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• Incorrect codec parameters for webm conversion

  20 avril 2015, par peterbw321

  I am using a shared hosting server with ffmpeg installed. i have been told they cant upgrade the version I have. I am trying to convert video files to html5 formats. When I try to convert to webm, I get below error. Can anyone help with this problem ?

  exec("/usr/bin/ffmpeg -i eliza.mp4 -acodec copy -vcodec copy 2>&1 video.webm");
  
  
  
      array(29) { [0]=> string(67) "FFmpeg version 0.6.5, Copyright (c) 2000-2010 the FFmpeg developers" 
  
  [1]=> string(74) " built on Jan 29 2012 23:55:02 with gcc 4.1.2 20080704 (Red Hat 4.1.2-51)" [2]=> 
  
  string(649) " configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 
  
  --mandir=/usr/share/man --incdir=/usr/include --disable-avisynth --extra-cflags='-O2 -g -pipe 
  
  -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 
  
  -mtune=generic -fPIC' --enable-avfilter --enable-avfilter-lavf --enable-libdirac --enable-libfaac 
  
  --enable-libfaad --enable-libfaadbin --enable-libgsm --enable-libmp3lame --enable-libopencore-amrnb 
  
  --enable-libopencore-amrwb --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc 
  
  --enable-pthreads --enable-shared --enable-swscale --enable-vdpau --enable-version3 
  
  --enable-x11grab" [3]=> string(35) " libavutil 50.15. 1 / 50.15. 1" [4]=> string(35) " 
  
  libavcodec 52.72. 2 / 52.72. 2" [5]=> string(35) " libavformat 52.64. 2 / 52.64. 2" 
  
  [6]=> string(35) " libavdevice 52. 2. 0 / 52. 2. 0" [7]=> string(35) " libavfilter 1.19. 0 / 1.19. 0" [8]=> 
  
  string(35) " libswscale 0.11. 0 / 0.11. 0" [9]=> string(35) " libpostproc 51. 2. 0 / 51. 2. 0" [10]=> 
  
  string(52) "Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'eliza.mp4':" [11]=> string(11) " Metadata:" [12]=>
  
  string(26) " major_brand : mp42" [13]=> string(23) " minor_version : 0" [14]=> string(35) " compatible_brands: 
  
  mp42isomavc1" [15]=> string(48) " encoder : HandBrake 0.9.4 2009112300" [16]=> string(59) " Duration: 
  
  00:00:05.56, start: 0.000000, bitrate: 551 kb/s" [17]=> string(94) " Stream #0.0(und): Video: h264, 
  
  yuv420p, 560x320, 465 kb/s, 30 fps, 30 tbr, 90k tbn, 60 tbc" [18]=> string(62) " Stream #0.1(eng): 
  
  Audio: aac, 48000 Hz, mono, s16, 83 kb/s" [19]=> string(72) "[webm @ 0x7200a0]Only VP8 video and 
  
  Vorbis audio are supported for WebM." [20]=> string(33) "Output #0, webm, to 'video.webm':" 
  
  [21]=> string(11) " Metadata:" [22]=> string(33) " encoder : Lavf52.64.2" [23]=> string(89) " 
  
  Stream #0.0(und): Video: libx264, yuv420p, 560x320, q=2-31, 465 kb/s, 90k tbn, 30 tbc" [24]=> 
  
  string(61) " Stream #0.1(eng): Audio: libfaac, 48000 Hz, mono, 83 kb/s" [25]=> string(15) 
  
  "Stream mapping:" [26]=> string(21) " Stream #0.0 -> #0.0" [27]=> string(21) " Stream #0.1 -> 
  
  #0.1" [28]=> string(72) "Could not write header for output file #0 (incorrect codec parameters ?)" } 

• Node.js Webm live stream server : issues with tag

  10 décembre 2013, par breathe0

  I'm using Node.js as stream server to stream realtime Webm videos that is sent by FFMPEG (executed from another application, the stream is done via HTTP) and received by a webapp that uses the tag.

  This is what I'm doing : FFMPEG streams the received frames using the following command :

  ffmpeg -r 30 -f rawvideo  -pix_fmt bgra -s 640x480 
  
  -i \\.\pipe\STREAM_PIPE -r 60 
  
  -f segment  -s 240x160 -codec:v libvpx  -f webm 
  
  http://my.domain.com/video_stream.webm

  (the stream comes from an application that uses the Kinect as source and communicates with FFMPEG through a pipe, sending one frame after another)

  When the webapp connects, it receives immediately this response from the server :

  HTTP/1.1 200 OK
  
  X-Powered-By: Express
  
  content-type: video/webm
  
  cache-control: private
  
  connection: close
  
  Date: Fri, 06 Dec 2013 14:36:31 GMT

  and a Webm header (previously stored on the server, with the same resolution and frame rate of the source stream and tested as working on VLC) is immediately appended. Then the webapp starts to receive the data streamed by FFMPEG. Here is a screenshot of Mkvinfo GUI showing the fields of the header :

  

  However, even if the Network tab of the Chrome console shows that there is an actual stream of data (meaning that what is streamed is not completely garbage, otherwise the connection would be dropped), the player doesn't display anything. We tried to manually prepend our header to the dumped video received by the webapp and VLC plays it just fine, but this is not happening with the tag.

  What can cause this problem ? Are we missing something about the encoding on the FFMPEG side or we stored wrong values on the header (or they're not enough) ?

  PS : I cannot rely on an extern stream server.

  PPS : We tried the following experiments :

  • substituting the video header with the one stored in the server makes the video playable on both vlc and video tag
  • if we dump the video that is already started (without an header) and we prepend the video header stored in the server or even its original header, the video is playable in VLC but not on the tag (we're carefully prepending the header just before the beggining of the cluster).

• imageJpeg and FFMPEG in windows vs linux

  25 janvier 2020, par Tanmay Gawankar

  I have a working code for converting image to a 5 seconds video using FFMPEG.

  The problem is, The code only works for downloaded images, FFMPEG doesn’t convert image to video when image is generated programmatically ONLY IN LINUX.

  PHP code

  <?php
  
      $downloadedF="folder/d.jpg";
  
      $downloadedV="folder/d.mp4";
  
      $renderedF="folder/r.jpg";
  
      $renderedV="folder/r.mp4";
  
  
  
      $op_d=shell_exec("ffmpeg -r 1/5 -i ".$downloadedF." -c:v libx264 -vf fps=25 -pix_fmt yuv420p ".$downloadedV);
  
      $op_r=shell_exec("ffmpeg -r 1/5 -i ".$renderedF." -c:v libx264 -vf fps=25 -pix_fmt yuv420p ".$renderedV);
  
  
  
      echo "Errors:<br />".$op_d."<br /><br />".$op_r;
  
  ?>

  The d.mp4(or output for downloaded image) is getting generated for both Windows and Linux
  The r.mp4(or output for rendered image) gets generated only in Windows and 48 bytes empty file is getting created in Linux

  System :

  XAMPP on Windows 10(Development)
  Godaddy Starter plan hosting - Linux(Probably redhat)(Production)

  File Structure

  root folder
  
      |-index.php
  
      |-ffmpeg (will be ffmpeg.exe in Windows)
  
      |-folder
  
          |-d.jpg (random downloaded image from google)
  
          |-d.mp4 (Will be created - video converted from downloaded image)
  
          |-r.jpg (rendered image using php imagejpg)
  
          |-r.mp4 (Will be created - video converted from rendered image)

  Rendered Image Code :

  $imgFF = imagecreatetruecolor($videoWidth, $videoHeight);
  
  //---adding many text using imagettftext();
  
  imagejpeg($imgFF, $path."-000.jpg");  //for this example, I copied output to folder as r.jpg

  Edit 1 :

  The return value of shell_exec has no error/output even after adding

  error_reporting(E_ALL);
  
  ini_set('display_errors', 1);

  Edit 2 :

  The log for successful conversion can be found at Here
  The log for unsuccessful conversion of rendered image can be found at Here

  Note :

  • The scenario here is minimized and code is separated from long code.
  • In Linux command i add ./ for FFMPEG