Recherche avancée

Sur d’autres sites (6397)

• Rails : Encoder error when converting video using FFMPEG on Heroku

  2 janvier 2013, par andmcgregor

  I'm trying to upload a video and convert the file to mp4 and reduce the file size using the paperclip-ffmpeg and paperclip gems. Everything works fine running a local server and I'm only getting this problem on heroku. I have ffmpeg installed in vendor/ffmpeg/ (I followed these steps : https://gist.github.com/3963576). Here is the code I've got and the error I'm getting :

  models/video.rb :

  class Video < ActiveRecord::Base
  
    attr_accessible :content, :user_id, :video
  
    has_attached_file :video , :styles => { 
  
      :medium => { :geometry => "500x500", :format => 'mp4',
  
          :convert_options => { :output => { :vcodec => 'libx264',
  
          :b => '1000k', :bt => '200k',
  
          :acodec => 'libfaac', :ab => '56k', :ac => 2 } } }
  
    }, :processors => [:ffmpeg]
  
  
  
    belongs_to :user
  
  end

  when I run heroku logs :

  2013-01-02T00:38:20+00:00 app[web.1]: Started POST "/videos" for 101.170.255.251 at 2013-01-02 00:38:20 +0000
  
  2013-01-02T00:38:20+00:00 app[web.1]: Processing by VideosController#create as HTML
  
  2013-01-02T00:38:20+00:00 app[web.1]:   Parameters: {"utf8"=>"✓", "authenticity_token"=>"X0IKts46TF8aFvEb1I/szFo/28omlVBXIIyJ3APz3YA=", "video"=>{"content"=>"", "video"=>#quicktime\r\n", @tempfile=#tmp/RackMultipart20130102-2-1ch9zcp>>}, "commit"=>"Post"}
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] ffmpeg -i "/tmp/sample20130102-2-4j5sgh.mov" 2>&1
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] Resize
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] Command Success
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] Making...
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] Building Destination File: 'sample20130102-2-4j5sgh' + 'mp4'
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] Destination File Built
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] Adding Source
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] Adding Geometry
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] Convert Options: 500x280
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] Adding Format
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] -i :source -y -vcodec libx264 -b 1000k -bt 200k -acodec libfaac -ab 56k -ac 2 -s 500x280 :dest
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] Extracting Target Dimensions
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] Building Parameters
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] Target Size is Available
  
  2013-01-02T00:38:20+00:00 app[web.1]: [paperclip] [ffmpeg] Keeping Aspect Ratio
  
  2013-01-02T00:38:20+00:00 app[web.1]: Command :: ffmpeg -i '/tmp/sample20130102-2-4j5sgh.mov' -y -vcodec libx264 -b 1000k -bt 200k -acodec libfaac -ab 56k -ac 2 -s 500x280 '/tmp/sample20130102-2-4j5sgh20130102-2-1mr35ix.mp4'
  
  2013-01-02T00:38:20+00:00 app[web.1]: ffmpeg version git-2013-01-01-d079d1d Copyright (c) 2000-2012 the FFmpeg developers
  
  2013-01-02T00:38:20+00:00 app[web.1]:   built on Jan  1 2013 12:59:49 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5)
  
  2013-01-02T00:38:20+00:00 app[web.1]:   configuration: --enable-shared --disable-asm --prefix=/app/vendor/ffmpeg
  
  2013-01-02T00:38:20+00:00 app[web.1]:   libavfilter     3. 30.102 /  3. 30.102
  
  2013-01-02T00:38:20+00:00 app[web.1]:   libavcodec     54. 85.100 / 54. 85.100
  
  2013-01-02T00:38:20+00:00 app[web.1]:   libavdevice    54.  3.102 / 54.  3.102
  
  2013-01-02T00:38:20+00:00 app[web.1]:   libavutil      52. 13.100 / 52. 13.100
  
  2013-01-02T00:38:20+00:00 app[web.1]:   libswresample   0. 17.102 /  0. 17.102
  
  2013-01-02T00:38:20+00:00 app[web.1]:   libswscale      2.  1.103 /  2.  1.103
  
  2013-01-02T00:38:20+00:00 app[web.1]:   libavformat    54. 58.100 / 54. 58.100
  
  2013-01-02T00:38:21+00:00 app[web.1]:     creation_time   : 2013-01-02 00:36:58
  
  2013-01-02T00:38:21+00:00 app[web.1]:     minor_version   : 0
  
  2013-01-02T00:38:21+00:00 app[web.1]:     major_brand     : qt  
  
  2013-01-02T00:38:21+00:00 app[web.1]: Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/tmp/sample20130102-2-4j5sgh.mov':
  
  2013-01-02T00:38:21+00:00 app[web.1]:     model           : iPhone 4
  
  2013-01-02T00:38:21+00:00 app[web.1]:     compatible_brands: qt  
  
  2013-01-02T00:38:21+00:00 app[web.1]:     model-eng       : iPhone 4
  
  2013-01-02T00:38:21+00:00 app[web.1]:     make-eng        : Apple
  
  2013-01-02T00:38:21+00:00 app[web.1]:     date-eng        : 2012-12-28T00:39:34+1100
  
  2013-01-02T00:38:21+00:00 app[web.1]:     encoder         : 6.0
  
  2013-01-02T00:38:21+00:00 app[web.1]:     encoder-eng     : 6.0
  
  2013-01-02T00:38:21+00:00 app[web.1]:   Duration: 00:00:00.03, start: 0.000000, bitrate: 9465 kb/s
  
  2013-01-02T00:38:21+00:00 app[web.1]:     Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 75 kb/s
  
  2013-01-02T00:38:21+00:00 app[web.1]:     date            : 2012-12-28T00:39:34+1100
  
  2013-01-02T00:38:21+00:00 app[web.1]:       creation_time   : 2013-01-02 00:36:58
  
  2013-01-02T00:38:21+00:00 app[web.1]:     make            : Apple
  
  2013-01-02T00:38:21+00:00 app[web.1]:   Metadata:
  
  2013-01-02T00:38:21+00:00 app[web.1]:     Metadata:
  
  2013-01-02T00:38:21+00:00 app[web.1]:       handler_name    : Core Media Data Handler
  
  2013-01-02T00:38:21+00:00 app[web.1]:     Stream #0:1(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 8605 kb/s, 30 fps, 30 tbr, 600 tbn, 1200 tbc
  
  2013-01-02T00:38:21+00:00 app[web.1]:     Metadata:
  
  2013-01-02T00:38:21+00:00 app[web.1]:       handler_name    : Core Media Data Handler
  
  2013-01-02T00:38:21+00:00 app[web.1]: Unknown encoder 'libx264'
  
  2013-01-02T00:38:21+00:00 app[web.1]: Please use -b:a or -b:v, -b is ambiguous
  
  2013-01-02T00:38:21+00:00 app[web.1]:       creation_time   : 2013-01-02 00:36:58
  
  2013-01-02T00:38:21+00:00 app[web.1]: [paperclip] An error was received while processing: #
  
  2013-01-02T00:38:21+00:00 app[web.1]:   Rendered videos/new.html.erb within layouts/application (3.2ms)
  
  2013-01-02T00:38:21+00:00 heroku[router]: at=info method=POST path=/videos host=stark-sea-5654.herokuapp.com fwd=101.170.255.251 dyno=web.1 queue=0 wait=0ms connect=3ms service=3685ms status=200 bytes=1878
  
  2013-01-02T00:38:21+00:00 app[web.1]:   Rendered layouts/_footer.html.erb (0.0ms)
  
  2013-01-02T00:38:21+00:00 app[web.1]: Completed 200 OK in 342ms (Views: 124.8ms | ActiveRecord: 10.4ms)
  
  2013-01-02T00:38:21+00:00 app[web.1]:   Rendered layouts/_header.html.erb (1.2ms)

  Everything works fine until the message Unknown encoder 'libx264' so I'm thinking it's something to do with ffmpeg perhaps ?

• Simulating TV noise

  16 février 2017, par Alexander Kulyakhtin

  I have googled a bit but was never able to find an answer. What should be my first approach to simulate a video and audio noise from TV on screen ? I mean, when my TV antenna is removed but the TV is still on (like they show in Japanese horror movies sometimes). I can use ffmpeg or any other technique but what is the simplest possible form of the signal ?

• Run ffmpeg using shell_exec from a file called by AJAX

  20 décembre 2012, par user1255617

  Good morning,

  I will do my best to phrase a "thoughtful" and "helpful" question for all regarding running FFMPEG using shell_exec from a file called by AJAX. First I will start by listing my current code.

  AJAX script

          <code class="echappe-js">&lt;script&gt;<br />
  
              var xmlhttp;<br />
  
              if (window.XMLHttpRequest){// code for IE7+, Firefox, Chrome, Opera, Safari<br />
  
                xmlhttp=new XMLHttpRequest();<br />
  
              }else{// code for IE6, IE5<br />
  
                xmlhttp=new ActiveXObject(&quot;Microsoft.XMLHTTP&quot;);<br />
  
              }<br />
  
              xmlhttp.onreadystatechange=function(){<br />
  
                if (xmlhttp.readyState==4 &amp;amp;&amp;amp; xmlhttp.status==200){<br />
  
                    //Do something<br />
  
                }<br />
  
              }<br />
  
              xmlhttp.open(&quot;GET&quot;,&quot;video_convert.php&quot;,true);<br />
  
              xmlhttp.setRequestHeader(&quot;Content-type&quot;,&quot;application/x-www-form-urlencoded&quot;);<br />
  
              xmlhttp.send(id=&amp;lt;?php echo $video_upload_result; ?&gt;);<br />
  
          &lt;/script&gt;
  
  

  PHP Code

  $destination = "files/videos/";
  
  $ffmpeg = '/ffmpeg/ffmpeg';
  
  $videoid = mysql_clean($_GET['id']);
  
  
  
  $sql = "SELECT file_name FROM cb_video WHERE videoid = '$videoid' ";
  
  $result = mysql_query($sql);
  
  $row = mysql_fetch_assoc($result);
  
  
  
  $file_old = glob('files/videos/'.$file_name.'.*');
  
  
  
  shell_exec($ffmpeg." -i '/var/www/html/".$file_old[0]."' -ar 44100 /var/www/html/".$destination.$file_name.".flv");

  FFMPEG is installed and working properly as I have used it elsewhere on the site and have attempted a file conversion using PuTTY. I am able to run a PHP file called by AJAX as I have done it in a separate instance on this site. The only thing I can think of is that the shell_exec isn't running properly, which I have used elsewhere, since it is in a separate file called by ajax or else it is being closed pre-maturely. I have also tested this code in a main file and it works properly until I try to call the separate file with it in it.

  So, my question is can this code actually work and if so what steps should I take to get it working ?

  Also I would greatly appreciate it if before closing my questions I had a chance to defend or rephrase them to properly suit this boards high standards for questions if I have somehow failed it in any way.

  Thank you.