1. 用vs2017编译ffmpeg 4.0.3，并可调试
1.1 MSYS
使用MSYS 1.0和2.0在这里都成功了，建议使用MSYS 2.0的方案。这个文章，已经放到git上面了，并开源了https://github.com/passer2019/xmplayer
1.2 计划构造一个android studio的工程，目标是可以调试C语言代码部分。
- 运行环境：ubuntu 18.04或centos 7
- 开发工具 android studio 3.2.1
- android 环境: android-21 (也就是 android 5或以上，不考虑android 5以前的版本)
- ffmpeg下载地址：https://ffmpeg.org/releases/ffmpeg-4.0.3.tar.bz2， 在https://ffmpeg.org/releases可以看到所有的发部包下载地址。
- 基于ffplay.c构建播放器
1.3 windows下面用vs2017编译
1.3.1 准备mingw环境
这个是老的方式，也可以编译出所需要库，但建议使用后面的MSYS2的方式 可以编译出ffplay.exe
- 下载MinGW安装器，下载地址：http://www.mingw.org/ ，对应的位置 https://osdn.net/projects/mingw/releases/68260，可能会变。
- 具体的地址：https://osdn.net/projects/mingw/downloads/68260/mingw-get-setup.exe/
- 下载完成后安装，请按下列图操作，即可。(我这里默认是发装到C:\MinGW目录）
- 注意：请不要出现中文目录，可能会有想不到的问题
然后等它他安装完成。
1.3.2 下载yasm
- 下载yasm.exe，下载地址： http://yasm.tortall.net/ ；我这里只下载了32位版本了。
- 具体地址：http://yasm.tortall.net/Download.html
-
我这里下载的是 http://www.tortall.net/projects/yasm/releases/yasm-1.3.0-win32.exe， 下载完成后，改名为yasm.exe，并复制到C:\MinGW\msys\1.0\bin目录下。
-
这样就完成了MinGW的32位环境
1.3.3 安装vs2017
- 这个网上大把文章，就不在这里说明了
1.3.4 配置运行环境的脚本
- 复制一个C:/MinGW/msys/1.0/msys.bat为C:/MinGW/msys/1.0/msys_vs2017.bat
- 编辑msys_vs2017.bat，并在第一行的@echo off的后面，增加下面一条语句（注意：这里的vs2017是默认安装的）
call "C:/program Files (x86)/Microsoft Visual Studio/2017/Enterprise/VC/Auxiliary/Build/vcvars32.bat"- 完成后，如下：
@echo off
call "C:/program Files (x86)/Microsoft Visual Studio/2017/Enterprise/VC/Auxiliary/Build/vcvars32.bat"
rem Copyright (C): 2001, 2002, 2003, 2004, 2005 Earnie Boyd
rem mailto:[email protected]
rem This file is part of Minimal SYStem
rem http://www.mingw.org/msys.shtml
rem
rem File: msys.bat
rem Revision: 2.4
rem Revision Date: December 8th, 2005
... ... 余下未修改的，略去1.3.5 Debug编译
- 在windows文件管理器下，双击运行msys_vs2017.bat,启动依赖环境
- 这里ffmpeg解压到c:\ffmpeg4.0.3 输入
cd c:/ffmpeg4.0.3
# 在这里可以看到configure这个文件 按照我以前的理解习惯，以为是cd /cygdrive/c/ffmpeg4.0.3 但是在这个msys则不用，用cd d:则切换到d盘，其它依赖类推
- 进入代码目录后，就可以用configure生成所需的头文件和makefile了，这里是编译生成可调试的静态库,就不生成动态库了，也不使用汇编优化了
$ ./configure --disable-asm --enable-avdevice --enable-doc --disable-programs --enable-avresample --disable-shared --enable-static --disable-bzlib --enable-gray --disable-libopenjpeg --disable-iconv --disable-zlib --prefix=./vs2017_build --toolchain=msvc --arch=x86 --extra-cflags="-MDd" --extra-ldflags="/NODEFAULTLIB:libcmt" --enable-debug
$ make -j4 #我这里是4核的CPU，所以用-j4，如果是双核的则-j2，八核的则-j8
$ make install
# 如果要修改配置选项，请用 ./configure --help查找编译选项- 完成后，在./vs2017_build如下：
- 到这里，就完成了，所有需要的头文件和库了
1.3.6 编译ffplay
- 这个请用下面的MSYS2环境编译
- 请确定安装了SDL2的包 mingw-w64-i686-SDL2 然后如下操作。
cd c:/ffmpeg4.0.3
./configure --enable-shared --prefix=./vs2017_ffplay
make -j4
make install
#这样，在c:/ffmpeg4.0.3/vs2017_ffplay/bin下，就能看到 ffplay.exe
#不过，还需要手动复制一些dll 在C:\msys2\mingw32\bin\下，将SDL2.dll和libbz2-1.dll复制到ffplay.exe同一个目录下，就可以了。
ffplay d:/work/ts/cctv2.ts
# 就可以看到有节目播出来了1.4 MSYS2的编译环境
- Mingw默认带的MSYS环境是1.0的版本，ffmpeg官方已经不推荐操作。 这里参考官方文档,重新定义MSYS2的编译过程。
- 1.0版本不能编译ffplay.c，这个版本可以。
- https://www.ffmpeg.org/platform.html#Windows 官方参考文档 <4 Windows>
1.4.1 下载MSYS2,并安装
- 下载地址：https://www.msys2.org/
- 安装，默认安装就可以了（我这里选择的是32位版本,i686）,没有什么
# Update the package database and core system packages（更新包数据库和核心包)
pacman -Syu
# normal msys2 packages
# pacman -S make pkgconf diffutils
# 官方提供的pkgconf不存在，试出了pkg-config这个可以安装
pacman -S make pkg-config diffutils yasm
# mingw-w64 packages and toolchains
# 下面这个是64位版本
# pacman -S mingw-w64-x86_64-nasm mingw-w64-x86_64-gcc mingw-w64-x86_64-SDL2
# 下面这个是32位版本，我这时用的是32位版本，同时这里也安装了ffplay编译，需要的SDL2
pacman -S mingw-w64-i686-nasm mingw-w64-i686-gcc mingw-w64-i686-SDL2- 然后在生成编译生成一个msys_vs2017.bat的文件，在C:\msys2目录，也就是msys2_shell.cmd所在的目录 具体内容:
set MSYS2_PATH_TYPE=inherit
call "C:/program Files (x86)/Microsoft Visual Studio/2017/Enterprise/VC/Auxiliary/Build/vcvars32.bat"
msys2_shell.cmd -mingw32-
将C:\msys2\usr\bin\link.exe改一下名，因为会和vc的link.exe重名
-
最后，就可以照着上面的“Debug编译”来编译了
1.5 创建vs2017的工程
1.5.1 创建工程
并新建一个文件main.cpp 
#include <stdio.h>
int main(int argc, char * argv[]) {
printf("hello ffmpeg!");
return 0;
}1.5.2 增加依赖头文件
c:\ffmpeg-4.0.3\vs2017_build\include （视实际情况变化） 
1.5.3 增加库文件目录
c:\ffmpeg-4.0.3\vs2017_build\lib（视实际情况变化） 
1.5.4 增加库文件
依赖的库：libavcodec.a;libavdevice.a;libavfilter.a;libavformat.a;libavutil.a;libswresample.a;libswscale.a 
1.5.5 修改main.cpp如下
#include <stdio.h>
extern "C"
{
#include <libavformat/avformat.h>
#include <libavutil/dict.h>
}
int main(int argc, char * argv[]) {
avformat_network_init();
printf("hello ffmpeg!");
return 0;
}1.5.6 LNK2019 错误
-
如下图所示，这个是缺少依赖库造成的，
-
主要是缺少Bcrypt.lib;Ws2_32.lib;Secur32.lib这三个库
-
最后 ========== 生成: 成功 1 个，失败 0 个，最新 0 个，跳过 0 个 ==========
到这里生成完后，就可以用这个版本进行调试了，并可以断点进入。
2. 附录
2.1 ./configure --help
具体的编译选项，请视实际要求调整
Usage: configure [options]
Options: [defaults in brackets after descriptions]
Help options:
--help print this message
--quiet Suppress showing informative output
--list-decoders show all available decoders
--list-encoders show all available encoders
--list-hwaccels show all available hardware accelerators
--list-demuxers show all available demuxers
--list-muxers show all available muxers
--list-parsers show all available parsers
--list-protocols show all available protocols
--list-bsfs show all available bitstream filters
--list-indevs show all available input devices
--list-outdevs show all available output devices
--list-filters show all available filters
Standard options:
--logfile=FILE log tests and output to FILE [ffbuild/config.log]
--disable-logging do not log configure debug information
--fatal-warnings fail if any configure warning is generated
--prefix=PREFIX install in PREFIX [/usr/local]
--bindir=DIR install binaries in DIR [PREFIX/bin]
--datadir=DIR install data files in DIR [PREFIX/share/ffmpeg]
--docdir=DIR install documentation in DIR [PREFIX/share/doc/ffmpeg]
--libdir=DIR install libs in DIR [PREFIX/lib]
--shlibdir=DIR install shared libs in DIR [LIBDIR]
--incdir=DIR install includes in DIR [PREFIX/include]
--mandir=DIR install man page in DIR [PREFIX/share/man]
--pkgconfigdir=DIR install pkg-config files in DIR [LIBDIR/pkgconfig]
--enable-rpath use rpath to allow installing libraries in paths
not part of the dynamic linker search path
use rpath when linking programs (USE WITH CARE)
--install-name-dir=DIR Darwin directory name for installed targets
Licensing options:
--enable-gpl allow use of GPL code, the resulting libs
and binaries will be under GPL [no]
--enable-version3 upgrade (L)GPL to version 3 [no]
--enable-nonfree allow use of nonfree code, the resulting libs
and binaries will be unredistributable [no]
Configuration options:
--disable-static do not build static libraries [no]
--enable-shared build shared libraries [no]
--enable-small optimize for size instead of speed
--disable-runtime-cpudetect disable detecting CPU capabilities at runtime (smaller binary)
--enable-gray enable full grayscale support (slower color)
--disable-swscale-alpha disable alpha channel support in swscale
--disable-all disable building components, libraries and programs
--disable-autodetect disable automatically detected external libraries [no]
Program options:
--disable-programs do not build command line programs
--disable-ffmpeg disable ffmpeg build
--disable-ffplay disable ffplay build
--disable-ffprobe disable ffprobe build
Documentation options:
--disable-doc do not build documentation
--disable-htmlpages do not build HTML documentation pages
--disable-manpages do not build man documentation pages
--disable-podpages do not build POD documentation pages
--disable-txtpages do not build text documentation pages
Component options:
--disable-avdevice disable libavdevice build
--disable-avcodec disable libavcodec build
--disable-avformat disable libavformat build
--disable-swresample disable libswresample build
--disable-swscale disable libswscale build
--disable-postproc disable libpostproc build
--disable-avfilter disable libavfilter build
--enable-avresample enable libavresample build (deprecated) [no]
--disable-pthreads disable pthreads [autodetect]
--disable-w32threads disable Win32 threads [autodetect]
--disable-os2threads disable OS/2 threads [autodetect]
--disable-network disable network support [no]
--disable-dct disable DCT code
--disable-dwt disable DWT code
--disable-error-resilience disable error resilience code
--disable-lsp disable LSP code
--disable-lzo disable LZO decoder code
--disable-mdct disable MDCT code
--disable-rdft disable RDFT code
--disable-fft disable FFT code
--disable-faan disable floating point AAN (I)DCT code
--disable-pixelutils disable pixel utils in libavutil
Individual component options:
--disable-everything disable all components listed below
--disable-encoder=NAME disable encoder NAME
--enable-encoder=NAME enable encoder NAME
--disable-encoders disable all encoders
--disable-decoder=NAME disable decoder NAME
--enable-decoder=NAME enable decoder NAME
--disable-decoders disable all decoders
--disable-hwaccel=NAME disable hwaccel NAME
--enable-hwaccel=NAME enable hwaccel NAME
--disable-hwaccels disable all hwaccels
--disable-muxer=NAME disable muxer NAME
--enable-muxer=NAME enable muxer NAME
--disable-muxers disable all muxers
--disable-demuxer=NAME disable demuxer NAME
--enable-demuxer=NAME enable demuxer NAME
--disable-demuxers disable all demuxers
--enable-parser=NAME enable parser NAME
--disable-parser=NAME disable parser NAME
--disable-parsers disable all parsers
--enable-bsf=NAME enable bitstream filter NAME
--disable-bsf=NAME disable bitstream filter NAME
--disable-bsfs disable all bitstream filters
--enable-protocol=NAME enable protocol NAME
--disable-protocol=NAME disable protocol NAME
--disable-protocols disable all protocols
--enable-indev=NAME enable input device NAME
--disable-indev=NAME disable input device NAME
--disable-indevs disable input devices
--enable-outdev=NAME enable output device NAME
--disable-outdev=NAME disable output device NAME
--disable-outdevs disable output devices
--disable-devices disable all devices
--enable-filter=NAME enable filter NAME
--disable-filter=NAME disable filter NAME
--disable-filters disable all filters
External library support:
Using any of the following switches will allow FFmpeg to link to the
corresponding external library. All the components depending on that library
will become enabled, if all their other dependencies are met and they are not
explicitly disabled. E.g. --enable-libwavpack will enable linking to
libwavpack and allow the libwavpack encoder to be built, unless it is
specifically disabled with --disable-encoder=libwavpack.
Note that only the system libraries are auto-detected. All the other external
libraries must be explicitly enabled.
Also note that the following help text describes the purpose of the libraries
themselves, not all their features will necessarily be usable by FFmpeg.
--disable-alsa disable ALSA support [autodetect]
--disable-appkit disable Apple AppKit framework [autodetect]
--disable-avfoundation disable Apple AVFoundation framework [autodetect]
--enable-avisynth enable reading of AviSynth script files [no]
--disable-bzlib disable bzlib [autodetect]
--disable-coreimage disable Apple CoreImage framework [autodetect]
--enable-chromaprint enable audio fingerprinting with chromaprint [no]
--enable-frei0r enable frei0r video filtering [no]
--enable-gcrypt enable gcrypt, needed for rtmp(t)e support
if openssl, librtmp or gmp is not used [no]
--enable-gmp enable gmp, needed for rtmp(t)e support
if openssl or librtmp is not used [no]
--enable-gnutls enable gnutls, needed for https support
if openssl or libtls is not used [no]
--disable-iconv disable iconv [autodetect]
--enable-jni enable JNI support [no]
--enable-ladspa enable LADSPA audio filtering [no]
--enable-libaom enable AV1 video encoding/decoding via libaom [no]
--enable-libass enable libass subtitles rendering,
needed for subtitles and ass filter [no]
--enable-libbluray enable BluRay reading using libbluray [no]
--enable-libbs2b enable bs2b DSP library [no]
--enable-libcaca enable textual display using libcaca [no]
--enable-libcelt enable CELT decoding via libcelt [no]
--enable-libcdio enable audio CD grabbing with libcdio [no]
--enable-libcodec2 enable codec2 en/decoding using libcodec2 [no]
--enable-libdc1394 enable IIDC-1394 grabbing using libdc1394
and libraw1394 [no]
--enable-libfdk-aac enable AAC de/encoding via libfdk-aac [no]
--enable-libflite enable flite (voice synthesis) support via libflite [no]
--enable-libfontconfig enable libfontconfig, useful for drawtext filter [no]
--enable-libfreetype enable libfreetype, needed for drawtext filter [no]
--enable-libfribidi enable libfribidi, improves drawtext filter [no]
--enable-libgme enable Game Music Emu via libgme [no]
--enable-libgsm enable GSM de/encoding via libgsm [no]
--enable-libiec61883 enable iec61883 via libiec61883 [no]
--enable-libilbc enable iLBC de/encoding via libilbc [no]
--enable-libjack enable JACK audio sound server [no]
--enable-libkvazaar enable HEVC encoding via libkvazaar [no]
--enable-libmodplug enable ModPlug via libmodplug [no]
--enable-libmp3lame enable MP3 encoding via libmp3lame [no]
--enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
--enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
--enable-libopencv enable video filtering via libopencv [no]
--enable-libopenh264 enable H.264 encoding via OpenH264 [no]
--enable-libopenjpeg enable JPEG 2000 de/encoding via OpenJPEG [no]
--enable-libopenmpt enable decoding tracked files via libopenmpt [no]
--enable-libopus enable Opus de/encoding via libopus [no]
--enable-libpulse enable Pulseaudio input via libpulse [no]
--enable-librsvg enable SVG rasterization via librsvg [no]
--enable-librubberband enable rubberband needed for rubberband filter [no]
--enable-librtmp enable RTMP[E] support via librtmp [no]
--enable-libshine enable fixed-point MP3 encoding via libshine [no]
--enable-libsmbclient enable Samba protocol via libsmbclient [no]
--enable-libsnappy enable Snappy compression, needed for hap encoding [no]
--enable-libsoxr enable Include libsoxr resampling [no]
--enable-libspeex enable Speex de/encoding via libspeex [no]
--enable-libsrt enable Haivision SRT protocol via libsrt [no]
--enable-libssh enable SFTP protocol via libssh [no]
--enable-libtesseract enable Tesseract, needed for ocr filter [no]
--enable-libtheora enable Theora encoding via libtheora [no]
--enable-libtls enable LibreSSL (via libtls), needed for https support
if openssl or gnutls is not used [no]
--enable-libtwolame enable MP2 encoding via libtwolame [no]
--enable-libv4l2 enable libv4l2/v4l-utils [no]
--enable-libvidstab enable video stabilization using vid.stab [no]
--enable-libvmaf enable vmaf filter via libvmaf [no]
--enable-libvo-amrwbenc enable AMR-WB encoding via libvo-amrwbenc [no]
--enable-libvorbis enable Vorbis en/decoding via libvorbis,
native implementation exists [no]
--enable-libvpx enable VP8 and VP9 de/encoding via libvpx [no]
--enable-libwavpack enable wavpack encoding via libwavpack [no]
--enable-libwebp enable WebP encoding via libwebp [no]
--enable-libx264 enable H.264 encoding via x264 [no]
--enable-libx265 enable HEVC encoding via x265 [no]
--enable-libxavs enable AVS encoding via xavs [no]
--enable-libxcb enable X11 grabbing using XCB [autodetect]
--enable-libxcb-shm enable X11 grabbing shm communication [autodetect]
--enable-libxcb-xfixes enable X11 grabbing mouse rendering [autodetect]
--enable-libxcb-shape enable X11 grabbing shape rendering [autodetect]
--enable-libxvid enable Xvid encoding via xvidcore,
native MPEG-4/Xvid encoder exists [no]
--enable-libxml2 enable XML parsing using the C library libxml2 [no]
--enable-libzimg enable z.lib, needed for zscale filter [no]
--enable-libzmq enable message passing via libzmq [no]
--enable-libzvbi enable teletext support via libzvbi [no]
--enable-lv2 enable LV2 audio filtering [no]
--disable-lzma disable lzma [autodetect]
--enable-decklink enable Blackmagic DeckLink I/O support [no]
--enable-libndi_newtek enable Newteck NDI I/O support [no]
--enable-mediacodec enable Android MediaCodec support [no]
--enable-libmysofa enable libmysofa, needed for sofalizer filter [no]
--enable-openal enable OpenAL 1.1 capture support [no]
--enable-opencl enable OpenCL processing [no]
--enable-opengl enable OpenGL rendering [no]
--enable-openssl enable openssl, needed for https support
if gnutls or libtls is not used [no]
--disable-sndio disable sndio support [autodetect]
--disable-schannel disable SChannel SSP, needed for TLS support on
Windows if openssl and gnutls are not used [autodetect]
--disable-sdl2 disable sdl2 [autodetect]
--disable-securetransport disable Secure Transport, needed for TLS support
on OSX if openssl and gnutls are not used [autodetect]
--disable-xlib disable xlib [autodetect]
--disable-zlib disable zlib [autodetect]
The following libraries provide various hardware acceleration features:
--disable-amf disable AMF video encoding code [autodetect]
--disable-audiotoolbox disable Apple AudioToolbox code [autodetect]
--enable-cuda-sdk enable CUDA features that require the CUDA SDK [no]
--disable-cuvid disable Nvidia CUVID support [autodetect]
--disable-d3d11va disable Microsoft Direct3D 11 video acceleration code [autodetect]
--disable-dxva2 disable Microsoft DirectX 9 video acceleration code [autodetect]
--disable-ffnvcodec disable dynamically linked Nvidia code [autodetect]
--enable-libdrm enable DRM code (Linux) [no]
--enable-libmfx enable Intel MediaSDK (AKA Quick Sync Video) code via libmfx [no]
--enable-libnpp enable Nvidia Performance Primitives-based code [no]
--enable-mmal enable Broadcom Multi-Media Abstraction Layer (Raspberry Pi) via MMAL [no]
--disable-nvdec disable Nvidia video decoding acceleration (via hwaccel) [autodetect]
--disable-nvenc disable Nvidia video encoding code [autodetect]
--enable-omx enable OpenMAX IL code [no]
--enable-omx-rpi enable OpenMAX IL code for Raspberry Pi [no]
--enable-rkmpp enable Rockchip Media Process Platform code [no]
--disable-v4l2-m2m disable V4L2 mem2mem code [autodetect]
--disable-vaapi disable Video Acceleration API (mainly Unix/Intel) code [autodetect]
--disable-vdpau disable Nvidia Video Decode and Presentation API for Unix code [autodetect]
--disable-videotoolbox disable VideoToolbox code [autodetect]
Toolchain options:
--arch=ARCH select architecture []
--cpu=CPU select the minimum required CPU (affects
instruction selection, may crash on older CPUs)
--cross-prefix=PREFIX use PREFIX for compilation tools []
--progs-suffix=SUFFIX program name suffix []
--enable-cross-compile assume a cross-compiler is used
--sysroot=PATH root of cross-build tree
--sysinclude=PATH location of cross-build system headers
--target-os=OS compiler targets OS []
--target-exec=CMD command to run executables on target
--target-path=DIR path to view of build directory on target
--target-samples=DIR path to samples directory on target
--tempprefix=PATH force fixed dir/prefix instead of mktemp for checks
--toolchain=NAME set tool defaults according to NAME
(gcc-asan, clang-asan, gcc-msan, clang-msan,
gcc-tsan, clang-tsan, gcc-usan, clang-usan,
valgrind-massif, valgrind-memcheck,
msvc, icl, gcov, llvm-cov, hardened)
--nm=NM use nm tool NM [nm -g]
--ar=AR use archive tool AR [ar]
--as=AS use assembler AS []
--ln_s=LN_S use symbolic link tool LN_S [ln -s -f]
--strip=STRIP use strip tool STRIP [strip]
--windres=WINDRES use windows resource compiler WINDRES [windres]
--x86asmexe=EXE use nasm-compatible assembler EXE [nasm]
--cc=CC use C compiler CC [gcc]
--cxx=CXX use C compiler CXX [g++]
--objcc=OCC use ObjC compiler OCC [gcc]
--dep-cc=DEPCC use dependency generator DEPCC [gcc]
--nvcc=NVCC use Nvidia CUDA compiler NVCC [nvcc]
--ld=LD use linker LD []
--pkg-config=PKGCONFIG use pkg-config tool PKGCONFIG [pkg-config]
--pkg-config-flags=FLAGS pass additional flags to pkgconf []
--ranlib=RANLIB use ranlib RANLIB [ranlib]
--doxygen=DOXYGEN use DOXYGEN to generate API doc [doxygen]
--host-cc=HOSTCC use host C compiler HOSTCC
--host-cflags=HCFLAGS use HCFLAGS when compiling for host
--host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
--host-ld=HOSTLD use host linker HOSTLD
--host-ldflags=HLDFLAGS use HLDFLAGS when linking for host
--host-libs=HLIBS use libs HLIBS when linking for host
--host-os=OS compiler host OS []
--extra-cflags=ECFLAGS add ECFLAGS to CFLAGS []
--extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS []
--extra-objcflags=FLAGS add FLAGS to OBJCFLAGS []
--extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS []
--extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS []
--extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS []
--extra-libs=ELIBS add ELIBS []
--extra-version=STRING version string suffix []
--optflags=OPTFLAGS override optimization-related compiler flags
--nvccflags=NVCCFLAGS override nvcc flags [-gencode arch=compute_30,code=sm_30 -O2]
--build-suffix=SUFFIX library name suffix []
--enable-pic build position-independent code
--enable-thumb compile for Thumb instruction set
--enable-lto use link-time optimization
--env="ENV=override" override the environment variables
Advanced options (experts only):
--malloc-prefix=PREFIX prefix malloc and related names with PREFIX
--custom-allocator=NAME use a supported custom allocator
--disable-symver disable symbol versioning
--enable-hardcoded-tables use hardcoded tables instead of runtime generation
--disable-safe-bitstream-reader
disable buffer boundary checking in bitreaders
(faster, but may crash)
--sws-max-filter-size=N the max filter size swscale uses [256]
Optimization options (experts only):
--disable-asm disable all assembly optimizations
--disable-altivec disable AltiVec optimizations
--disable-vsx disable VSX optimizations
--disable-power8 disable POWER8 optimizations
--disable-amd3dnow disable 3DNow! optimizations
--disable-amd3dnowext disable 3DNow! extended optimizations
--disable-mmx disable MMX optimizations
--disable-mmxext disable MMXEXT optimizations
--disable-sse disable SSE optimizations
--disable-sse2 disable SSE2 optimizations
--disable-sse3 disable SSE3 optimizations
--disable-ssse3 disable SSSE3 optimizations
--disable-sse4 disable SSE4 optimizations
--disable-sse42 disable SSE4.2 optimizations
--disable-avx disable AVX optimizations
--disable-xop disable XOP optimizations
--disable-fma3 disable FMA3 optimizations
--disable-fma4 disable FMA4 optimizations
--disable-avx2 disable AVX2 optimizations
--disable-avx512 disable AVX-512 optimizations
--disable-aesni disable AESNI optimizations
--disable-armv5te disable armv5te optimizations
--disable-armv6 disable armv6 optimizations
--disable-armv6t2 disable armv6t2 optimizations
--disable-vfp disable VFP optimizations
--disable-neon disable NEON optimizations
--disable-inline-asm disable use of inline assembly
--disable-x86asm disable use of standalone x86 assembly
--disable-mipsdsp disable MIPS DSP ASE R1 optimizations
--disable-mipsdspr2 disable MIPS DSP ASE R2 optimizations
--disable-msa disable MSA optimizations
--disable-mipsfpu disable floating point MIPS optimizations
--disable-mmi disable Loongson SIMD optimizations
--disable-fast-unaligned consider unaligned accesses slow
Developer options (useful when working on FFmpeg itself):
--disable-debug disable debugging symbols
--enable-debug=LEVEL set the debug level []
--disable-optimizations disable compiler optimizations
--enable-extra-warnings enable more compiler warnings
--disable-stripping disable stripping of executables and shared libraries
--assert-level=level 0(default), 1 or 2, amount of assertion testing,
2 causes a slowdown at runtime.
--enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
--valgrind=VALGRIND run "make fate" tests through valgrind to detect memory
leaks and errors, using the specified valgrind binary.
Cannot be combined with --target-exec
--enable-ftrapv Trap arithmetic overflows
--samples=PATH location of test samples for FATE, if not set use
$FATE_SAMPLES at make invocation time.
--enable-neon-clobber-test check NEON registers for clobbering (should be
used only for debugging purposes)
--enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
should be used only for debugging purposes)
--enable-random randomly enable/disable components
--disable-random
--enable-random=LIST randomly enable/disable specific components or
--disable-random=LIST component groups. LIST is a comma-separated list
of NAME[:PROB] entries where NAME is a component
(group) and PROB the probability associated with
NAME (default 0.5).
--random-seed=VALUE seed value for --enable/disable-random
--disable-valgrind-backtrace do not print a backtrace under Valgrind
(only applies to --disable-optimizations builds)
--enable-osfuzz Enable building fuzzer tool
--libfuzzer=PATH path to libfuzzer
--ignore-tests=TESTS comma-separated list (without "fate-" prefix
in the name) of tests whose result is ignored
--enable-linux-perf enable Linux Performance Monitor API
NOTE: Object files are built at the place where configure is launched.
2.2 visual studio 已经编译好的版本
在https://ffmpeg.zeranoe.com/builds/提供了windows下面所有已经编译好的库,每个发布版本都有，有需要，可以自行下载。
- windows 32位版本 https://ffmpeg.zeranoe.com/builds/win32/
- windows 64位版本 https://ffmpeg.zeranoe.com/builds/win64/
2.3 FFMpeg 4.0的特性
更多特性说明：https://ffmpeg.org/index.html#news
April 20th, 2018, FFmpeg 4.0 "Wu" FFmpeg 4.0 "Wu", a new major release, is now available! Some of the highlights:
- Bitstream filters for editing metadata in H.264, HEVC and MPEG-2 streams
- Experimental MagicYUV encoder
- TiVo ty/ty+ demuxer
- Intel QSV-accelerated MJPEG encoding
- native aptX and aptX HD encoder and decoder
- NVIDIA NVDEC-accelerated H.264, HEVC, MJPEG, MPEG-1/2/4, VC1, VP8/9 hwaccel decoding
- Intel QSV-accelerated overlay filter
- mcompand audio filter
- acontrast audio filter
- OpenCL overlay filter
- video mix filter
- video normalize filter
- audio lv2 wrapper filter
- VAAPI MJPEG and VP8 decoding
- AMD AMF H.264 and HEVC encoders
- video fillborders filter
- video setrange filter
- support LibreSSL (via libtls)
- Dropped support for building for Windows XP. The minimum supported Windows version is Windows Vista.
- deconvolve video filter
- entropy video filter
- hilbert audio filter source
- aiir audio filter
- Removed the ffserver program
- Removed the ffmenc and ffmdec muxer and demuxer
- VideoToolbox HEVC encoder and hwaccel
- VAAPI-accelerated ProcAmp (color balance), denoise and sharpness filters
- Add android_camera indev
- codec2 en/decoding via libcodec2
- native SBC encoder and decoder
- drmeter audio filter
- hapqa_extract bitstream filter
- filter_units bitstream filter
- AV1 Support through libaom
- E-AC-3 dependent frames support
- bitstream filter for extracting E-AC-3 core
- Haivision SRT protocol via libsrt
- vfrdet filter
- We strongly recommend users, distributors, and system integrators to upgrade unless they use current git master.