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• Mp4 Video File not playing after downloading using Content Disposition php but it plays when it streams directly from the server

  1er juin 2021, par Razor Rassh

  I'm trying to combine a video and audio file using the FFMPEG and it worked successfully for me. The FFMPEG successfully created the MP4 file in the target destination folder. When I'm trying to download the Video file from the destination folder using Content-Disposition in Php. The server successfully downloads the Video file from the exact target folder.

  


  The problem is that when I'm trying to play the video using VLC or any other player, nothing happened. The VLC player just launched and do nothing. I checked the downloaded file size with the video file located on the server and found that they both are the same size.

  


  The code I used for creating Video file and content disposition is,

  


        
      $downloadFolderPath = "/var/www/html/temp/{$downloadFolderName}";
      $result = mkdir($downloadFolderPath, 0777);     
      $downloadFileName = "$downloadFolderPath/$filename";
      //echo $downloadFileName;
      $command = $ffmpeglocation." -i $audio_link -i $link -c:v copy -c:a aac -preset fast -crf 20 $downloadFileName 2>&1";
      shell_exec($command);

      $file=fopen($downloadFileName,'r');
      header("Content-Type:video/mp4");
    
      header("Content-Disposition: attachment; filename=$filename");
         
      header('Content-Description: File Transfer');
      header('Content-Type: application/octet-stream');
       
      header('Content-Disposition: attachment; filename="'.basename($downloadFileName).'"');
      header('Expires: 0');
      header('Cache-Control: must-revalidate');
      header('Pragma: public'); 
      header('Content-Length: ' . filesize($downloadFileName)); 
      flush(); // Flush system output buffer
      readfile($downloadFileName);    
      die();


  


  The above code did its purpose by properly downloading the video file hosted on the server. But after downloading, the video file is not playing. I tried to access the file directly through the URL of the file in the browser and it plays fluently in the browser.

  


  Help me out. Sorry for the bad english.

  


• ffmpeg : return no chosen output if an uninitialized stream is unavailable

  6 mai 2021, par Jan Ekström

  ffmpeg : return no chosen output if an uninitialized stream is unavailable
  Otherwise the rate emulation logic in `transcode_step` never gets
  
  hit, and the unavailability flag never gets reset, leading to an
  
  eternal loop with some rate emulation use cases.
  This change was missed during the rework of ffmpeg.c, in which
  
  encoder initialization was moved further down the time line in
  
  commit 67be1ce0c6de330b1c10d1d121819d8a74a7b1f5 . Previously,
  
  as the encoder initialization had happened earlier, this state was
  
  not possible (flow getting as far as hitting the rate emulation logic,
  
  yet not having the encoder initialized yet).
  Fixes #9160
  

  • [DH] fftools/ffmpeg.c

• avcodec/avcodec : Free frame_thread_encoder on avcodec_open2() error

  18 avril 2021, par Andreas Rheinhardt

  avcodec/avcodec : Free frame_thread_encoder on avcodec_open2() error
  The frame_thread_encoder has so far not been freed in case an error
  
  happened in avcodec_open2() after ff_frame_thread_encoder_init().
  
  This commit changes this.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/avcodec.c