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• 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.

• Timelapse (1/6 fps) from slo-mo (240 fps) with ffmpeg

  4 avril 2022, par baskak

  I recorded slo-mo video on an iPhone SE (2) by mistake instead of timelapse.

  


  I know there's a lot of answers to this question here, but I'm trying again and again and always something's wrong (like a video that has a correct total no. of frames, but lasts 3 hours and is basically a freeze :D )
My recent command was

  


  


  ffmpeg -i IMG_2174.MOV -vf framestep=1440,setpts=N/120/TB -c:v libx264
-preset slow -crf 22 -an -r 30 IMG_2174.timelapse.MOV

  


  


  but it resulted in a one-second-long video, so way over-timelapsed. Should be several seconds IINM. The source video is 30 minutes long @240fps, 17GB.
Thx.

  


• "Moov Atom not Found " while converting .m4a into .mp3 audio file ?

  22 juillet 2021, par Comrade Shiva

  when i was converting iphone Audio recording .m4a file into .mp3 format at that time i got error "Moov Atom not found" showing on the screen,,,,
so i tried to check this error on internet ,found that some ffmpeg commands and recover_mp4's commands but same error showing on the screen ,,,,
it may be my Audio file was damaged so any solution to recover the audio file ,,,,,
recover_mp4.exe showing some commands and claiming to recover file but in my lappy its not workable When ffmpeg is used
when recover_mp4 is used