012 the FFmpeg developers
  
        built on Jul  5 2012 23:04:34 with gcc 4.4.3
  
        configuration : —prefix=' /ffmpeg' —enable-gpl —enable-libfaac —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libtheora —enable-libvorbis —enable-libvpx —enable-libx264 —enable-nonfree —enable-version3 —enable-static —disable-shared —extra-libs=-static —extra-cflags=-static
  
        libavutil      51. 64.100 / 51. 64.100
  
        libavcodec     54. 33.100 / 54. 33.100
  
        libavformat    54. 15.100 / 54. 15.100
  
        libavdevice    54.  1.100 / 54.  1.100
  
        libavfilter     3.  0.101 /  3.  0.101
  
        libswscale      2.  1.100 /  2.  1.100
  
        libswresample   0. 15.100 /  0. 15.100
  
        libpostproc    52.  0.100 / 52.  0.100
  
      Input #0, image2, from 'http://axiomchurch.co/main/wp-content/plugins/video-embed-thumbnail-generator/flash/skin/images/PlayNormal.png':
  
        Duration : 00:00:00.04, start : 0.000000, bitrate : N/A
  
          Stream #0:0 : Video : png, rgba, 100x100, 25 tbr, 25 tbn, 25 tbc
  
      [graph 0 input from stream 0:0 @ 0x9482000] w:100 h:100 pixfmt:rgba tb:1/25 fr:25/1 sar:0/1 sws_param:flags=2
  
      [output stream 0:0 @ 0x948ccc0] No opaque field provided
  
      [auto-inserted scaler 0 @ 0x948d160] w:100 h:100 fmt:rgba sar:0/1 -> w:100 h:100 fmt:yuvj420p sar:0/1 flags:0x4
  
      Output #0, image2, to '/homepages/17/d411786663/htdocs/main/wp-content/uploads/2012/07/ffmpeg_exists_test.jpg' :
  
        Metadata :
  
          encoder : Lavf54.15.100
  
          Stream #0:0 : Video : mjpeg, yuvj420p, 100x100, q=2-31, 200 kb/s, 90k tbn, 25 tbc
  
      Stream mapping :
  
        Stream #0:0 -> #0:0 (png -> mjpeg)
  
      Press [q] to stop, [?] for help
  
      frame=    1 fps=0.0 q=0.0 Lsize=       0kB time=00:00:00.04 bitrate=   0.0kbits/s    
  
      video:2kB audio:0kB subtitle:0 global headers:0kB muxing overhead -100.000000%
  

  The user running the script at terminal AND the apache user are the same user...i have verified this.

  Something about the environment apache is running through is killing me...i dont have access to apache error logs unfortunately.

  As a side note...i am trying to utilize the Video Embed & Thumbnail Generator for wordpress.

  Any help appreciated, thanks !

• Evolution #3081 : image_reduire sur #TEXTE dans la dist

  24 novembre 2013, par denisb -

  en réponse à la note-10 de (b b) :
  peut-être faudrait-il tester spip_meta.max_taille_vignettes dès l’appel d’un filtre image_ et sortir gentiment en cas de dépassement.

• Memcached protocol support

  15 novembre 2013, par Mikko Koppanen — Imagick

  For the past few days I’ve been adding Memcached binary protocol support to PECL memcached extension. The protocol handler provides a high-level abstraction for acting as a memcached server. There are quite a few things still missing and only binary protocol is supported at the moment, but the code seems to work reasonably well in small-scale testing.

  I am not sure whether this is useful for anyone, but at least it allows things such as quick prototyping of network servers, exposing sqlite database over memcached protocol etc.

  The code is quite simple and implementing a simple server responding to get and set would look roughly like the following :

  php

  < view plain text >

  1. < ?php
  2. // Create new server instance
  3. $server = new MemcachedServer() ;
  4.  
  5. // Create a simple storage class
  6. class Storage {
  7.   private $values = array () ;
  8.   
  9.   public function set ($key, $value, $expiration) {
  10.     $this->values [$key] = array (’value’ => $value,
  11.                    ’expires’ => time () + $expiration) ;
  12.   }
  13.  
  14.   public function get ($key) {
  15.     if (isset ($this->values [$key])) {
  16.       if ($this->values [$key] [’expires’] < time ()) {
  17.         unset ($this->values [$key]) ;
  18.         return null ;
  19.       }
  20.       return $this->values [$key] [’value’] ;
  21.     }
  22.     else
  23.       return null ;
  24.   }
  25. }
  26.  
  27. $storage = new Storage () ;
  28.  
  29. // Set callback for get command
  30. $server->on (Memcached: :ON_GET,
  31.        function ($client_id, $key, &$value, &$flags, &$cas) use ($storage) {
  32.          echo "Getting key=[$key]" . PHP_EOL ;
  33.          if (($value = $storage->get ($key))  != null)
  34.            return Memcached: :RESPONSE_SUCCESS ;
  35.  
  36.          return Memcached: :RESPONSE_KEY_ENOENT ;
  37.        }) ;
  38.  
  39. // Set callback for set command
  40. $server->on (Memcached: :ON_SET,
  41.        function ($client_id, $key, $value, $flags, $expiration, $cas, &$result_cas) use ($storage) {
  42.          echo "Setting key=[$key] value=[$value]" . PHP_EOL ;
  43.          $storage->set ($key, $value, $expiration) ;
  44.          return Memcached: :RESPONSE_SUCCESS ;
  45.        }) ;
  46.  
  47. // Run the server on localhost, port 3434. Will block
  48. $server->run ("127.0.0.1:3434") ;
  49.  ?>

  And the client that communicates with the server :

  php

  < view plain text >

  1. < ?php
  2.  
  3. $cache = new Memcached() ;
  4. $cache->setOption(Memcached: :OPT_BINARY_PROTOCOL, true) ;
  5. $cache->setOption(Memcached: :OPT_COMPRESSION, false) ;
  6. $cache->addServer(’localhost’, 3434) ;
  7.  
  8. $cache->set (’set_key1’, ’This is the first key’, 10) ;
  9. var_dump ($cache->get (’set_key1’)) ;
  10.  
  11. $cache->set (’set_key2’, ’This is the second key’, 2) ;
  12. var_dump ($cache->get (’set_key2’)) ;
  13.  ?>

  The code is still work in progress but it’s available in github : https://github.com/mkoppanen/php-memcached/tree/feature-server. Note that you need to compile libmemcached with –enable-libmemcachedprotocol and the PECL memcached extension with –enable-memcached-protocol.