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• AJAX won't execute all of the php code

  27 septembre 2016, par hermanboy07

  I want a progressbar to be shown while a video-file is being uploaded. I’m using JS and AJAX to track progress of the file-upload php, and send the file. The php file contains a ffmpeg command that grabs some frames from the video. Essentially the php file creates a random folder, and puts both the video and the frames in it. when the php is called by if(isset($_FILES['file'])) it works just fine. But when i try to use AJAX it only uploads the video, but ignores the ffmpeg command and mysql_query.

  Javascript :

  function uploadFile(){
  
          var file = _("file1").files[0];
  
          var formdata = new FormData();
  
          formdata.append("file1", file);
  
          var ajax = new XMLHttpRequest();
  
          ajax.upload.addEventListener("progress", progressHandler, false);
  
          ajax.open("POST", "upload.php");
  
          ajax.send(formdata);

  Upload.php

          $name = $_FILES['file1']['name'];
  
          $type = explode(".",$name);
  
          $type = end($type);
  
          $tmp = $_FILES['file1']['tmp_name'];
  
          $uploadOk = 1;
  
          $exp = explode(".",$name);
  
          $filename = rand().$exp[0];
  
          $path = "videos/" . $filename . "/" . $name;
  
          $ffmpeg = "/usr/local/bin/ffmpeg";
  
          $size = "320x180";
  
  
  
          if($type != 'mp4' && $type != 'MP4'){
  
  
  
            $message = "Only mp4 format is supported!";
  
            $uploadOk = 0; 
  
  
  
          }else{
  
  
  
            mkdir("videos/".$filename);
  
  
  
            // ffmpeg function 
  
            for($num = 1; $num <= 15; $num++){
  
            $interval = $num * 3;
  
            shell_exec("$ffmpeg -i $tmp -an -ss $interval -s $size /videos/$filename/thumb$num.png");}
  
  
  
            move_uploaded_file($tmp, $path);
  
            mysql_query("INSERT INTO table (name, url) VALUES('$name', '$path')");

  Why dosen’t AJAX execute the complete php ?

• avcodec/mpeg4videoenc : Remove no-output code

  18 mai, par Andreas Rheinhardt

  avcodec/mpeg4videoenc : Remove no-output code
  While it offers modest speedups compared to the ordinary code,
  
  removing it completely offers even bigger speedups ; and given
  
  that these speedups also exist in the ordinary mode, they are
  
  even more important. The no-output code has a 7.8% performance
  
  improvement (based on benchmarking mpeg4_encode_mb()), yet
  
  removing the no-output code resulted in a 9.4% improvement.
  Furthermore, the no-output code was broken for the majority of
  
  its existence (until 9207dc3b0db368bb9cf5eb295cbc1129c2975e31)
  
  and no one complained, so it is likely not used at all.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/mpeg4videoenc.c

• Is there an easy way to use x264 presets with ffmpeg in code ?

  29 août 2014, par Nioreh

  I’m trying to encode video with ffmpeg and x264. I know ffmpeg can use x264 presets when using the program ffmpeg from command line. But is it possible to easily use these presets when encoding with ffmpeg in code ?

  If not, what is the best way to set the x264 parameters from ffmpeg code ? Is it just using the properties of the AVCodecContext ? Are all the x264 options available through this ?

  Thank you !