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• avcodec/utils : Force mutex to NULL after destruction.

  1er octobre 2014, par Manfred Georg

  avcodec/utils : Force mutex to NULL after destruction.
  A badly behaving user provided mutex manager (such as that in OpenCV) may not reset the mutex to NULL on destruction.  This can cause a problem for a later mutex manager (which may assert that the mutex is NULL before creating).
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/utils.c

• how to ignore or fix false 'unmet dependencies' error ?

  31 août 2014, par yy502

  OS: LMDE 201403

  I previously installed OpenShot (a video editing software), which depends on libmlt6, and libmlt6 depends on ffmpeg. The chain of dependencies auto-installed just fine.

  Today I compiled and installed the latest ffmpeg v2.3.3 and apt-get starts to complain :

  You might want to run 'apt-get -f install' to correct these:
  
  The following packages have unmet dependencies:
  
   libmlt6 : Depends: ffmpeg (>= 5:0.6.2~) but 2.3.3-1 is to be installed
  
  E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

  Well, I’m sure my compiled version of ffmpeg is newer than whatever version libmlt6 requires, but the package manager does not seem to understand the new version number. How can I ignore or fix false ’unmet dependencies’ error, please ?

  Thanks for your time !

  Edit :

  Executing apt-get -f install would install the ffmpeg from repository to /usr/bin/ and uninstall/overwrite my compiled version of ffmpeg in /usr/local/bin/... not really the solution I’m after...

  Edit2 :

  the auto fix of apt-get will remove my compiled version of ffmpeg as prompted below :

  sudo apt-get install -f
  
  Reading package lists... Done
  
  Building dependency tree       
  
  Reading state information... Done
  
  Correcting dependencies... Done
  
  The following extra packages will be installed:
  
    ffmpeg
  
  Suggested packages:
  
    nvidia-libvdpau1
  
  The following packages will be upgraded:
  
    ffmpeg
  
  1 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
  
  Need to get 0 B/1,307 kB of archives.
  
  After this operation, 242 MB disk space will be freed.
  
  Do you want to continue? [Y/n] n
  
  Abort.

• ffmpeg won't start until java exits

  9 août 2014, par user3925332

  I am trying to make a java program that automatically converts wtv files in an input folder to mpg files in output folder. The twist is that I make it run periodically, so it acts as a synchronizer.

  The following code works for converting the .wtv to a .dvr-ms, which is required by ffmpeg since it cannot convert .wtv files directly.

      Process p = Runtime.getRuntime().exec("C:\\Windows\\ehome\\WTVConverter C:\\Users\\Andrew\\Desktop\\test\\input\\input.wtv C:\\Users\\Andrew\\Desktop\\test\\output\\input.dvr-ms");
  
      p.waitFor();

  WTVConverter has no problems running from a java application. ffmpeg is a different story. Once the above line runs, I then run this...

      Process p = Runtime.getRuntime().exec("ffmpeg\\bin\\ffmpeg -y -i \"C:\\Users\\Andrew\\Desktop\\test\\output\\input.dvr-ms'" -vcodec copy -acodec copy -f dvd \"C:\Users\Andrew\Desktop\test\output\input.mpg\"");
  
      p.waitFor();

  Suddenly, there is a problem... The application ffmpeg shows up in the task manager, but it’s cpu usage is 0, and no mpeg files is being generated. If I force the java application to close, though, suddenly it starts working ! Huh ?

  What reason would there be for a command line application to wait for its calling application to quit before it executes ? I’m not incredibly command line savvy, so I don’t really know how to diagnose this problem.