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• swscale/utils : add SwsFormat abstraction and helpers

  9 octobre 2024, par Niklas Haas

  swscale/utils : add SwsFormat abstraction and helpers
  Groups together all relevant color metadata from an AVFrame. While we could
  
  use AVFrame directly, keeping it a separate struct has three advantages :
  1. Functions accepting an SwsFormat will definitely not care about the
  
     data pointers.
  
  2. It clearly separates sanitized and raw metadata, since the function to
  
     construct an SwsFormat from an AVFrame will also sanitize.
  
  3. It's slightly more lightweight to pass around.
  Move these into a new header file "utils.h" to avoid crowding
  
  swscale_internal.h even more, and also to solve a circular dependency issue
  
  down the line.
  Sponsored-by : Sovereign Tech Fund
  
  Signed-off-by : Niklas Haas <git@haasn.dev>
  

  • [DH] libswscale/utils.c
  • [DH] libswscale/utils.h

• avcodec/rkmpp : Fix broken build due to missing control operation

  6 janvier 2018, par LongChair

  avcodec/rkmpp : Fix broken build due to missing control operation
  This patch is taking care of https://trac.ffmpeg.org/ticket/6834.
  
  It seems that one of the control operations that was available to get
  
  the free decoders input slots was removed.
  There is another control operation to retrieve the used slots. Given
  
  that the input slot count is hardcoded to 4 in mpp at this point,
  
  replacing the old control operation by the other one.
  This was tested on Rockchip ROCK64.
  Signed-off-by : wm4 <nfxjfg@googlemail.com>
  

  • [DH] configure
  • [DH] libavcodec/rkmppdec.c

• php sequential exec() processes not working (ffmpeg encode)

  26 juillet 2012, par Allen Hall

  I am trying to run a php script from shell that will query a table of videos, check if the encoded version of that video exists, and if not, encode one. I have tested all of the contents of the exec() commands outside of php so I know they work fine. My problem is when the ffmpeg line runs, it finishes but the script quits. I want it to run the next exec() and I don't understand why it won't.

  Also to avoid confusion, I am not trying to run these simultaneously, and I don't care about running in the background since this is running from the shell anyway. I just want these 4 commands to execute sequentially and then continue to the next file.

  include 'inc/functions.php';
  
  
  
  $result = mysql_query("SELECT * FROM videos") or die(mysql_error());
  
  
  
  while ($row = mysql_fetch_array($result)) {
  
      if(!file_exists('/opt/lampp/htdocs/videos/'.$row['file_folder'].'/'.$row['file_name'].'.mp4')) {
  
          exec('ffmpeg -i "/opt/lampp/htdocs/videos/'.$row['file_folder'].'/'.$row['file_name'].'" -vcodec libx264 -vpre fast -b 512k -acodec libfaac -ab 128k -ac 2 "/opt/lampp/htdocs/videos/'.$row['file_folder'].'/output.mp4"') or die('could not encode movie');
  
          exec('/usr/lib/qt-faststart "/opt/lampp/htdocs/videos/'.$row['file_folder'].'/output.mp4" "/opt/lampp/htdocs/videos/'.$row['file_folder'].'/'.$row['file_name'].'.mp4"') or die('could not move mp4 atoms');
  
          exec('rm -f "/opt/lampp/htdocs/videos/'.$row['file_folder'].'/output.mp4"') or die('could not delete original encode');
  
          exec('ffmpeg -ss 00:00:30.00 -i "/opt/lampp/htdocs/videos/'.$row['file_folder'].'/'.$row['file_name'].'" -y -f image2 -vcodec mjpeg -vframes 1 "'.$row['file_name'].'.jpg"') or die('could not create screenshot');
  
      }
  
  }