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• How to salvage a gigantic, possibly corrupt, AIFF file ?

  12 février 2012, par Ross Duncan

  Due to a Sound Track Pro glitch, I have a problematic AIF file. It plays fine in QuickTime Player, and is about 1 hour 50 mins long. However :

  • It's 3.81GB in size, whereas (I believe) AIF files are only supposed to be 2GB or smaller.
  • iTunes refuses to play it.
  • Logic Pro gives the error message "party-mix.aif is empty!" when I try to import it.
  • VLC will open and play the file, but it ends after an 1 hour (I guess this is the 2GB point).

  • Attempting to transcode using ffmpeg to Ogg gives the errors,

    [aiff @ 0x102051000] max_analyze_duration 5000000 reached at 5001333

    ....

    [pcm_s16be @ 0x10205a200] invalid PCM packet

    but the resulting file plays in VLC up till 1 hour, when it ends.

  • Attempting to transcode using ffmpeg to MP3 gives similar results as Ogg, except that the number of channels must reduced from 6 to 2. This is odd because it was a stereo project - where the extra 4 channels came from I have no idea.
  • There are a few places where the audio has been very noticeably sped up.

  My question : how can I transcode this frankenstein monster to MP3 without losing the second half ? I am running Mac OS 10.6.8.

• ffmpeg install fail OSX 10.7.2

  3 mars 2012, par egermano

  Can you help me ?

  I try to install a ffmpeg using a brew, but i can't.

  It seems like the dependencies was successfully installed.

  I am using a Mac OSX 10.7.2 and the XCode 4.2.1.

  I couldn't install ffmpeg.

  I've tried :

  brew install ffmpeg
  
  brew install --use-clang ffmpeg
  
  brew install --use-clang --HEAD ffmpeg

  And they've all failed.

  This is the result log.

  $ brew install --use-clang ffmpeg
  
  ==> Downloading http://ffmpeg.org/releases/ffmpeg-0.9.1.tar.bz2
  
  File already downloaded in /Users/brunogermano/Library/Caches/Homebrew
  
  ==> ./configure --prefix=/usr/local/Cellar/ffmpeg/0.9.1 --enable-shared --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-libfreetype --cc=/usr/bi
  
  ERROR: libmp3lame >= 3.98.3 not found
  
  
  
  If you think configure made a mistake, make sure you are using the latest
  
  version from Git.  If the latest version fails, report the problem to the
  
  ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
  
  Include the log file "config.log" produced by configure as this will help
  
  solving the problem.
  
  ==> Exit Status: 1
  
  http://github.com/mxcl/homebrew/blob/master/Library/Formula/ffmpeg.rb#L61
  
  ==> Environment
  
  HOMEBREW_VERSION: 0.8.1
  
  HEAD: 44213dfb4861c1307fdc4ae41e139404f0e1ffb1
  
  HOMEBREW_PREFIX: /usr/local
  
  HOMEBREW_CELLAR: /usr/local/Cellar
  
  Hardware: dual-core 64-bit penryn
  
  OS X: 10.7.2
  
  Kernel Architecture: x86_64
  
  Ruby: 1.8.7-249
  
  /usr/bin/ruby => /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
  
  Xcode: 4.2.1
  
  GCC-4.0: N/A
  
  GCC-4.2: N/A
  
  LLVM: build 2336
  
  Clang: 3.0 build 211
  
  MacPorts or Fink? false
  
  X11 installed? true
  
  ==> Build Flags
  
  "--use-clang" was specified
  
  CC: /usr/bin/clang
  
  CXX: /usr/bin/clang++ => /usr/bin/clang
  
  LD: /usr/bin/clang
  
  CFLAGS: -O3 -w -pipe -march=native
  
  CXXFLAGS: -O3 -w -pipe -march=native
  
  CPPFLAGS: -I/usr/X11/include
  
  LDFLAGS: -L/usr/X11/lib
  
  MAKEFLAGS: -j2
  
  
  
  Error: Failed executing: ./configure --prefix=/usr/local/Cellar/ffmpeg/0.9.1 --enable-shared --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-libfreetype --cc=/usr/bin/clang --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libxvid --disable-ffplay
  
  These existing issues may help you:
  
      https://github.com/mxcl/homebrew/issues/8456
  
      https://github.com/mxcl/homebrew/issues/8815
  
      https://github.com/mxcl/homebrew/issues/9399
  
  Otherwise, please report the bug:
  
      https://github.com/mxcl/homebrew/wiki/checklist-before-filing-a-new-issue
  
  We saved the configure log, please gist it if you report the issue:
  
      ~/Library/Logs/Homebrew/config.log

  This is the brew doctor log :

  $ brew doctor
  
  Unbrewed dylibs were found in /usr/local/lib.
  
  
  
  If you didn't put them there on purpose they could cause problems when
  
  building Homebrew formulae, and may need to be deleted.
  
  
  
  Unexpected dylibs:
  
      /usr/local/lib/libavcodec.52.108.0.dylib
  
      /usr/local/lib/libavcore.0.16.1.dylib
  
      /usr/local/lib/libavdevice.52.2.3.dylib
  
      /usr/local/lib/libavfilter.1.74.0.dylib
  
      /usr/local/lib/libavformat.52.93.0.dylib
  
      /usr/local/lib/libavutil.50.36.0.dylib
  
      /usr/local/lib/libfaad.2.0.0.dylib
  
      /usr/local/lib/libguide.dylib
  
      /usr/local/lib/libmp3lame.0.0.0.dylib
  
      /usr/local/lib/libswscale.0.12.0.dylib
  
  
  
  Unbrewed static libraries were found in /usr/local/lib.
  
  
  
  If you didn't put them there on purpose they could cause problems when
  
  building Homebrew formulae, and may need to be deleted.
  
  
  
  Unexpected static libraries:
  
      /usr/local/lib/libavcodec.a
  
      /usr/local/lib/libavcore.a
  
      /usr/local/lib/libavdevice.a
  
      /usr/local/lib/libavfilter.a
  
      /usr/local/lib/libavformat.a
  
      /usr/local/lib/libavutil.a
  
      /usr/local/lib/libfaad.a
  
      /usr/local/lib/libmp4ff.a
  
      /usr/local/lib/libswscale.a
  
  
  
  Unbrewed .pc files were found in /usr/local/lib/pkgconfig.
  
  
  
  If you didn't put them there on purpose they could cause problems when
  
  building Homebrew formulae, and may need to be deleted.
  
  
  
  Unexpected .pc files:
  
      /usr/local/lib/pkgconfig/libavcodec.pc
  
      /usr/local/lib/pkgconfig/libavcore.pc
  
      /usr/local/lib/pkgconfig/libavdevice.pc
  
      /usr/local/lib/pkgconfig/libavfilter.pc
  
      /usr/local/lib/pkgconfig/libavformat.pc
  
      /usr/local/lib/pkgconfig/libavutil.pc
  
      /usr/local/lib/pkgconfig/libswscale.pc
  
  
  
  Unbrewed .la files were found in /usr/local/lib.
  
  
  
  If you didn't put them there on purpose they could cause problems when
  
  building Homebrew formulae, and may need to be deleted.
  
  
  
  Unexpected .la files:
  
      /usr/local/lib/libfaad.la
  
      /usr/local/lib/libmp3lame.la
  
  
  
  We couldn't detect gcc 4.2.x. Some formulae require this compiler.
  
  NOTE: Versions of XCode newer than 4.2 don't include gcc 4.2.x.
  
  
  
  ==> /usr/bin occurs before /usr/local/bin
  
  This means that system-provided programs will be used instead of those
  
  provided by Homebrew. This is an issue if you eg. brew installed Python.
  
  
  
  Consider editing your .bashrc to put:
  
    /usr/local/bin
  
  ahead of /usr/bin in your PATH.
  
  Some brews install binaries to sbin instead of bin, but Homebrew's
  
  sbin was not found in your path.
  
  
  
  Consider editing your .bashrc to add:
  
    /usr/local/sbin
  
  to the PATH variable.
  
  
  
  Some "config" scripts were found in your path, but not in system or Homebrew folders.
  
  
  
  `./configure` scripts often look for *-config scripts to determine if software packages
  
  are installed, and what additional flags to use when compiling and linking.
  
  
  
  Having additional scripts in your path can confuse software installed via Homebrew if
  
  the config script overrides a system or Homebrew provided script of the same name.
  
  
  
  /Library/Frameworks/Python.framework/Versions/Current/bin
  
      python-config python2.5-config

  Anyone can help me ?

• UAC compliant webcams (mic) Access under Android in general and under FFMPEG for Android

  21 décembre 2012, par user1545779

  The traditional way to access a UAC compliant webcam mic has always been :
  ffmpeg -f alsa -i plughw:CARD=U0x46d0x821,DEV=0
  under Android versions upto and including version 4.0 However as we all know, alsa implementation is one of the most problematic areas in sound implementation on Android.

  Has there been any changes in recent versions of Android as to how to access the builtin mic in a UAC complaint webcam or for that matter a USB mic