Recherche avancée

Sur d’autres sites (6775)

• Ffmpeg does not properly convert videos when run as daemon

  20 janvier 2019, par DGoiko

  I’m using ffmpeg to convert and split videos from a Python process. When I run it from console as a normal user everything works as expected, however, if I run it as a daemon it produces the same amount of files but with silence in almost the whole file.

  This is the line I execute from python :

  def convert_to_ffmpeg(file, ffmpeg_folder, chunk_length):
  
      res = -1
  
      try:
  
          file_name = os.path.join(ffmpeg_folder, ntpath.basename(file) + ".flac")
  
          res = os.system("ffmpeg -i " + file + " -f segment -segment_time "+str(chunk_length)+" " + file_name + " -y  >/dev/null 2>&1")
  
      except Exception as e:
  
          raise MyException(code=210005, detalails=file, cause=e)
  
      if not res == 0:
  
          raise MyException(code=210004, detalails=str(res) + " - " + file)
  
      return file_name

  When I run it from a normal console it works as expected : it splits the video in chunks of "self._chunk_length" seconds.

  However, if I run the program using python-daemon with this code :

  if daemon_run:
  
      pid_file = check_unclean_exit(config['pidfile'], log)
  
  
  
      context = daemon.DaemonContext(
  
          working_directory=approot,
  
          umask=0o002,
  
          pidfile=pid_file,
  
      )
  
      context.signal_map = {
  
          signal.SIGTERM: programa_cleanup,
  
          signal.SIGHUP: 'terminate',
  
          # signal.SIGUSR1: reload_program_config,
  
      }
  
  
  
      with context:
  
          convert_to_ffmpeg("/foo/testfile.mkv", "/foo/ffmpeg", 40) 

  It produces EXACTLY the same chunks, however, most of the content of the chunks is just silence. It splits in the proper point, but doesn’t fill the contents of the audio output properly. Of course, no exception is thrown, as ffmpeg always returns 0

  I did even install a completly fresh Debian 9 into a virtual machine to discard problems with ffmpeg and my old-good computer’s setup.

  Of course this is a simplified example. The real thing is a multithread application which watches a directory for files to convert.

• Undefined symbols av_register_all()

  8 mai 2018, par JaSHin

  Good day,

  I am beginner in Objective-C and Xcode IDE. I am trying use ffmpeg in my iOS application. I cloned https://github.com/kewlbear/FFmpeg-iOS-build-script and build for arm64 and x86_64.

  When I wanted to build app it crashed with

  Ld /Users/nikolajpognerebko/Library/Developer/Xcode/DerivedData/CPP3-eowdhpsbeagmxydsrsscofhtuwtl/Build/Products/Debug-iphonesimulator/CPP3.app/CPP3 normal x86_64
  
  cd /Volumes/sedy/xcode/CPP3
  
  export IPHONEOS_DEPLOYMENT_TARGET=9.1
  
  export PATH="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
  
  /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator9.1.sdk -L/Users/nikolajpognerebko/Library/Developer/Xcode/DerivedData/CPP3-eowdhpsbeagmxydsrsscofhtuwtl/Build/Products/Debug-iphonesimulator -L/Volumes/sedy/xcode/CPP3/CPP3/ffmpeg/lib -F/Users/nikolajpognerebko/Library/Developer/Xcode/DerivedData/CPP3-eowdhpsbeagmxydsrsscofhtuwtl/Build/Products/Debug-iphonesimulator -filelist /Users/nikolajpognerebko/Library/Developer/Xcode/DerivedData/CPP3-eowdhpsbeagmxydsrsscofhtuwtl/Build/Intermediates/CPP3.build/Debug-iphonesimulator/CPP3.build/Objects-normal/x86_64/CPP3.LinkFileList -Xlinker -rpath -Xlinker @executable_path/Frameworks -mios-simulator-version-min=9.1 -Xlinker -objc_abi_version -Xlinker 2 -stdlib=libc++ -fobjc-arc -fobjc-link-runtime -lavcodec -lavdevice -lavfilter -lavformat -lavutil -lswresample -lswscale -framework AVFoundation -liconv -lbz2 -Xlinker -dependency_info -Xlinker /Users/nikolajpognerebko/Library/Developer/Xcode/DerivedData/CPP3-eowdhpsbeagmxydsrsscofhtuwtl/Build/Intermediates/CPP3.build/Debug-iphonesimulator/CPP3.build/Objects-normal/x86_64/CPP3_dependency_info.dat -o /Users/nikolajpognerebko/Library/Developer/Xcode/DerivedData/CPP3-eowdhpsbeagmxydsrsscofhtuwtl/Build/Products/Debug-iphonesimulator/CPP3.app/CPP3
  
  
  
  Undefined symbols for architecture x86_64:
  
    "av_register_all()", referenced from:
  
        Decoder::Decoder() in ViewController.o
  
  ld: symbol(s) not found for architecture x86_64
  
  clang: error: linker command failed with exit code 1 (use -v to see invocation)

  There is zipped project on OneDrive http://1drv.ms/1KkPAia because it is a best way to explain my problem.

  Please help me and explain, what this problem arose.

  Thanks very much.

• Anomalie #3210 : flux rss sur les forums

  26 juin 2014, par jluc -

  Si j’en crois http://zone.spip.org/trac/spip-zone/changeset/83493 le dernier point est normal.
  C’était il y a longtemps donc je ne suis plus certain des premiers mais peut être bien qu’il faut fermer ce signalement.