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• Checking Video Quality using WP Code, Forminator and FFmpeg is not working [closed]

  3 septembre 2024, par guiliannkamga Guilian90

  I have a WordPress website where users should be able to upload videos. The quality of the videos should be checked upon upload, meaning the videos must have a 16:9 aspect ratio and be in HD. If a video does not meet these conditions, the upload should not be allowed, and the user should be informed of the reason.

  


  I am using the WordPress plugin Forminator for the video upload form and WP Code with a code snippet that contains PHP code. FFmpeg version 4.4.2 is installed on my server.

  


  ffmpeg version

  


  Form to upload a Video

  


  My provider is DreamHost, and I can connect to the server via Terminal on my MacBook and run ffmpeg commands without any issues.

  


  I added the form to a page and when I upload invalid videos, unfortunately, I do not receive any error messages, which should be happening according to my code, and I do not know why.

  


  Uploading the Video

  


  Success Message after uploading the Video

  


  Can someone help me ?

  


  add_filter('forminator_custom_form_submit_before_set_fields', 'forminator_video_validation', 10, 3);

function forminator_video_validation($entry, $form_id, $field_data) {
    foreach ($field_data as $field) {
        if ($field['name'] === 'upload-1') { // 'upload-1' is the ID of the Datei-Upload-Field in Forminator
            $file = $field['value']['file']['file_path'];

            // check if the file exists
            if (!file_exists($file)) {
                wp_die('File does not exist');
            }

            // ffmpeg command to check video size and resolution
            $command = "ffmpeg -i " . escapeshellarg($file) . " 2>&1";
            $output = shell_exec($command);

            // extract resoltion from the ffmpeg output
            if (preg_match('/Stream #0:0.*Video:.* (\d+)x(\d+)/', $output, $matches)) {
                $width = (int) $matches[1];
                $height = (int) $matches[2];
                $aspect_ratio = $width / $height;
                $allowed_aspect_ratio = 16 / 9;
                $min_width = 1280;
                $min_height = 720;

                // check if the video fullfills the criterias
                if ($width < $min_width || $height < $min_height || round($aspect_ratio, 2) != round($allowed_aspect_ratio, 2)) {
                    wp_die('The video must be at least in HD (1280x720) and must have the format 16:9. (Found: ' . $width . 'x' . $height . ')');
                }
            } else {
                // If the video could not be analysed
                wp_die('The Video could not be analysed');
            }
        }
    }
}


  


  PHP Code Snippet in WPCode

  


  WPCode Settings

  


• how to call a c function in the C++ function with the same name ?

  25 juillet 2013, par wolfz

  how to call a c function in the C++ function with the same name ?
  calling 'extern "c"' to use c header and ": :"operation to use the c function,
  but the link error occur.

  my code :

  extern "C" {
  
  #include <libavcodec></libavcodec>avcodec.h>
  
  }
  
  ...
  
  class DllAvCodec 
  
  {
  
    public:
  
    ...
  
    virtual void av_free_packet(AVPacket *pkt) { ::av_free_packet(pkt); }
  
    ...
  
  }

  the error :

  D:/player/jni/lib/DllAvCodec.h:143: error: undefined reference to 'av_free_packet(AVPacket*)'

  why the code "::av_free_packet(pkt)" invoke undefined ?

  my Android.mk is :

  LOCAL_PATH := $(call my-dir)
  
  DEFINES += \
  
             -DTARGET_POSIX \
  
             -DTARGET_LINUX \
  
             -D_LINUX \
  
             -DTARGET_ANDROID \
  
             -D__STDC_CONSTANT_MACROS 
  
  
  
  ######################################
  
  #build ffmpeg prebuilt lib
  
  ######################################
  
  include $(CLEAR_VARS)  
  
  LOCAL_MODULE := libavcodec
  
  LOCAL_SRC_FILES := lib/lib/libavcodec.a 
  
  LOCAL_EXPORT_C_INCLUDES +=$(LOCAL_PATH)/lib/include
  
  include $(PREBUILT_STATIC_LIBRARY)
  
  
  
  include $(CLEAR_VARS)  
  
  LOCAL_MODULE := libavfilter  
  
  LOCAL_SRC_FILES := lib/lib/libavfilter.a
  
  LOCAL_EXPORT_C_INCLUDES +=$(LOCAL_PATH)/lib/include
  
  include $(PREBUILT_STATIC_LIBRARY)
  
  
  
  include $(CLEAR_VARS)  
  
  LOCAL_MODULE := libavformat  
  
  LOCAL_SRC_FILES := lib/lib/libavformat.a  
  
  LOCAL_EXPORT_C_INCLUDES +=$(LOCAL_PATH)/lib/include
  
  include $(PREBUILT_STATIC_LIBRARY)
  
  
  
  include $(CLEAR_VARS)  
  
  LOCAL_MODULE := libavutil  
  
  LOCAL_SRC_FILES := lib/lib/libavutil.a  
  
  LOCAL_EXPORT_C_INCLUDES +=$(LOCAL_PATH)/lib/include
  
  include $(PREBUILT_STATIC_LIBRARY)
  
  
  
  include $(CLEAR_VARS)  
  
  LOCAL_MODULE := libpostproc  
  
  LOCAL_SRC_FILES := lib/lib/libpostproc.a   
  
  LOCAL_EXPORT_C_INCLUDES +=$(LOCAL_PATH)/lib/include
  
  include $(PREBUILT_STATIC_LIBRARY)
  
  
  
  include $(CLEAR_VARS)  
  
  LOCAL_MODULE := libswresample  
  
  LOCAL_SRC_FILES := lib/lib/libswresample.a   
  
  LOCAL_EXPORT_C_INCLUDES +=$(LOCAL_PATH)/lib/include
  
  include $(PREBUILT_STATIC_LIBRARY)
  
  
  
  include $(CLEAR_VARS)  
  
  LOCAL_MODULE := libswscale  
  
  LOCAL_SRC_FILES := lib/lib/libswscale.a
  
  LOCAL_EXPORT_C_INCLUDES +=$(LOCAL_PATH)/lib/include
  
  include $(PREBUILT_STATIC_LIBRARY)
  
  
  
  
  
  ######################################
  
  #build lib
  
  ######################################
  
  include $(CLEAR_VARS)
  
  LOCAL_MODULE:= player
  
  base := $(LOCAL_PATH)
  
  
  
  LOCAL_SRC_FILES += ......
  
  
  
  LOCAL_CPPFLAGS += -Wall -fexceptions $(DEFINES)  
  
  LOCAL_LDLIBS += -llog -lz
  
  LOCAL_LDFLAGS += -L../jni/lib/lib  -lavcodec -lavformat  -lavutil -lavfilter -lpostproc  -lswscale -lswresample
  
  
  
  LOCAL_STATIC_LIBRARIES := libavcodec \
  
                            libavformat \
  
                            libavutil \
  
                            libavfilter \
  
                            libpostproc \
  
                            libswscale \
  
                            libswresample 
  
  
  
  include $(BUILD_SHARED_LIBRARY)

• Using an array of strings as a function parameter in a function that builds another array

  22 octobre 2019, par NCrusher

  I start with an empty array :

  var ffmpegFilters = [String]()

  I have a button that should start an ffmpeg process when I click it :

  @IBAction func startConversionClicked(_ sender: Any) {
  
      //buildFfmpegString()
  
      ffmpegConvert(inputPath: inputFilePath, filters: ffmpegFilters, outputPath: "outputFilePath")
  
  }

  The function with the process looks like this :

  func ffmpegConvert(inputPath: String, filters: String, outputPath: String) {
  
      guard let launchPath = Bundle.main.path(forResource: "ffmpeg", ofType: "") else { return }
  
      do {
  
          let convertTask: Process = Process()
  
          convertTask.launchPath = launchPath
  
          convertTask.arguments = [
  
              "-i", inputPath,
  
              filters,
  
              outputPath
  
          ]
  
          convertTask.standardInput = FileHandle.nullDevice
  
          convertTask.launch()
  
          convertTask.waitUntilExit()
  
      }
  
  }

  the ffmpegFilters variable array is defined in another function :

  func conversionSelection() {
  
      if inputFileUrl != nil {
  
          let conversionChoice = conversionOptionsPopup.indexOfSelectedItem
  
          switch conversionChoice {
  
              case 1 :
  
                  outputExtension = ".mp3"
  
                  ffmpegFilters = ["-c:a libmp3lame", "-ac 1", "-ar 22050", "-q:a 9"]
  
              case 2 :
  
                  outputExtension = ".mp3"
  
                  ffmpegFilters = ["-c:a libmp3lame", "-ac 2", "-ar 44100", "-q:a 5"]
  
              case 3 :
  
                  outputExtension = ".mp3"
  
                  ffmpegFilters = ["-c:a libmp3lame", "-ac 1", "-ar 22050", "-b:a 32k"]
  
              case 4:
  
                  outputExtension = ".flac"
  
                  ffmpegFilters = ["-c:a flac"]
  
              default :
  
                  outputExtension = ".m4b"
  
                  ffmpegFilters = ["-c copy"]
  
          }
  
      }
  
  }

  So my array of strings is being used as an item in another array of strings.
  When I do this, my @IBAction at the top there gives me an error :

  Cannot convert value of type ’[String]’ to expected argument type
  ’String’

  And I’m not sure how to fix that. It’s really important I get the formatting of these ffmpeg arguments correct, because right now my project is stuck due to ffmpeg not liking the arguments Swift is passing to it in this process, so I’m trying to make everything relating to the arguments as bullet-proof as I can.