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• How to convert audio files from mp4 to mp3 using applescript ?

  15 décembre 2017, par MBUST

  Can someone please help me understand how to convert audio files from mp4 to mp3 using AppleScript ?

  I have tried scripting VLC or Sound Studio but the commands don’t seem to come close to doing that. I downloaded and installed ffmpeg but I don’t know the syntax to use.

  I tried something like this with ffmpeg :

   tell application "Finder"
  
  set CurrentPath to container of (path to me) as alias
  
  set OriginalFile to CurrentPath & "ASProcessing:SoundToProcess.mp4" as string
  
  set NewFile to CurrentPath & "ASProcessing:NewFile.mp3" as string
  
  
  
  end tell
  
  
  
  
  
   set outputFile to POSIX path of OriginalFile
  
   set inputFile to POSIX path of NewFile
  
   do shell script ffmpeg something, something

  But clearly I’m missing most of the script syntax. Eventually, I would do a repeat loop to go through a set of files.

  Sorry that I can’t be more specific. I’m pretty lost with this. What I do know is that I do not want to use Automator. I need something like AppleScript.

  Thanks.

  mbust

• X264 : How to compile x264 with swscale support ?

  23 avril 2014, par user1884325

  Objective

  I am trying to build :

  • an x264 static library (.lib) with swscale support. I would like to use this library in a Visual Studio project where 24-bit RGB bitmap images are :

    1. Converted from RGB to YUV2
    2. The converted image is sent to the x264 encoder
    3. and the output of the encoder is streamed to a remote IP-endpoint via UDP.

  • an x264 executable (.exe) with swscale support. I would like to use the executable for the same purpose as described above. In another Visual Studio project, I will start the x264.exe up as a separate process and pipe bitmap data to the x264 process via its stdin and read out the encoded data from the process’s stdout.

  Problem

  I am having some trouble figuring out how to compile with swscale support. I need swscale support for both the executable and the library.

  Status

  So far I have downloaded the latest x264 source from the x264 website.

  I have installed MINGW on my machine and when I run ’configure’ and ’make’ I get the x264 static library - but without swscale support.

  I haven’t been able to find a detailed step-by-step guide on how to include swscale in the x264 library. The closest I’ve come to a description is this discussion :

  http://forum.doom9.org/showthread.php?t=165350

  So I downloaded libpack from :

  http://komisar.gin.by/mingw/index.html

  and extracted it to my harddrive :

  Then I executed ’make’ and ’configure’ (again) in my x264 directory :

  ./configure --extra-cflags="-I/m/somePath/libpack/libpack/libpack/include" --extra-ldflags="-L/m/somePath/libpack/libpack/libpack/lib"

  I have the following in the lib and include directory :

  

  

  When I execute the above ’configure’ I get :

  platform:      X86
  
  system:        WINDOWS
  
  cli:           yes
  
  libx264:       internal
  
  shared:        no
  
  static:        no
  
  asm:           yes
  
  interlaced:    yes
  
  avs:           avisynth
  
  lavf:          no
  
  ffms:          no
  
  mp4:           lsmash
  
  gpl:           yes
  
  thread:        win32
  
  opencl:        yes
  
  filters:       crop select_every
  
  debug:         no
  
  gprof:         no
  
  strip:         no
  
  PIC:           no
  
  bit depth:     8
  
  chroma format: all
  
  
  
  You can run 'make' or 'make fprofiled' now.
  
  bash.exe"-3.1$

  When I execute ’make’ I end up with this error :

  gcc.exe: error: unrecognized command line option '-fomit-frame-poin'
  
  gcc.exe: fatal error: no input files
  
  compilation terminated.
  
  make: *** [.depend] Error 1
  
  bash.exe"-3.1$

  Question
  What am I doing wrong ??

• Revision 9d3fb75530 : rtcd : relocate 'extern "C" {' declaration Place after pulling in forward declar

  19 septembre 2014, par James Zern

  Changed Paths :
   Modify /build/make/rtcd.pl

  
  
  rtcd : relocate ’extern "C" ’ declaration

  Place after pulling in forward declarations from the codec. This fixes
  compilation of the tests under vs9.

  Since
  10783d4 Adds high bitdepth transform functions and tests
  where vp9_idct.h was added to vp9_rtcd.h the tests are pulling in
  vp9_systemdependent.h, which under visual studio include intrin.h. With
  VS9 these include headers which define helper classes for intel
  intrinsics. When including it in the tests (via vp9_rtcd.h) __cplusplus
  is defined but vp9_rtcd.h would wrap declarations in ’extern "C" ’
  causing a mismatch in linkage which resulted in compilation failure.

  Change-Id : I475e50198b71320e8606bc95c9454876d8799ede