Question

我看过很多关于FFmpeg和在Android中使用FFmpeg的帖子，但我发现这些帖子中的大多数都是针对FFmpeg或Android NDK的旧版本。我能够从https://github.com/mconf/android-ffmpeg获得结果，其中包括文件：“libavcodec.so”，“libavformat.so”，“libavutil.so”，“libswscale.so”。但是，仅仅将这些文件添加到我的项目中似乎不足以使用FFmpeg。（我跟着https://stackoverflow.com/a/21773572/1877798作为参考指南）。我可能在项目中配置这些文件时做错了，或者我在为Android构建FFmpeg时做错了。（应该有更多文件吗？）

我想知道是否有最近在Android项目中构建或集成FFmpeg的指南。我正在使用FFmpeg（截至2014年2月27日）和Android NDK 9c。如果没有，是否有人对其他图书馆有其他建议？我正在尝试拍摄一组图像文件并以编程方式创建视频/动画gif。

谢谢！： - ）

~~编辑~~

我在GitHub上找到了http://www.roman10.net/how-to-build-ffmpeg-with-ndk-r9/comment-page-4/和其他几个人。然而，他们似乎都在努力建造FFmpeg。我使用的是Mac OS X

这是我的剧本：

#!/bin/bash
NDK=/Downloads/android-ndk-r9c
SYSROOT=$NDK/platforms/android-18/arch-arm/
TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/darwin-x86_64
# Note: Change the TOOLCHAIN to match that available for your host system.
# darwin-x86_64 is for Mac OS X, but you knew that.
function build_one
{
./configure \
    --prefix=$PREFIX \
    --enable-shared \
    --disable-static \
    --disable-doc \
    --disable-programs \
    --disable-doc \
    --disable-symver \
    --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
    --target-os=linux \
    --arch=arm \
    --enable-cross-compile \
    --sysroot=$SYSROOT \
    --extra-cflags="-Os -fpic $ADDI_CFLAGS" \
    --extra-ldflags="$ADDI_LDFLAGS" \
$ADDITIONAL_CONFIGURE_FLAG
make clean
make
make install
}
CPU=arm
PREFIX=$(pwd)/android/$CPU 
ADDI_CFLAGS="-marm"
build_one

这是日志：

Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-        dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/c++/4.2.1
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/c++/4.2.1
/Downloads/android-ndk-r9c/toolchains/arm-linux-androideabi-4.8/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-gcc is unable to create an executable file.
C compiler test failed.

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.
Makefile:2: config.mak: No such file or directory
Makefile:48: /common.mak: No such file or directory
Makefile:91: /libavutil/Makefile: No such file or directory
Makefile:91: /library.mak: No such file or directory
Makefile:168: /doc/Makefile: No such file or directory
Makefile:169: /tests/Makefile: No such file or directory
make: *** No rule to make target `/tests/Makefile'.  Stop.
Makefile:2: config.mak: No such file or directory
Makefile:48: /common.mak: No such file or directory
Makefile:91: /libavutil/Makefile: No such file or directory
Makefile:91: /library.mak: No such file or directory
Makefile:168: /doc/Makefile: No such file or directory
Makefile:169: /tests/Makefile: No such file or directory
make: *** No rule to make target `/tests/Makefile'.  Stop.
Makefile:2: config.mak: No such file or directory
Makefile:48: /common.mak: No such file or directory
Makefile:91: /libavutil/Makefile: No such file or directory
Makefile:91: /library.mak: No such file or directory
Makefile:168: /doc/Makefile: No such file or directory
Makefile:169: /tests/Makefile: No such file or directory
make: *** No rule to make target `/tests/Makefile'.  Stop.

Answer 1

尝试一下迄今为止我用过的最好的一个：https://github.com/bbcallen/ijkplayer

Answer 2

我有同样的错误。

＆＃34; Makefile：2：config.mak：没有这样的文件或目录 Makefile：48：/common.mak：没有这样的文件或目录 Makefile：91：/ libavutil / Makefile：没有这样的文件或目录 Makefile：91：/library.mak：没有这样的文件或目录 Makefile：168：/ doc / Makefile：没有这样的文件或目录 Makefile：169：/ tests / Makefile：没有这样的文件或目录 make：***没有规则来制作目标`/ tests / Makefile＆＃39;。停止＆＃34;

请检查脚本内的目录路径是否正确。 i.e.:'/Downloads/android-ndk-r9c/toolchains/arm-linux-androideabi-4.8/prebuilt/darwin-x86_64/"

我认为它实际上是＆＃34; $ HOME / Downloads＆＃34;

还要确保您在＆＃34; ... / android-ndk-r9c / sources / FFMPEG /＆＃34;中运行脚本。。目录

Answer 3

您需要修复NDK路径不正确。它可能是：NDK = / user // Downloads / android-ndk-r9c

你想在浏览器中检查：

文件：///用户/ XYZ /下载/机器人-NDK-R9C

如果有效则打开“android-ndk-r9c”文件夹。当你成功，然后把它放在你的NDK路径上并构建。

Answer 4

我在mac os x中使用android ndk r10e和ffmpeg 2.7.1以及yasm 1.2.0（所有在downloads文件夹中）

#!/bin/bash
# Usage:
# put this script in top of FFmpeg source tree
# ./build_android
# It generates binary for following architectures:
# ARMv6
# ARMv6+VFP
# ARMv7+VFPv3-d16 (Tegra2)
# ARMv7+Neon (Cortex-A8)
# set $CPU and $OPTIMIZE_CFLAGS
# call build_one

NDK=$Users/samavesh/Downloads/android-ndk-r10e
SYSROOT=$NDK/platforms/android-9/arch-arm/
TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/darwin-x86_64

function build_one
{
./configure --target-os=linux \
--prefix=$PREFIX \
--enable-cross-compile \
--extra-libs="-lgcc" \
--arch=arm \
--cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
--cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
--nm=$PREBUILT/bin/arm-linux-androideabi-nm \
--sysroot=$PLATFORM \
--extra-cflags=" -O3 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex \
-fasm -Wno-psabi -fno-short-enums  -fno-strict-aliasing -finline-limit=300     $OPTIMIZE_CFLAGS " \
--disable-shared \
--enable-static \
--extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib  -    nostdlib -lc -lm -ldl -llog" \
--enable-parsers \
--enable-encoders  \
--enable-decoders \
--disable-muxers \
--enable-demuxers \
--enable-swscale  \
--disable-ffmpeg \
--disable-ffplay \
--disable-ffprobe \
--disable-ffserver \
--enable-network \
--enable-indevs \
--disable-bsfs \
--enable-filters \
--enable-protocols  \
--enable-asm \
$ADDITIONAL_CONFIGURE_FLAG

#make clean
make  -j4 install
$PREBUILT/bin/arm-linux-androideabi-ar d libavcodec/libavcodec.a inverse.o

$PREBUILT/bin/arm-linux-androideabi-ld -rpath-link=$PLATFORM/usr/lib \
-L$PLATFORM/usr/lib  -soname libffmpeg.so -shared -nostdlib \
-Bsymbolic --whole-archive --no-undefined -o $PREFIX/libffmpeg.so \
libavcodec/libavcodec.a libavdevice/libavdevice.a libavfilter/libavfilter.a \
libavformat/libavformat.a libavutil/libavutil.a libswscale/libswscale.a \
libswresample/libswresample.a -lc -lm -lz -ldl -llog \
--dynamic-linker=/system/bin/linker \
$PREBUILT/lib/gcc/arm-linux-androideabi/4.8/libgcc.a
}

#arm v6 ¹öÀü ÄÄÆÄÀÏ
CPU=armv6
OPTIMIZE_CFLAGS="-marm -march=$CPU"
PREFIX=./android/$CPU
ADDITIONAL_CONFIGURE_FLAG=
#build_one

#arm v7vfpv3 ¹öÀü ÄÄÆÄÀÏ
CPU=armv7-a
OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=$CPU "
PREFIX=./android/$CPU
ADDITIONAL_CONFIGURE_FLAG=
#build_one

#arm v7vfp ¹öÀü ÄÄÆÄÀÏ
CPU=armv7-a
OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU "
PREFIX=./android/$CPU-vfp
ADDITIONAL_CONFIGURE_FLAG=
build_one

#arm v7n ¹öÀü ÄÄÆÄÀÏ
CPU=armv7-a
OPTIMIZE_CFLAGS="-mfloat-abi=softfp -mfpu=neon -marm -march=$CPU -mtune=cortex-a8"
PREFIX=./android/$CPU
ADDITIONAL_CONFIGURE_FLAG=--enable-neon
#build_one

#arm v6+vfp ¹öÀü ÄÄÆÄÀÏ
CPU=armv6
OPTIMIZE_CFLAGS="-DCMP_HAVE_VFP -mfloat-abi=softfp -mfpu=vfp -marm -march=$CPU"
PREFIX=./android/${CPU}_vfp
ADDITIONAL_CONFIGURE_FLAG=
#build_one

Android - 集成ffmpeg和android-ndk-r9c

4 个答案: