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• How to optimize the decoder performance in ffmpeg ?

  16 mars 2018, par air

  Hi I am trying to get the non-decoded h264 format to use in another client application using ffmpeg command. The consumer application simply reads the h264. Now How do I optimize the below command ? My machine has GPU, I see only CPU is used, is there something I can add ?

   ffmpeg -pix_fmt yuv420p -hide_banner  -y -f v4l2 -vcodec h264 -video_size 1280x1020 -i /dev/video0 out.h264

  The verbose printed for reference is pasted below -

  user@ubuntu$  ffmpeg -pix_fmt yuv420p -hide_banner  -y -f v4l2 -vcodec h264 -video_size 1280x1020 -i /dev/video0 out.h264
  
      [video4linux2,v4l2 @ 0x17e0a20] The V4L2 driver changed the video from 1280x1020 to 1280x720
  
      Input #0, video4linux2,v4l2, from '/dev/video0':
  
        Duration: N/A, start: 871.695509, bitrate: N/A
  
          Stream #0:0: Video: h264 (Constrained Baseline), yuvj420p(pc), 1280x720 [SAR 1:1 DAR 16:9], -5 kb/s, 30 fps, 30 tbr, 1000k tbn, 60 tbc
  
      No pixel format specified, yuvj420p for H.264 encoding chosen.
  
      Use -pix_fmt yuv420p for compatibility with outdated media players.
  
      [libx264 @ 0x1b80ac0] using SAR=1/1
  
      [libx264 @ 0x1b80ac0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
      [libx264 @ 0x1b80ac0] profile High, level 3.1
  
      Output #0, h264, to 'out.h264':
  
        Metadata:
  
          encoder         : Lavf56.40.101
  
          Stream #0:0: Video: h264 (libx264), yuvj420p(pc), 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 30 fps, 30 tbn, 30 tbc
  
          Metadata:
  
            encoder         : Lavc56.60.100 libx264
  
      Stream mapping:
  
        Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
      Press [q] to stop, [?] for help
  
      frame= 1242 fps= 30 q=-1.0 Lsize=    4092kB time=00:00:41.33 bitrate= 811.1kbits/s dup=0 drop=4    
  
      video:4092kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%
  
      [libx264 @ 0x1b80ac0] frame I:5     Avg QP:17.23  size: 59416
  
      [libx264 @ 0x1b80ac0] frame P:341   Avg QP:20.29  size:  8344
  
      [libx264 @ 0x1b80ac0] frame B:896   Avg QP:24.94  size:  1170
  
      [libx264 @ 0x1b80ac0] consecutive B-frames:  3.4%  1.1%  0.5% 95.0%
  
      [libx264 @ 0x1b80ac0] mb I  I16..4: 21.7% 46.7% 31.6%
  
      [libx264 @ 0x1b80ac0] mb P  I16..4:  1.8%  1.9%  0.4%  P16..4: 33.2%  5.0%  3.9%  0.0%  0.0%    skip:53.8%
  
      [libx264 @ 0x1b80ac0] mb B  I16..4:  0.1%  0.1%  0.0%  B16..8: 18.8%  0.6%  0.1%  direct: 0.5%  skip:79.8%  L0:41.7% L1:55.6% BI: 2.7%
  
      [libx264 @ 0x1b80ac0] 8x8 transform intra:46.9% inter:56.0%
  
      [libx264 @ 0x1b80ac0] coded y,uvDC,uvAC intra: 33.9% 42.8% 12.2% inter: 3.0% 5.9% 0.1%
  
      [libx264 @ 0x1b80ac0] i16 v,h,dc,p: 14% 44% 12% 30%
  
      [libx264 @ 0x1b80ac0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 32% 29%  2%  4%  3%  5%  2%  5%
  
      [libx264 @ 0x1b80ac0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 30% 13%  4%  8%  6%  7%  3%  5%
  
      [libx264 @ 0x1b80ac0] i8c dc,h,v,p: 57% 23% 17%  2%
  
      [libx264 @ 0x1b80ac0] Weighted P-Frames: Y:1.8% UV:0.0%
  
      [libx264 @ 0x1b80ac0] ref P L0: 65.9%  4.5% 21.6%  8.0%  0.1%
  
      [libx264 @ 0x1b80ac0] ref B L0: 88.2% 10.0%  1.9%
  
      [libx264 @ 0x1b80ac0] ref B L1: 95.6%  4.4%
  
      [libx264 @ 0x1b80ac0] kb/s:809.79

• FFMpeg PHP Package getting Error when loading in Laravel Queue

  18 mars 2020, par Steve Rogers

  I have created a code on Laravel to add watermark to my video with ffmpeg package. This function is working perfectly in when working with controller.

  Due to time consuming task I move the code to Laravel queue system and it successfully dispatch to queues table. but when I run php artisan queue:work the code getting error like

   Alchemy\BinaryDriver\Exception\ExecutionFailureException: ffmpeg failed to execute command '/usr/bin/ffmpeg' '-y' '-i' '/home/forge/demosite/public/frontend/video/1276841041584344642.mp4' '-threads' '12' '-vcodec' 'libx264' '-acodec' 'libmp3lame' '-b:v' '1000k' '-refs' '6' '-coder' '1' '-sc_threshold' '40' '-flags' '+loop' '-me_range' '16' '-subq' '7' '-i_qfactor' '0.71' '-qcomp' '0.6' '-qdiff' '4' '-trellis' '1' '-b:a' '256k' '-ac' '2' '-pass' '1' '-passlogfile' '/tmp/ffmpeg-passes5e6f2f04cec372bg0z/pass-5e6f2f04cecc2' '/home/forge/demosite/frontend/posts/video/org-post/n-w-post-video-org/17957037231584344836.mp4' in /home/forge/demosite/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/ProcessRunner.php:10

  In many references I can see that this issue related to permission issue of public folder. so I give 777 permission to public folder and it will not working...

  Working Code..

     $ffmpeg = FFMpeg\FFMpeg::create([
  
          'ffmpeg.binaries'  => '/usr/bin/ffmpeg',
  
          'ffprobe.binaries' => '/usr/bin/ffprobe' ,
  
          'timeout' => 3600, // The timeout for the underlying process
  
          'ffmpeg.threads' => 12, // The number of threads that FFMpeg should use
  
      ]);
  
      $video = $ffmpeg->open($this->file);
  
      $random = rand().''.time();
  
      $randomFileName = $random . ".$this->extension";
  
  
  
      /*-------------------------------original video----------------------------------------------*/
  
      $format = new FFMpeg\Format\Video\X264('libmp3lame', 'libx264');       
  
      $format->setKiloBitrate(1000)->setAudioChannels(2)->setAudioKiloBitrate(256);        
  
      // $saveLocation = getcwd() . '/frontend/video/uploads/n_w_org_vd/' . $randomFileName;
  
      $saveLocation = getcwd() . '/frontend/posts/video/org-post/n-w-post-video-org/' . $randomFileName;
  
      $video->save($format, $saveLocation);
  
      $filepath = 'frontend/posts/video/org-post/n-w-post-video-org/' . $randomFileName;
  
      Storage::put($filepath, file_get_contents($saveLocation),'public');    

• Documentation #2090 (Nouveau) : Liste des chaînes de langue magiquement reconnues pour un nouvel o...

  16 mai 2011, par RastaPopoulos -

  Il faut lister les chaînes de langue qui sont auto-magiquement reconnues par SPIP lorsqu’on crée un nouvel objet, et indiquer pour chacune ce qu’on y attend. ’icone_creer_’ => ’Ajouter un nouveau truc’, ’icone_modifier_’ => ’Modifier ce truc’, ’info_1_’ => ’Un truc’, ’info_aucun_’ => ’Aucun (...)