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• Nginx rtmp configurations

  10 février 2015, par Mattia Malonni

  I have this problem

  My /opt/nginx/conf/nginx.conf is like this

  rtmp {
  
      server {
  
          listen 8080;
  
          chunk_size 4096;
  
  
  
          application in {
  
              live on;
  
              exec ffmpeg -i http://bstream.dyndns.org:8000/live/XXXXX/YYYYY/$name.ts -bufsize 100M -acodec aac -strict experimental -vcodec libx264 -g 30 -s 854x480 -vprofile baseline -f flv "rtmp://localhost:8080/live/%{name}";
  
          }
  
  
  
          application live {
  
              live on;
  
          }
  
  
  
      }
  
  }

  And the JWplayer is this :

  <center><div>Loading the player</div></center>
  
  <code class="echappe-js">&lt;script type=&quot;text/javascript&quot;&gt;<br />
  
    jwplayer(&quot;player&quot;).setup({<br />
  
      flashplayer: &quot;/flash/jwplayer.flash.swf&quot;,<br />
  
      file: &quot;rtmp://MYIP:8080/live/191&quot;<br />
  
    });<br />
  
  &lt;/script&gt;
  
  

  Cant understand why not working

  If i go to my stat page, i see something like this

  http://i.stack.imgur.com/9PRNw.jpg

  If i leave the player loading and try to execute the command (via terminal)

  ffmpeg -i http://bstream.dyndns.org:8000/live/XXXXX/YYYYY/191.ts -bufsize 100M -acodec aac -strict experimental -vcodec libx264 -g 30 -s 854x480 -vprofile baseline -f flv "rtmp://localhost:8080/live/191"

  Everything is OK

• Centered text in FFMPEG

  16 mai 2015, par Daniel Tan

  Is there a simple way to show centered text (i.e. centered-aligned) with the drawtext filter in ffmpeg ?

  Currently it is shown that x and y are parametric, and I used the

  x=(w-tw)/2

  to center text, but it only centers the whole text box.

• ffmpeg - recode to lower bitrate + remove audio + watermark

  26 avril 2014, par Ove Sundberg

  I’m a complete noob to ffmpeg and I’m trying to do a couple of things in the same call :

  1) recode a video to a lower bitrate

  2) remove audio

  3) add a watermark center bottom

  4) save output as .webm

  With a bit of RTFM and scouring for examples I have managed to achieve of 1, 2 and 4 with :

  ffmpeg -i hires.mp4 -c:v libvpx -crf 10 -b:v 128k -r 24 -an -c:a libvorbis output-file.webm

  This call adds a watermark center bottom :

  ffmpeg -i hires.mp4 -i watermark.png -filter_complex "overlay=main_w/2-overlay_w/2:main_h-overlay_h-10" output-file.webm

  Now I struggle to combine the two. The second -i option is the watermark. Therefore I would have thought that

  ffmpeg -i hires.mp4 -c:v libvpx -crf 10 -b:v 128k -r 24 -an -c:a libvorbis -i watermark.png -filter_complex "overlay=main_w/2-overlay_w/2:main_h-overlay_h-10"  output-file.webm

  would do the trick. It does not off course, the error I get is

  Option b:v (video bitrate (please use -b:v)) cannot be applied to input file watermark.png -- you are trying to apply an input option to an output file or vice versa. Move this option before the file it belongs to. Error parsing options for input file watermark.png. Error opening input files: Error number -22 occurred

  So I have the options all messed up. I’ve tried moving the options around but with no luck. I’d really appreciate some help here.