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• Malformed header from CGI script

  13 janvier 2014, par user3188518

  This message is driving me crazy :

  Malformed header from CGI script:
  
  ffmpeg version 1.2.1 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on May 10 2013 16:31:05 with gcc 4.8.0 (GCC) 20130502 (prerelease)
  
    configuration: --prefix=/usr --disable-debug --disable-static --enable-avresample --enable-dxva2 --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-postproc --enable-runtime-cpudetect --enable-shared --enable-vdpau --enable-version3 --enable-x11grab
  
    libavutil      52. 18.100 / 52. 18.100
  
    libavcodec     54. 92.100 / 54. 92.100
  
    libavformat    54. 63.104 / 54. 63.104
  
    libavdevice    54.  3.103 / 54.  3.103
  
    libavfilter     3. 42.103 /  3. 42.103
  
    libswscale      2.  2.100 /  2.  2.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  2.100 / 52.  2.100
  
  Guessed Channel Layout for  Input Stream #0.0 : stereo
  
  Input #0, wav, from '/projekt/aplikacja/app/92ed9478ecfa4a4dfb176f417d4ef66c/2014-01-12-220148_sample_1.wav':
  
    Duration: 00:02:35.62, bitrate: 1411 kb/s
  
      Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s
  
  Output #0, wav, to '/projekt/aplikacja/app/webroot/files/preview/2014-01-12-234038_52d327f6b2939.wav':
  
    Metadata:
  
      ISFT            : Lavf54.63.104
  
      Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, 1411 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  size=     864kB time=00:00:05.01 bitrate=1411.3kbits/s    
  
  video:0kB audio:864kB subtitle:0 global headers:0kB muxing overhead 0.009042%
  
  Status: 302
  
  Location: http://www.example.org/
  
  Content-type: text/html

  After executing this function :

     public function createpreview(){
  
           if ($this->request->is('post')) {
  
             foreach($this->request->data['TrackId'] as $key => $value){
  
                  $TrackId[] = $key;
  
              }
  
              $this->Track->recursive = -1;
  
              $view =  $this->Track->find('all', array(
  
                                'conditions' => array(
  
                                "Track.id" => $TrackId
  
                                 )));
  
              ini_set('date.timezone', 'Europe/London');
  
  
  
             foreach ($view as $v){
  
                $comand_1 = 'ffmpeg -i '.APP.'92ed9478ecfa4a4dfb176f417d4ef66c'.DS. $v['Track']['filename'].' 2>&1';
  
                $time_data = shell_exec($comand_1);
  
                $search = '/Duration: (.*?),/';
  
                $duration = preg_match($search, $time_data, $matches, PREG_OFFSET_CAPTURE, 3);
  
                $time = explode('.', $matches[1][0]);
  
                $time = explode(":", $time[0]);
  
                $seconds = $time[0]*3600 + $time[1]*60 + $time[2];
  
                if ($seconds >= 30){
  
  
  
               $now = date('Y-m-d-His');
  
                   $prew_file_name = $now .'_'. uniqid().'.wav';
  
                   $comand_2 = 'ffmpeg  -ss 00:00:25.000 -analyzeduration 99999999  -i '.APP.'92ed9478ecfa4a4dfb176f417d4ef66c'.DS. $v['Track']['filename'].' -t 5 -c:v copy -c:a copy '.WWW_ROOT.'files'.DS.'preview'.DS.$prew_file_name;
  
                      $t = shell_exec($comand_2);
  
                      $this->Track->updateAll(array('Track.preview' => "'.$prew_file_name.'"), array('Track.id' => $v['Track']['id']));
  
                    }
  
                 }
  
  
  
          }
  
           header('Location: http://www.example.org/');
  
         // $this->redirect(array('controller'=>'albums', 'action'=>'menage_index'));
  
     }

  As far as i know this shell_exec($comand_2) couses error (after i comment it out, it redirects me correctly).Googling this didn't gave me answers, the wierd part is previews aka shell_exec($comand_2) are made and fine, i just can't get it to redirect me. I tried non cake way but it doesn't work either.

  What I'm doing wrong ?

• "matches no streams" issue in ffmpeg complex_filter

  17 décembre 2023, par Nimderp

  i'm my goal is to do this with ffmpeg complex_filters :

  


  I have a background 1080 vid and like to slide in some overlay graphics and texts. So my input is the vid and 2 jpg files. The files should flide in to a position over the background-video, fade in in the same time, stay a few seconds and then fade out. Additionally, a text should be displayed.

  


  My main problem is, that it works with only one input jpg, but when i add the second block i got a thar error here :

  


  [fc#0 @ 000001bf9d0d0c00] Stream specifier 'merge1C:v' in filtergraph description [1:v]format=pix_fmts=yuva420p,scale=765:1083,fade=in:st=0:d=1:alpha=1 [overlay1A], [0:v][overlay1A] overlay=x='if(lte(-w+(t)*1065,300),-w+(t)*1065,300)':y=300:enable='between(t,0,1):shortest=1'[merge1A]; [1:v]format=pix_fmts=yuva420p,scale=765:1083,fade=out:st=3:d=1:alpha=1 [overlay1B], [merge1A][overlay1B] overlay=300:300:enable='between(t,1,4)':shortest=1[merge1B]; [merge1B] drawtext=alpha=if(lt(t\,0.3)\,0\,if(lt(t\,1.3)\,(t-0.3)/1\,if(lt(t\,3)\,1\,if(lt(t\,4)\,(1-(t-3))/1\,0)))):fontcolor=ffffff:fontsize=64:text=test:x=200:y=200 [merge1C]; [2:v]format=pix_fmts=yuva420p,scale=765:1083,fade=in:st=4:d=1:alpha=1 [overlay2A], [merge1C:v][overlay2A] overlay=x='if(lte(-w+(t)*1065,300),-w+(t)*1065,300)':y=300:enable='between(t,4,5):shortest=1'[merge2A]; [2:v]format=pix_fmts=yuva420p,scale=765:1083,fade=out:st=7:d=1:alpha=1 [overlay2B], [merge2A][overlay2B] overlay=300:300:enable='between(t,5,8)':shortest=1[merge2B]; [merge2B] drawtext=alpha=if(lt(t\,4.3)\,0\,if(lt(t\,5.3)\,(t-4.3)/1\,if(lt(t\,7)\,1\,if(lt(t\,8)\,(1-(t-7))/1\,0)))):fontcolor=ffffff:fontsize=64:text=test:x=200:y=200 [merge2C]; matches no streams.
Error initializing complex filters: Invalid argument


  


  My ffmpeg command looks like this :

  


  ffmpeg -i concat-video.mp4  -loop 1 -i card1.jpg -loop 1 -i card2.jpg -filter_complex "[1:v]format=pix_fmts=yuva420p,scale=765:1083,fade=in:st=0:d=1:alpha=1 [overlay1A], [0:v][overlay1A] overlay=x='if(lte(-w+(t)*1065,300),-w+(t)*1065,300)':y=300:enable='between(t,0,1):shortest=1'[merge1A]; [1:v]format=pix_fmts=yuva420p,scale=765:1083,fade=out:st=3:d=1:alpha=1 [overlay1B], [merge1A][overlay1B] overlay=300:300:enable='between(t,1,4)':shortest=1[merge1B]; [merge1B] drawtext=alpha=if(lt(t\,0.3)\,0\,if(lt(t\,1.3)\,(t-0.3)/1\,if(lt(t\,3)\,1\,if(lt(t\,4)\,(1-(t-3))/1\,0)))):fontcolor=ffffff:fontsize=64:text=test:x=200:y=200 [merge1C]; [2:v]format=pix_fmts=yuva420p,scale=765:1083,fade=in:st=4:d=1:alpha=1 [overlay2A], [merge1C:v][overlay2A] overlay=x='if(lte(-w+(t)*1065,300),-w+(t)*1065,300)':y=300:enable='between(t,4,5):shortest=1'[merge2A]; [2:v]format=pix_fmts=yuva420p,scale=765:1083,fade=out:st=7:d=1:alpha=1 [overlay2B], [merge2A][overlay2B] overlay=300:300:enable='between(t,5,8)':shortest=1[merge2B]; [merge2B] drawtext=alpha=if(lt(t\,4.3)\,0\,if(lt(t\,5.3)\,(t-4.3)/1\,if(lt(t\,7)\,1\,if(lt(t\,8)\,(1-(t-7))/1\,0)))):fontcolor=ffffff:fontsize=64:text=test:x=200:y=200 [merge2C];" -pix_fmt yuva420p -map "[merge2C]" output.mp4


  


  or here a little bit formatted for better readability :

  


  ffmpeg -i concat-video.mp4  -loop 1 -i card1.jpg -loop 1 -i card2.jpg -filter_complex "

# start of block for first input jpg
[1:v]format=pix_fmts=yuva420p,scale=765:1083,fade=in:st=0:d=1:alpha=1 [overlay1A],
[0:v][overlay1A] overlay=x='if(lte(-w+(t)*1065,300),-w+(t)*1065,300)':y=300:enable='between(t,0,1):shortest=1'[merge1A];
[1:v]format=pix_fmts=yuva420p,scale=765:1083,fade=out:st=3:d=1:alpha=1 [overlay1B],
[merge1A][overlay1B] overlay=300:300:enable='between(t,1,4)':shortest=1[merge1B];
[merge1B] drawtext=alpha=if(lt(t\,0.3)\,0\,if(lt(t\,1.3)\,(t-0.3)/1\,if(lt(t\,3)\,1\,if(lt(t\,4)\,(1-(t-3))/1\,0)))):fontcolor=ffffff:fontsize=64:text=test:x=200:y=200 [merge1C];

# start of block for second input jpg
[2:v]format=pix_fmts=yuva420p,scale=765:1083,fade=in:st=4:d=1:alpha=1 [overlay2A],
[merge1C:v][overlay2A] overlay=x='if(lte(-w+(t)*1065,300),-w+(t)*1065,300)':y=300:enable='between(t,4,5):shortest=1'[merge2A];
[2:v]format=pix_fmts=yuva420p,scale=765:1083,fade=out:st=7:d=1:alpha=1 [overlay2B],
[merge2A][overlay2B] overlay=300:300:enable='between(t,5,8)':shortest=1[merge2B];
[merge2B] drawtext=alpha=if(lt(t\,4.3)\,0\,if(lt(t\,5.3)\,(t-4.3)/1\,if(lt(t\,7)\,1\,if(lt(t\,8)\,(1-(t-7))/1\,0)))):fontcolor=ffffff:fontsize=64:text=test:x=200:y=200 [merge2C];

" 
-pix_fmt yuva420p -map "[merge2C]" output.mp4


  


  Hope somebody can give me a hint, it's driving me nuts :D

  


  I tried several syntax changes, but always got an error.

  


  The issue seems to be the chain between the output "merge1C" (which includes the fade, slide, text, and fadout of the first jpg overlay) to the second block for the other jpg.

  


• Trim Overlay memory issue

  4 juillet 2019, par Костянтин Тюртюбек

  Greetings fellow FFmpeg users,

  We are experiencing a strange memory leek issue (or maybe just doing something really wrong) and need some directions on how to debug it.

  What are we trying to achieve :

  Process a conference recording that includes multiple user streams, each in its own separate file (all files are mp4/opus).

  • Make a dynamic scene from a set of recordings, based on their volume level at set point of time.
  • The scene must include two parts : smaller grid of all the participants videos, bigger grid of currently talking people. Something like Google Hangouts or Skype does in their applications.

  What went wrong :

  • Memory footprint started unpredictably skyrocketing for some reason during montage

  What are we using :

  First FFmpeg command that reads filter_complex_script from file and adds drawbox as a talking indication on each video source file, when its volume is over a set threshold.

  Second FFmpeg command that reads filter_complex_script from file and :

  • takes an input file (using 0:v),
  • trims a part of it, when the user was talking,
  • scales it according to the amount of concurrently talking users,
  • pads to that resolution (in case if user video is smaller)

  filter_complex command using SELECT :

  [0]select='between(t, 1, 2)',  scale=762:428:force_original_aspect_ratio=decrease,pad=763:429:(ow-iw)/2:(oh-ih)/2[stream-0-workspace-scale-1-1];
  
  
  
  [block-2-grid][stream-0-workspace-scale-1-1]
  
  overlay=repeatlast=1:shortest=0:x=10:y=316:enable='between(t, 1, 2)'
  
  [block-2-workspace-1]; 

  filter_complex command using TRIM :

  [input-file-tag] 
  
  trim=start=#{start}:duration=#{duration},
  
  setpts=PTS-STARTPTS,
  
  scale=#{w-1}:#{h-1}:force_original_aspect_ratio=decrease,
  
  pad=#{w}:#{h}:(ow-iw)/2:(oh-ih)/2
  
  [input-file-trimmed];
  
  
  
  [previous-block-tag] 
  
  overlay=repeatlast=1:shortest=0:x=#{x}:y=#{y}:enable='between(t, #{from}, #{to})'
  
  [next-block-tag]

  We have tried going the TRIM command way, tried the SELECT command way. Problem is, both take insane amounts of ram during execution.

  Examples and more description :

  • Lets assume that only two of the five inputs have the volume above a
    certain volume threshold from second two to five.

  • We are trying to display only them according to some overlay math.

  • Cropped commands in human readable form : https://pastebin.com/YwrnRgnA

  • Full FFmpeg command is way too long to read through, that is the reason we started using filter_complex_script and loading it from file

  • Sometimes one block of video conference may have up to 300+
    intermediate overlays, which leads to the memory issue described. We were expecting the memory footprint to be similar to the amount of input files or maybe two-to-three times higher. However, we reach 15Gb or RAM usage withing the first two minutes of montage, while the input files are no bigger than 200Mb.

  What have we done in terms of debugging :

  • We had been using split at first, but quickly figured out that split
    does in fact copy each input and load it in memory, so we had to
    ditch that approach.

  • As matter of fact we moved to using the input files themselves, so
    the problem lies elsewhere.

  • To clarify, we have split our ffmpeg command into two separate ones.
    First one overlays the talking box animation using drawbox as well as
    user avatar and name. It outputs new video files which we than use in
    the command described above as direct input files tags, like 0:v, 1:v
    etc.

  Thank you for taking time reading through our issue.
  We sure hope that you can help us narrow it down.
  Please feel free to ask for any additional information or descriptions if needed.

  Have a good day !