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• Revision 30796 : On passe en version 0.6 avec tout le code revu et plus ou moins corrigé

  10 août 2009, par kent1@… — Log

  On passe en version 0.6 avec tout le code revu et plus ou moins corrigé

• FFPLAY produces black video output [closed]

  28 janvier 2020, par RooterTooter

  I’m having an issue playing videos with ffplay on an embedded arm device (imx6). The OS is based on yocto sumo and uses the meta-freescale layers for imx6.

  I have a number of test videos in different formats that I am sure are formatted correctly (They play fine on my laptop with ffplay). FFMPEG has all the necessary codecs, detects my streams, it plays audio without an issue, but the video is just black.

  It’s worth nothing that I’m running X11 and have xterm running, and when ffplay is trying to play, a black box will pop up on the screen in the correct dimensions like it thinks it’s decoding video, but it’s always blank.

  $DISPLAY=:0 ffplay test.mp4
  
  ffplay version 3.3.3 Copyright (c) 2003-2017 the FFmpeg developers
  
    built with gcc 7.3.0 (GCC)
  
    configuration: --disable-stripping --enable-pic --enable-shared --enable-pthreads --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --disable-libxcb-shape --enable-nonfree --cross-prefix=arm-poky-linux-gnueabi- --ld='arm-poky-linux-gnueabi-gcc -march=armv7-a -mfpu=neon -mfloat-abi=hard -mcpu=cortex-a9 --sysroot=/home/builder/imx-yocto-bsp/machine/tmp/work/cortexa9hf-neon-poky-linux-gnueabi/ffmpeg/3.3.3-r0/recipe-sysroot' --cc='arm-poky-linux-gnueabi-gcc -march=armv7-a -mfpu=neon -mfloat-abi=hard -mcpu=cortex-a9 --sysroot=/home/builder/imx-yocto-bsp/machine/tmp/work/cortexa9hf-neon-poky-linux-gnueabi/ffmpeg/3.3.3-r0/recipe-sysroot' --cxx='arm-poky-linux-gnueabi-g++ -march=armv7-a -mfpu=neon -mfloat-abi=hard -mcpu=cortex-a9 --sysroot=/home/builder/imx-yocto-bsp/machine/tmp/work/cortexa9hf-neon-poky-linux-gnueabi/ffmpeg/3.3.3-r0/recipe-sysroot' --arch=arm --target-os=linux --enable-cross-compile --extra-cflags=' -O2 -pipe -g -feliminate-unused-debug-types -fdebug-prefix-map=/home/builder/imx-yocto-bsp/machine/tmp/work/cortexa9hf-neon-poky-linux-gnueabi/ffmpeg/3.3.3-r0=/usr/src/debug/ffmpeg/3.3.3-r0 -fdebug-prefix-map=/home/builder/imx-yocto-bsp/machine/tmp/work/cortexa9hf-neon-poky-linux-gnueabi/ffmpeg/3.3.3-r0/recipe-sysroot-native= -fdebug-prefix-map=/home/builder/imx-yocto-bsp/machine/tmp/work/cortexa9hf-neon-poky-linux-gnueabi/ffmpeg/3.3.3-r0/recipe-sysroot= -march=armv7-a -mfpu=neon -mfloat-abi=hard -mcpu=cortex-a9 --sysroot=/home/builder/imx-yocto-bsp/machine/tmp/work/cortexa9hf-neon-poky-linux-gnueabi/ffmpeg/3.3.3-r0/recipe-sysroot' --extra-ldflags='-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed' --sysroot=/home/builder/imx-yocto-bsp/machine/tmp/work/cortexa9hf-neon-poky-linux-gnueabi/ffmpeg/3.3.3-r0/recipe-sysroot --enable-hardcoded-tables --libdir=/usr/lib --shlibdir=/usr/lib --datadir=/usr/share/ffmpeg --disable-mipsdsp --disable-mipsdspr2 --cpu=cortex-a9 --pkg-config=pkg-config --enable-avcodec --enable-avdevice --enable-avfilter --enable-avformat --enable-avresample --enable-bzlib --enable-gpl --disable-libgsm --disable-indev=jack --disable-libvorbis --enable-lzma --disable-libmp3lame --enable-openssl --enable-postproc --disable-libschroedinger --enable-sdl2 --disable-libspeex --enable-swresample --enable-swscale --enable-libtheora --enable-vaapi --enable-vdpau --enable-libvpx --enable-libx264 --enable-outdev=xv
  
    libavutil      55. 58.100 / 55. 58.100
  
    libavcodec     57. 89.100 / 57. 89.100
  
    libavformat    57. 71.100 / 57. 71.100
  
    libavdevice    57.  6.100 / 57.  6.100
  
    libavfilter     6. 82.100 /  6. 82.100
  
    libavresample   3.  5.  0 /  3.  5.  0
  
    libswscale      4.  6.100 /  4.  6.100
  
    libswresample   2.  7.100 /  2.  7.100
  
    libpostproc    54.  5.100 / 54.  5.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':q=    0B f=0/0   
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.20.100
  
    Duration: 00:00:30.88, start: 0.000000, bitrate: 143 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 320x180, 67 kb/s, 21.08 fps, 21.08 tbr, 16192 tbn, 42.17 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 66 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler

  I’ve tried h264 and mp2 video with the same results. Has anyone seen this before

• Use ff mpeg inside a loop to create thumbnails

  30 avril 2014, par Paul Ledger

  I have an uploader which I am creating for a site. The uploader is a jquery plugin which I am on creating that allows single of multiple uploads of images or videos.

  The uploader works with no problems and ffmpeg does create thumbnails no problem. However I have a max file size of 1GB which I will implement to the total of uploads so that users cannot upload to much in one go. But for testing I haven’t yet so I can test the limits of the uploader capabilities before adding restrictions.

  I have 4 videos I am using to test 246mb each. The files upload and move to the folder set on the test server (localhost) but the thumbnails don’t create as the PHP script extends the maximum time limit. The easy option would be to change this in php.ini easily.

  The problem is thought the progress bar only tracks the upload not the ffmpeg conversion. Is there a way of tracking this in my progress bar or running this as a background task with multiple video files.

  It might be worth mentioning but with smaller videos, under 70mb each there is no problem at all thumbnails are created but still after the progress bar reaches 100%.

  If it helps heres the relevant sections of the code. I can add the full source on git if needed. But I do fear that the answer will be no or alter the php.ini file

  JQuery/ Ajax :

  $.ajax({
  
          url: options.processor,
  
          type: "POST",
  
          data: formdata,
  
          processData: false,
  
          contentType: false,
  
          dataType:"JSON",
  
          beforeSend: init,
  
          error: error,
  
          xhr: function() {
  
              var myXhr = $.ajaxSettings.xhr();
  
              if(myXhr.upload){
  
                  myXhr.upload.addEventListener('progress',uploadProgress, false);
  
              }
  
              return myXhr;
  
          },
  
          success: onComplete
  
      });
  
  
  
  var uploadProgress = function(e){
  
          if(e.lengthComputable){
  
              if(options.single === true){
  
                  $('#'+options.counter).html('File 1 of 1');
  
              }else{
  
                  $('#'+options.counter).html('Files '+ item_count +' of ' + item_count + ' uploading');  
  
              }
  
              var p = (e.loaded / e.total) * 100;
  
              $('#'+options.progress_text).html(Math.round(p) + '%');
  
              $('#'+options.progress_bar).width(p + '%');
  
          }
  
      }

  PHP :

  if(!empty($_FILES['file'])){
  
      if(!empty($_POST['single'])){
  
          //single file upload
  
          if($_FILES['file']['error'] === 0){
  
              $temp = $_FILES['file']['tmp_name'];
  
              $name = $_FILES['file']['name'];
  
              $ext = explode('.',$name);
  
              $ext = strtolower(end($ext));
  
              $file = md5($temp).time().'.'.$ext;
  
              if(in_array($ext,$allowed) === true &&  move_uploaded_file($temp,"../uploads/{$file}") === true){
  
                  $succedeed[] = array('name' => $name,'file' => $file,'type'=>'image');              
  
              }else{
  
                  $failed[] = array('name' => $name, 'file' => $file, 'error' => 'File type not allowed');
  
              }
  
          }
  
      }else{
  
          //multiple file upload
  
          foreach($_FILES['file']['name'] as $key => $name){
  
              if($_FILES['file']['error'][$key] === 0){
  
                  $temp = $_FILES['file']['tmp_name'][$key];
  
                  $ext = explode('.',$name);
  
                  $ext = strtolower(end($ext));
  
                  $_file = md5($temp).time();
  
                  $file = $_file.'.'.$ext;
  
                  if(in_array($ext,$allowed) === true &&  move_uploaded_file($temp,"../uploads/{$file}") === true){
  
                      $file_type = explode('/',$_FILES['file']['type'][$key]);
  
                      if($file_type[0] === 'image'){
  
                          echo 'image';
  
                          $succedeed[] = array('name' => $name,'file' => $file, 'type' => 'image');               
  
                      }else{
  
                          $ffmpeg = 'ffmpeg';
  
                          $output = dirname(__DIR__).'/uploads/thumbs/'.$_file.'.jpg';
  
                          $input = dirname(__DIR__).'/uploads/'.$file;
  
                          $mov = new ffmpeg_movie($input);
  
                          $d =  $mov->getDuration();
  
                          $iscopy = $mov->getCopyright();
  
                          $h = $mov->getFrameHeight();
  
                          $w = $mov->getFrameWidth();
  
                          $pos = ceil((int)$d /3);
  
                          $size = $w.'x'.$h;
  
                          $cmd = "ffmpeg -i $input -an -ss $pos -s $size $output";
  
                          shell_exec($cmd);
  
                          $succedeed[] = array('name' => $name,'file' => '/thumbs/'.$_file.'.jpg', 'type' => 'video');                
  
                      }
  
  
  
                  }else{
  
                      $failed[] = array('name' => $name, 'file' => $file, 'error' => 'File type not allowed');
  
                  }
  
              }
  
          }
  
      }
  
  }

  **UPDATE the process of converting the files to thumbnails takes less time if I drop the posotion of where the thumb is taken from ie :

  $cmd = "ffmpeg -i $input -an -ss $pos -s $size $output";

  would become

  $cmd = "ffmpeg -i $input -an -ss 3 -s $size $output";

  I presume this is because ffmpeg plays the video until it gets to that point in the video to take the thumbnail. There for if the video is 5mins and the the thumb is taken at 2.30 then each conversion would take 2 min 30. I think I answered my own question here but take the thumbnail form somewhere between 1 - 5 seconds. Or alternately add a second progress bar into the onComplete handler which would calculate the time this would take and display it to the user.