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• Installation of FFMPEG for Python in WIndows

  15 janvier 2017, par user3587175

  I’m trying to use this python video converter and I couldn’t even run the test. I read in the manual that I had to install FFMPEG separately so I did (I created the folder in C :\, the enviroment variable "path" and tested it and worked) but still doesn’t work.

  When I run the command :

  python setup.py test

  I get this :

  Traceback (most recent call last):
  
    File "setup.py", line 51, in <module>
  
      packages=['converter'],
  
    File "C:\Python27\lib\distutils\core.py", line 151, in setup
  
      dist.run_commands()
  
    File "C:\Python27\lib\distutils\dist.py", line 953, in run_commands
  
      self.run_command(cmd)
  
    File "C:\Python27\lib\distutils\dist.py", line 972, in run_command
  
      cmd_obj.run()
  
    File "setup.py", line 20, in run
  
      raise Exception('tests failed')
  
  Exception: tests failed
  
  </module>

  When I run this example code :

  from converter import Converter
  
  c = Converter()
  
  
  
  info = c.probe('test1.ogg')
  
  
  
  conv = c.convert('test1.ogg', '/tmp/output.mkv', {
  
      'format': 'mkv',
  
      'audio': {
  
          'codec': 'mp3',
  
          'samplerate': 11025,
  
          'channels': 2
  
      },
  
      'video': {
  
          'codec': 'h264',
  
          'width': 720,
  
          'height': 400,
  
          'fps': 15
  
      }})
  
  
  
  for timecode in conv:
  
      print "Converting (%f) ...\r" % timecode

  I get this :

  Traceback (most recent call last):
  
    File "C:\Users\USER\worspace_pyth\cosa\prueba1.py", line 3, in <module>
  
      c=Converter()
  
    File "C:\Python27\converter\__init__.py", line 27, in __init__
  
      ffprobe_path=ffprobe_path)
  
    File "C:\Python27\converter\ffmpeg.py", line 345, in __init__
  
      raise FFMpegError("ffmpeg binary not found: " + self.ffmpeg_path)
  
  converter.ffmpeg.FFMpegError: ffmpeg binary not found: ffmpeg
  
  </module>

  I can’t understand what else I need to do for this to work. Thanks for your help.

• java.lang.UnsatifiedLinkError : no jniavutil in java.library.path using JavaCV FFmpegFrameGrabber

  31 mars 2015, par Noah Lutz

  I’m writing a program that is using JavaCV to grab frames from a stream. Its trying to use FFmpegFrameGrabber to capture the frames but when I try to run it, I get an UnsatisfiedLinkError.

  Here is the code :

  FrameGrabber frameGrabber;
  
      try{
  
          frameGrabber = new FFmpegFrameGrabber("http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8");
  
          frameGrabber.start();
  
  
  
          while(true){
  
              video.addFrame(new Frame(frameGrabber.grab()));
  
              System.out.println(video.getLength());
  
          }
  
      }catch(Exception e){
  
          e.printStackTrace();
  
      }

  And here is the stack trace :

  Exception in thread "Thread-0" java.lang.UnsatisfiedLinkError: no jniavutil in java.library.path
  
      at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1857)
  
      at java.lang.Runtime.loadLibrary0(Runtime.java:870)
  
      at java.lang.System.loadLibrary(System.java:1119)
  
      at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:535)
  
      at org.bytedeco.javacpp.Loader.load(Loader.java:410)
  
      at org.bytedeco.javacpp.Loader.load(Loader.java:353)
  
      at org.bytedeco.javacpp.avutil.<clinit>(avutil.java:10)
  
      at java.lang.Class.forName0(Native Method)
  
      at java.lang.Class.forName(Class.java:344)
  
      at org.bytedeco.javacpp.Loader.load(Loader.java:385)
  
      at org.bytedeco.javacpp.Loader.load(Loader.java:353)
  
      at org.bytedeco.javacpp.avcodec.<clinit>(avcodec.java:12)
  
      at org.bytedeco.javacv.FFmpegFrameGrabber.<clinit>(FFmpegFrameGrabber.java:103)
  
      at com.noahlutz.gopro.GoProDVR.run(GoProDVR.java:23)
  
      at java.lang.Thread.run(Thread.java:745)
  
  Caused by: java.lang.UnsatisfiedLinkError: /private/var/folders/4q/tw0nqgpn4cv2q7yr052_szh00000gn/T/javacpp104085411945039/libjniavutil.dylib: dlopen(/private/var/folders/4q/tw0nqgpn4cv2q7yr052_szh00000gn/T/javacpp104085411945039/libjniavutil.dylib, 1): Library not loaded: @rpath/libavutil.52.dylib
  
    Referenced from: /private/var/folders/4q/tw0nqgpn4cv2q7yr052_szh00000gn/T/javacpp104085411945039/libjniavutil.dylib
  
    Reason: no suitable image found.  Did find:
  
      /private/var/folders/4q/tw0nqgpn4cv2q7yr052_szh00000gn/T/javacpp104085411945039/./libavutil.52.dylib: malformed mach-o image: load command #16 length (0) too small in /private/var/folders/4q/tw0nqgpn4cv2q7yr052_szh00000gn/T/javacpp104085411945039/./libavutil.52.dylib
  
      at java.lang.ClassLoader$NativeLibrary.load(Native Method)
  
      at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1929)
  
      at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1814)
  
      at java.lang.Runtime.load0(Runtime.java:809)
  
      at java.lang.System.load(System.java:1083)
  
      at org.bytedeco.javacpp.Loader.loadLibrary(Loader.java:524)
  
      ... 11 more
  
  
  
  Process finished with exit code 0
  
  </clinit></clinit></clinit>

  I have both OpenCV and FFmpeg installed and I followed the instructions for the manual installation of JavaCV on their github page.

  Thanks for your help.

• PHP exec() and backslash \

  17 mars 2015, par Tio

  I’m trying to run the following command on exec :

  ffmpeg -y -i video.mp4 \
  
   -ss 1067 -i video.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts -t 32 tmp/cuts/6.ts \
  
   -ss 1215 -i video.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts -t 32 tmp/cuts/7.ts

  If i copy this command and run it on a shell everything works great, the video is cutted, perfect.

  However running trough php exec, ffmpeg returns the following error :

  [NULL @ 052a0060] Unable to find a suitable output format for '\'
  
  \: Invalid argument

  Even if i copy paste the command like this :

  <?php
  
      $command = 'ffmpeg -y -i video.mp4 \
  
           -ss 1067 -i video.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts -t 32 tmp/cuts/6.ts \
  
           -ss 1215 -i video.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts -t 32 tmp/cuts/7.ts';
  
  
  
      echo $command.chr(10);
  
  
  
      $return = 0;
  
      $output = array();
  
      exec($command, $output, $return);
  
  
  
   ?>

  Am I missing something ? I’ve tried escapeshellcmd, escapeshellarg, even double backslashes to escape the backslash, and nothing.

  This happens both in windows and Unix, errors are exactly the same.

  Any idea on what’s going on with this ?