yosimasu/iframeextractor

Extract frames from iPhone videos using the FFMpeg libraries.

original copyright

This project extracts frames from video recorded by iPhone 3Gs using the LGPL FFmpeg libraries.

This software is licensed under the GNU-LGPL version 2.1 or later.

Copyright 2010 Lajos Kamocsay

lajos at codza dot com

Introduction

This project is forked from https://github.com/lajos/iFrameExtractor. I update the code for the latest ffmpeg and iOS version. The source code is tested on Mac OS 10.7.4(Lion) for ffmpeg 0.11.1 and iOS 5.1 with Xcode 4.3.2.

Build steps

• Download the code using

git clone git://github.com/PinkyJie/iFrameExtractor.git

• Download the latest ffmpeg (0.11.1 tested) using

git clone git://source.ffmpeg.org/ffmpeg.git

• Put the ffmpeg source code into the folder ffmpeg

• Copy the perl script gas-preprocessor.pl into /usr/local/bin folder

• Change directory to your ffmpeg folder, select your target platform and follow the scripts below

Platforms

• armv7 (for iPhone 3GS and devices after 3GS)

configure

./configure \

--cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \

--as='/usr/local/bin/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' \

--sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk \

--target-os=darwin \

--arch=arm \

--cpu=cortex-a8 \

--extra-cflags='-arch armv7' \

--extra-ldflags='-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk' \

--prefix=compiled/armv7 \

--enable-cross-compile \

--enable-nonfree \

--enable-gpl \

--disable-armv5te \

--disable-swscale-alpha \

--disable-doc \

--disable-ffmpeg \

--disable-ffplay \

--disable-ffprobe \

--disable-ffserver \

--disable-asm \

--disable-debug

make

make clean

make && make install

• armv6 (for devices before 3GS)

configure

./configure \

--cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \

--as='/usr/local/bin/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' \

--sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk \

--target-os=darwin \

--arch=arm \

--cpu=arm1176jzf-s \

--extra-cflags='-arch armv6' \

--extra-ldflags='-arch armv6 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk' \

--prefix=compiled/armv6 \

--enable-cross-compile \

--enable-nonfree \

--enable-gpl \

--disable-armv5te \

--disable-swscale-alpha \

--disable-doc \

--disable-ffmpeg \

--disable-ffplay \

--disable-ffprobe \

--disable-ffserver \

--disable-asm \

--disable-debug

make

make clean

make && make install

• i386 (for simulator)

configure

./configure \

--cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc \

--as='/usr/local/bin/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc' \

--sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk \

--target-os=darwin \

--arch=i386 \

--cpu=i386 \

--extra-cflags='-arch i386' \

--extra-ldflags='-arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator5.1.sdk' \

--prefix=compiled/i386 \

--enable-cross-compile \

--enable-nonfree \

--enable-gpl \

--disable-armv5te \

--disable-swscale-alpha \

--disable-doc \

--disable-ffmpeg \

--disable-ffplay \

--disable-ffprobe \

--disable-ffserver \

--disable-asm \

--disable-debug

make

make clean

make && make install

• universal (using one *.a files for all platforms)

mkdir -p ./compiled/fat/lib

lipo -output ./compiled/fat/lib/libavcodec.a -create \

-arch armv6 ./compiled/armv6/lib/libavcodec.a \

-arch armv7 ./compiled/armv7/lib/libavcodec.a \

-arch i386 ./compiled/i386/lib/libavcodec.a

lipo -output ./compiled/fat/lib/libavdevice.a -create \

-arch armv6 ./compiled/armv6/lib/libavdevice.a \

-arch armv7 ./compiled/armv7/lib/libavdevice.a \

-arch i386 ./compiled/i386/lib/libavdevice.a

lipo -output ./compiled/fat/lib/libavformat.a -create \

-arch armv6 ./compiled/armv6/lib/libavformat.a \

-arch armv7 ./compiled/armv7/lib/libavformat.a \

-arch i386 ./compiled/i386/lib/libavformat.a

lipo -output ./compiled/fat/lib/libavutil.a -create \

-arch armv6 ./compiled/armv6/lib/libavutil.a \

-arch armv7 ./compiled/armv7/lib/libavutil.a \

-arch i386 ./compiled/i386/lib/libavutil.a

lipo -output ./compiled/fat/lib/libswresample.a -create \

-arch armv6 ./compiled/armv6/lib/libswresample.a \

-arch armv7 ./compiled/armv7/lib/libswresample.a \

-arch i386 ./compiled/i386/lib/libswresample.a

lipo -output ./compiled/fat/lib/libpostproc.a -create \

-arch armv6 ./compiled/armv6/lib/libpostproc.a \

-arch armv7 ./compiled/armv7/lib/libpostproc.a \

-arch i386 ./compiled/i386/lib/libpostproc.a

lipo -output ./compiled/fat/lib/libswscale.a -create \

-arch armv6 ./compiled/armv6/lib/libswscale.a \

-arch armv7 ./compiled/armv7/lib/libswscale.a \

-arch i386 ./compiled/i386/lib/libswscale.a

lipo -output ./compiled/fat/lib/libavfilter.a -create \

-arch armv6 ./compiled/armv6/lib/libavfilter.a \

-arch armv7 ./compiled/armv7/lib/libavfilter.a \

-arch i386 ./compiled/i386/lib/libavfilter.a

The complied static libraries (*.a) lie in theffmpeg/compiled folder.