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• ffmpeg streaming on embedded device [closed]

  18 février 2012, par JoeFrizz

  I have a problem with the ffmpeg streaming application.

  When I try to dump a RTSP (mp4) stream to a file on my
  desktop (Ubuntu) everything works fine...

  What I actually want to do is to download the same stream
  with an embedded system (very limited CPU power)...

  While I get about 150 fps on the desktop my embedded system loads
  about 2 fps only and struggles after downloading
  of approx. 150 frames. All the other frames (about 1000 total)
  are dublicated or missing...

  Can this problem be fully explained by the weak CPU power
  of the embedded system ? Does the RTSP protocol allow streaming
  far below the normal rates (my desktop achieves) ?

  Are there any tricks to overcome that issue ?

• Dissappearing characters in youtube-dl, ffmpeg, and windows

  4 juin 2014, par user3407161

  so what happens is that if the video title has a symbol that isn’t supported by your current locale then ffmpeg won’t be able to get to that file properly.

  Here’s one example

  ►2 HOURS BEST MELODIC DUBSTEP MIX APRIL 2013◄ ヽ( ≧ω≦)ﾉ

  as you may or may not be able to see, lots of symbols from unicode.

  The problem is that in cmd and ffmpeg, though cmd can see

  ►2 HOURS BEST MELODIC DUBSTEP MIX APRIL 2013◄ ヽ( ≧ω≦)ﾉ

  ffmpeg only sees

  2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013 ヽ(≧ω≦)ﾉ

  This is the exact error message (i’m using youtube-dl)

  [ffmpeg] Adding metadata to 'C:\Music\ToBeDone\2014-06-01\►2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013◄ ヽ( ≧ω≦)ﾉ.mp4'
  
  ERROR: C:\Music\ToBeDone\2014-06-01\2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013 ヽ(≧ω≦)ﾉ.mp4: No such file or directory
  
  ERROR: WARNING: unable to obtain file audio codec with ffprobe

  After some research i’ve determined that by changing the system locale you can change which symbols cmd can support.

  However

  ヽ

  Used to appear as a box in a question mark in United states locale. In japanese locale it appears as it does on your screen right now.

  the problem with

  ◄

  is that even though it’s not appearing as a question mark in a box (it’s appearing as how it should be), ffmpeg (or cmd) can’t detect it properly.

  (Refer back to the error message, i’ll repost it below.)

  [ffmpeg] Adding metadata to 'C:\Music\ToBeDone\2014-06-01\►2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013◄ ヽ( ≧ω≦)ﾉ.mp4'
  
  ERROR: C:\Music\ToBeDone\2014-06-01\2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013 ヽ(≧ω≦)ﾉ.mp4: No such file or directory
  
  ERROR: WARNING: unable to obtain file audio codec with ffprobe

  So as you can see, I think cmd passed on the symbol correctly to ffmpeg seeing from the adding metadata line, but when it actually does the operation ffmpeg loses

  ► and ◄

  Could this be a bug with ffmpeg ? MY workaround so far with incompatible symbols was to change the system locale, but I don’t think i can do that with these two symbols...

  These are the unique characters that i need to have a locale that supports

  Ö
  
  
  
  ◄ ヽ( ≧ω≦)ﾉ
  
  
  
  ( ͡° ͜ʖ ͡°)
  
  
  
  (_≧∇≦)
  
  
  
  †
  
  
  
  【

  More info on the problem in general

  https://github.com/rg3/youtube-dl/issues/2999

  and this is what’s going on (Batch Script)

  @echo off
  
  setlocal
  
  cd C:\youtube-dl
  
  
  
  set /p "var1=Enter URL: " %=% pause
  
  if defined var1 set "var1=%var1:"=%"
  
  set "var2=%date:/=-%" 
  
  set "var3=%%(title)s.%%(ext)s"
  
  youtube-dl "%var1%" -ci -o "C:\Music\ToBeDone\%var2%\%var3%" -f best -x --no-mtime --add-metadata 
  
  youtube-dl "%var1%" --skip-download -ci -o "C:\Music\ToBeDone\%var2%\Thumbnail\%var3%" --write-   thumbnail
  
  youtube-dl "%var1%" --skip-download -ci -o "C:\Music\ToBeDone\%var2%\Description\%var3%" --write-description

• How to install FFMpeg in WampServer 2.0 (Windows XP) [closed]

  16 décembre 2012, par Richard Knop

  I need to install the ffmpeg PHP extension on my localhost so I can test few of my scripts but I am having troubles figuring out how to do that.

  I have WampServer 2.0 with PHP 5.2.9-2, my OS is Windows XP. Please somebody give me step by step instructions.

  I have found some Windows builds here : http://sourceforge.net/projects/ffmpeg-php/files/

  But I don't know which one to download and what to do with files.

  EDITED :

  What I have done so far :

  1. Download ffmpeg_new
  2. Copy php_ffmpeg.dll from the php5 folder to the C :\wamp\bin\php\php5.2.9-2\ext
  3. Copy files from common to the windows/system32 folder
  4. Add extension=php_ffmpeg.dll to php.ini file
  5. Restarted all services (Apache, PHP...)

  I am gettings an error after using this code :

              $extension = 'ffmpeg';
  
              $extension_soname = 'php_ffmpeg.dll';
  
              $extension_fullname = PHP_EXTENSION_DIR . "/" . $extension_soname;
  
  
  
              // load extension
  
              if(false === extension_loaded($extension)) {
  
                  if (false === dl($extension_soname))
  
                      throw new Exception("Can't load extension $extension_fullname\n");
  
              }

  The error :

  Warning: dl() [function.dl]: Not supported in multithreaded Web servers - use extension=ffmpeg.dll in your php.ini in C:\wamp\www\hunnyhive\application\modules\default\controllers\MyAccountController.php on line 314

  Plus I also get the exception from above.