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• Raspberry Pi > CRTMPServer > JWplayer

  18 juin 2015, par user3147697

  I’m trying to get a raspberry pi to stream to a crtmpserver, and from there to a webpage with JWplayer.

  I am able to send video successfully to crtmpserver with this :

  raspivid -t 0 -w 960 -h 540 -fps 25 -b 500000 -vf -o - | ffmpeg -i - -acodec aac -ac 2 -strict experimental -ab 160k -vcodec libx264 -preset slow -profile:v baseline -level 30 -maxrate 10000000 -bufsize 10000000 -b 1000k -f rtsp -metadata title=teststream rtsp ://192.168.1.20:5544/flvplayback

  But am having trouble viewing the stream from crtmpserver using this is my html jwplayer code :

  <code class="echappe-js">&lt;script type=&quot;text/javascript&quot;&gt;<br />
  
      jwplayer(&quot;myElement-teststream&quot;).setup({<br />
  
          playlist: [{<br />
  
              sources:[{<br />
  
                  file: 'rmtp://192.168.1.20:1935/live/teststream&quot;<br />
  
              }]<br />
  
          }],<br />
  
          height: 1080,<br />
  
          primary: 'flash',<br />
  
          width: 1920<br />
  
      });<br />
  
      &lt;/script&gt;
  
  

  What am I missing ?

• Why am I getting an error for stream #0.1 ?

  30 juillet 2014, par Rob Avery IV

  I’m converting videos using ffmpeg-php. Here is my code :

      // Set our source file
  
      $srcFile = $uploadFilm.".".$film_type;
  
      $destFile = $uploadFilm;
  
      $ffmpegPath = "ffmpeg";
  
  
  
      // Create our FFMPEG-PHP class
  
      $ffmpegObj = new ffmpeg_movie($srcFile);
  
  
  
      // Save our needed variables
  
      $srcWidth = makeMultipleTwo($ffmpegObj->getFrameWidth());
  
      $srcHeight = makeMultipleTwo($ffmpegObj->getFrameHeight());
  
      $srcFPS = $ffmpegObj->getFrameRate();
  
      if($ffmpegObj->hasAudio()){
  
          $srcAB = intval($ffmpegObj->getAudioBitRate()/1000);
  
          $srcAR = $ffmpegObj->getAudioSampleRate();
  
      }else{
  
          $srcAB = 0;
  
          $srcAR = 0;
  
      }
  
  
  
      // Call our convert using exec()
  
      //$command = $ffmpegPath . " -i " . $srcFile . " -ar " . $srcAR . " -ab " . $srcAB . "k -f flv -s " . $srcWidth . "x" . $srcHeight . " " . $destFile;
  
      //$command = "whoami";
  
      $command = $ffmpegPath . ' -i ' .'"'. $srcFile . '" -ar ' . $srcAR . ' -ab ' . $srcAB . 'k -f flv -s ' . $srcWidth . 'x' . $srcHeight . ' "' . $destFile . '" 2>&1';
  
      $outputCommand = array();
  
      $status = 1;
  
      exec($command, $outputCommand, $status);

  The output gives out this error at the end :

  Error while opening encoder for output stream #0.1 - maybe incorrect parameters such as bit_rate, rate, width or height

  I know that both $srcAB and $srcAR have values because this is the command this being ran :

  ffmpeg -i source -ar 48000 -ab 160k -f flv -s 1920x1080 destination

  Of course, after the command is executed, the "convert video" has a size 0, which means it didn’t convert it.

  What am I missing here ?

  EDIT : Here is my full output :

  FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers
  
    built on Jul 18 2014 08:41:45 with gcc 4.4.7 20120313 (Red Hat 4.4.7-3)
  
    configuration: --enable-libmp3lame --disable-mmx --enable-shared
  
    libavutil     50.36. 0 / 50.36. 0
  
    libavcore      0.16. 1 /  0.16. 1
  
    libavcodec    52.108. 0 / 52.108. 0
  
    libavformat   52.93. 0 / 52.93. 0
  
    libavdevice   52. 2. 3 / 52. 2. 3
  
    libavfilter    1.74. 0 /  1.74. 0
  
    libswscale     0.12. 0 /  0.12. 0
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/path/to/file/bbb_sunflower_1080p_30fps_normal.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 1
  
      compatible_brands: isomavc1
  
      creation_time   : 2013-12-16 17:44:39
  
      title           : Big Buck Bunny, Sunflower version
  
      artist          : Blender Foundation 2008, Janus Bager Kristensen 2013
  
      comment         : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net
  
      genre           : Animation
  
      composer        : Sacha Goedegebure
  
    Duration: 00:10:34.60, start: 0.000000, bitrate: 3481 kb/s
  
      Stream #0.0(und): Video: h264, yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 2998 kb/s, 30 fps, 30 tbr, 30k tbn, 60 tbc
  
      Metadata:
  
        creation_time   : 2013-12-16 17:44:39
  
      Stream #0.1(und): Audio: mp3, 48000 Hz, 2 channels, s16, 160 kb/s
  
      Metadata:
  
        creation_time   : 2013-12-16 17:44:42
  
      Stream #0.2(und): Audio: ac3, 48000 Hz, 6 channels, s16, 320 kb/s
  
      Metadata:
  
        creation_time   : 2013-12-16 17:44:42
  
  [buffer @ 0x2231e20] w:1920 h:1080 pixfmt:yuv420p
  
  Output #0, flv, to '/path/to/file/bbb_sunflower_1080p_30fps_normal.flv':
  
      Stream #0.0(und): Video: flv, yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 30 tbc
  
      Metadata:
  
        creation_time   : 2013-12-16 17:44:39
  
      Stream #0.1(und): Audio: libmp3lame, 48000 Hz, 6 channels, s16, 160 kb/s
  
      Metadata:
  
        creation_time   : 2013-12-16 17:44:42
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
    Stream #0.1 -> #0.1
  
  Error while opening encoder for output stream #0.1 - maybe incorrect parameters such as bit_rate, rate, width or height

• Putting two videos next to each other, improving performance

  17 mai 2018, par Zurechtweiser

  I am using this command I put together with quite some effort to put two videos next to each other.

  ffmpeg -y -i i1.mov -i i2.mp4 -filter_complex

  [0:v]scale=1824:1026,pad=width=1920:height=1080:x=0:y=27:color=black,crop=1641:923:170:79,scale=1920:1080[vl] ;

  [1:v]scale=2016:1134,crop=1759:1080:48:27,pad=width=1920:height=1080:x=161:y=0:color=black,crop=1641:923:170:79,scale=1920:1080[vr] ;

  [vl][vr]hstack=shortest=1 -c:v libx264 -crf 23 -preset veryfast output

  It works, but it is not elegant.

  How to shorten it and make it more performant ?