How to build:
* Setup git and yasm 1.1.x environment. The macports is easy solution.
* NOTICE: This build requires Leopard+Xcode 3.1, or SnowLeopard+Xcode 3.2.
* CoreVF framework should be installed prior to build.

* clone git repository first
  $ cd your-working-directory
  $ git clone git://github.com/MyCometG3/x264Encoder.git

* get latest libx264, tag rev.number, create symlink
  $ cd repository-base-folder                      ### x264Encoder local repository
  $ rm -rf x264.org; mv x264???? x264.org          ### rename original x264 folder
  $ git clone git://git.videolan.org/x264.git x264.new
  $ cd x264.new
  $ NEWNAME="x264`git rev-list HEAD | sort | wc -l | awk '{ print $1; }'`"
  $ cd ..
  $ mv x264.new ${NEWNAME}                         ### name would be x2641629 or so
  $ rm x264; ln -s ${NEWNAME} x264                 ### recreate symlink
  $ cd x264                                        ### follow symlink
  $ cat ../x264.*.diff | patch -p1 -d.             ### apply patches
  $ cp -pr ../x264.org/x264.xcodeproj .            ### copy project file

* Get latest ffmpeg, tag rev.number, create symlink.
  $ cd repository-base-folder                      ### x264Encoder local repository
  $ rm -rf libav.org; mv libav????? libav.org      ### rename original libav
  $ git clone git://git.ffmpeg.org/ffmpeg.git ffmpeg.new
  $ cd libav.new
  $ NEWNAME="libav`git rev-list HEAD | sort | wc -l | awk '{ print $1; }'`"
  $ cd ..
  $ mv libav.new ${NEWNAME}                        ### name would be libav23501 or so
  $ rm libav; ln -s ${NEWNAME} libav               ### recreate symlink
  $ cd libav                                       ### follow symlink
  $ cat ../ffmpeg.*.diff | patch -p1 -d.           ### apply patches
  $ cp -pr ../libav.org/libav.xcodeproj .          ### copy project file

* build libx264.a using Xcode
  $ cd repository-base-folder                      ### x264Encoder local repository
  $ cd x264                                        ### follow symlink
  $ xcodebuild -target "Build Universal" -configuration "Release"
  $ ls -l *.a

* build libavcodec.a and others using Xcode
  $ cd repository-base-folder                      ### x264Encoder local repository
  $ cd libav                                       ### follow symlink
  $ xcodebuild -target "Build Universal" -configuration "Release"
  $ ls -l *.a

* build UIbundle.bundle using Xcode.
  $ cd repository-base-folder                      ### x264Encoder local repository
  $ cd UIbundle
  $ rm -rf build ; xcodebuild -target "UIbundle" -configuration "Release"
  $ ls -ld *.bundle

* build x264Encoder.component using Xcode.
  $ cd repository-base-folder                      ### x264Encoder local repository
  $ cd source
  $ # vi Info.plist                                ### Edit as is
  $ # vi x264EncoderVersion.h                      ### Edit as is
  $ rm -rf build ; xcodebuild -target "BuildAndCopy" -configuration "Release"
  $ ls -ld ~/Library/QuickTime/x264Encoder.*

NOTE: Build target "Build and Copy" will copy stripped x264Encoder.component into /Users/XXX/Library/QuickTime/.