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• Can not add string to the video using ffmpeg base on PHP

  13 septembre 2016, par Hạ Tím

  I’m new in ffmpeg and I’m trying to make a demo using ffmpeg.
  Below is the PHP script

  $cmd = '"C:\Program Files\ffmpeg\bin\ffmpeg.exe" -i C:\wamp\www\vine-project\cron/tmp/t_42953497622724.mp4 --enable-libfreetype -vf "drawtext=fontfile=C:\wamp\www\demo-ffmpeg\cron/arial.ttf:text='Stack Overflow':fontcolor='Black':fontsize=19" -codec:v libx264 -codec:a copy C:\wamp\www\demo-ffmpeg\cron/tmp/text_42953497622724.mp4';
  
  @exec($cmd, $output);
  
  echo '<pre>';
  
  print_r($output);
  
  echo '</pre>';

  And then below is the result of output :

  Array
  
  (
  
  )

  Before, I joined multi videos and add background successfully.
  Input video file is exists.
  What is my wrong ? Are something incorrect ?
  3 cups of beer for each help :D
  Sorry for my bad English
  

  Thanks for attention !

• How to add backslashes to timecode string in python 2.7 in windows and osx

  7 novembre 2015, par Tandy Freeman

  To create a burnt in timecode in ffmpeg, two escaping backslashes are required on the command line as so :

  00\\:00\\:00\\:00

  Using ffprobe to find the starting timecode produces the following output with a subprocess_output

  00:00:00:00\n

  I am using rstrip() to remove the new line, but how can I create a new variable that I can pass to ffmpeg’s filter chain that will add those escaping backslashes ?

  I ultimately need my commandline to expand to something like this :

  -vf 'drawtext=fontfile=/Library/Fonts/Tuffy.ttf:fontcolor=white:timecode=00\\:00\\:00\\:00:rate=25:boxcolor=0x000000AA:box=1:fontsize=40:x=360-text_w/2:y=405'

  though of course in my script, it will just contain

  timecode=%s

• avformat/http: check the auth string contents not the pointer which cannot be NULL

  14 octobre 2013, par Michael Niedermayer

  avformat/http: check the auth string contents not the pointer which cannot be NULL
  It appears this bug originates from a "work in progress" patch from
  
  ffmpeg-devel that was heavily redesigned by and integrated in libav
  And that patch even had a reply and review on the mailing list pointing
  
  out that it had a bug.
  This fixes a deadlock with ffserver
  See : [FFmpeg-devel] [PATCH] Fix HTTP authentication problem for POST actions.
  
       [FFmpeg-devel] [PATCH 1/3] Introduce auth_phase flag, which will be true if authorization needs to be sent, but the type of authorization is not known yet Partial fix #3036
  
       [FFmpeg-devel] [PATCH 2/3] Only add Transfer-Encoding header when not in authorization phase, because server will wait (indefinitely) for data when receiving this header Partial fix #3036
  
       [FFmpeg-devel] [PATCH 3/3] Only allow posting data and/or forcing a 200 code, enabling posting isml chunks, -after- we did a possible first request to get a 403 from the server telling us which type of authentication to apply Final part fix #3036
  
  See : 71549a857b13edf4c4f95037de6ed5bb4c4bd4af
  
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavformat/http.c