官方介绍
FFmpeg是一个领先的多媒体框架，能够解码、编码、转码、复用、解复用、流媒体传输、过滤和播放几乎所有由人类和机器创造的内容。它支持最不为人知的古老格式，直到最前沿的格式。无论这些格式是由一些标准委员会、社区还是公司设计的，FFmpeg都能处理。
此外，FFmpeg也具有高度的可移植性。它在Linux、Mac OS X、Microsoft Windows、BSDs、Solaris等各种操作系统上，以及各种构建环境、机器架构和配置下，都能成功编译、运行并通过我们的测试基础设施FATE。
FFmpeg的强大功能和灵活性使它成为处理多媒体内容的理想工具，无论是在个人电脑上还是在大型服务器上。它的广泛应用和强大的社区支持意味着你可以找到解决几乎任何问题的资源和帮助。
下载最新的源码包
![图片[1]-嵌入式平台交叉编译FFmpeg 6.1.1 动态库 实现rtsp解码-天煜博客](https://blog.itianyu.cn/wp-content/uploads/2024/01/image-1024x598.png)
前往官网下载最新的源码包并上传到Ubuntu编译机器上，。默认情况下，点击”Download Source Code”按钮会下载tar.xz格式的压缩包。为了获取更多版本选择，我点击了按钮下方的”More releases”。在这里不仅有不同版本号的源码包可供下载，还有不同的压缩方式可供选择，最终我选择了gzip格式的最新版本FFmpeg 6.1.1进行下载。
![图片[2]-嵌入式平台交叉编译FFmpeg 6.1.1 动态库 实现rtsp解码-天煜博客](https://blog.itianyu.cn/wp-content/uploads/2024/01/image-1-1024x489.png)
编译前的配置
使用tar解压后可以看到源码包里的目录
#查看configure的帮助 配置编译选项 ./configure –help
├── Changelog # 记录项目的更新和变更历史
├── compat # 兼容性相关的代码
├── configure # 用于配置项目的脚本
├── CONTRIBUTING.md # 贡献指南，说明如何参与项目的贡献
├── COPYING.GPLv2 # GPLv2 版本的软件许可证
├── COPYING.GPLv3 # GPLv3 版本的软件许可证
├── COPYING.LGPLv2.1 # LGPLv2.1 版本的软件许可证
├── COPYING.LGPLv3 # LGPLv3 版本的软件许可证
├── CREDITS # 致谢，列出项目的贡献者
├── doc # 文档相关的目录
├── ffbuild # 用于构建的脚本和配置
├── fftools # 各种工具的源代码
├── INSTALL.md # 安装说明
├── libavcodec # 音视频编解码库的源代码
├── libavdevice # 外部设备支持库的源代码
├── libavfilter # 音视频过滤器库的源代码
├── libavformat # 音视频封装格式处理库的源代码
├── libavutil # 包含各种工具函数的库的源代码
├── libpostproc # 后处理库的源代码
├── libswresample # 音频采样格式转换库的源代码
├── libswscale # 视频图像格式转换库的源代码
├── LICENSE.md # 项目的许可证信息
├── MAINTAINERS # 维护者列表，指定项目的维护人员
├── Makefile # 项目的主要 Makefile
├── presets # 预设配置文件的目录
├── README.md # 项目的主页和简要说明
├── RELEASE # 发布相关的信息
├── RELEASE_NOTES # 发布说明，记录每个版本的变更
├── tests # 测试相关的代码和数据
├── tools # 各种辅助工具的源代码
└── VERSION # 项目的版本号信息
#configure的完整配置
./configure --help
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
--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-dwt disable DWT code
--disable-error-resilience disable error resilience code
--disable-lsp disable LSP 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-libopus will enable linking to
libopus and allow the libopus encoder to be built, unless it is
specifically disabled with --disable-encoder=libopus.
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, libtls or mbedtls is not used [no]
--disable-iconv disable iconv [autodetect]
--enable-jni enable JNI support [no]
--enable-ladspa enable LADSPA audio filtering [no]
--enable-lcms2 enable ICC profile support via LittleCMS 2 [no]
--enable-libaom enable AV1 video encoding/decoding via libaom [no]
--enable-libaribb24 enable ARIB text and caption decoding via libaribb24 [no]
--enable-libaribcaption enable ARIB text and caption decoding via libaribcaption [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-libdav1d enable AV1 decoding via libdav1d [no]
--enable-libdavs2 enable AVS2 decoding via libdavs2 [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-libharfbuzz enable libharfbuzz, needed for drawtext filter [no]
--enable-libglslang enable GLSL->SPIRV compilation via libglslang [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-libjxl enable JPEG XL de/encoding via libjxl [no]
--enable-libklvanc enable Kernel Labs VANC processing [no]
--enable-libkvazaar enable HEVC encoding via libkvazaar [no]
--enable-liblensfun enable lensfun lens correction [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-libopenvino enable OpenVINO as a DNN module backend
for DNN based filters like dnn_processing [no]
--enable-libopus enable Opus de/encoding via libopus [no]
--enable-libplacebo enable libplacebo library [no]
--enable-libpulse enable Pulseaudio input via libpulse [no]
--enable-librabbitmq enable RabbitMQ library [no]
--enable-librav1e enable AV1 encoding via rav1e [no]
--enable-librist enable RIST via librist [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-libshaderc enable GLSL->SPIRV compilation via libshaderc [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-libsvtav1 enable AV1 encoding via SVT [no]
--enable-libtensorflow enable TensorFlow as a DNN module backend
for DNN based filters like sr [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, gnutls or mbedtls is not used [no]
--enable-libtwolame enable MP2 encoding via libtwolame [no]
--enable-libuavs3d enable AVS3 decoding via libuavs3d [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-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-libxavs2 enable AVS2 encoding via xavs2 [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, needed
for dash and imf demuxing support [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-mbedtls enable mbedTLS, needed for https support
if openssl, gnutls or libtls is not used [no]
--enable-mediacodec enable Android MediaCodec support [no]
--enable-mediafoundation enable encoding via MediaFoundation [auto]
--disable-metal disable Apple Metal framework [autodetect]
--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, libtls or mbedtls is not used [no]
--enable-pocketsphinx enable PocketSphinx, needed for asr filter [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]
--enable-vapoursynth enable VapourSynth demuxer [no]
--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-nvcc enable Nvidia CUDA compiler [no]
--disable-cuda-llvm disable CUDA compilation using clang [autodetect]
--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-libvpl enable Intel oneVPL code via libvpl if libmfx is not used [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]
--disable-vulkan disable Vulkan 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 or clang []
--ld=LD use linker LD []
--metalcc=METALCC use metal compiler METALCC [xcrun -sdk macosx metal]
--metallib=METALLIB use metal linker METALLIB [xcrun -sdk macosx metallib]
--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-extralibs=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 []
--build-suffix=SUFFIX library name suffix []
--enable-pic build position-independent code
--enable-thumb compile for Thumb instruction set
--enable-lto[=arg] 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-avx512icl disable AVX-512ICL 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-dotprod disable DOTPROD optimizations
--disable-i8mm disable I8MM 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 MMI optimizations
--disable-lsx disable Loongson LSX optimizations
--disable-lasx disable Loongson LASX optimizations
--disable-rvv disable RISC-V Vector 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-ossfuzz 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
--enable-macos-kperf enable macOS kperf (private) API
--disable-large-tests disable tests that use a large amount of memory
--disable-ptx-compression don't compress CUDA PTX code even when possible
NOTE: Object files are built at the place where configure is launched.交叉编译选项
我的编译目标：
- 交叉编译到Arm Linux上运行
- 编译成so动态库 供C语言调用
- 实现RTSP解码
参考configure –help内容可以得出来configure的命令
#配置命令
./configure --prefix=/home/user/work/ffmpeg-6.1.1/install --disable-programs --disable-static --enable-shared --enable-cross-compile --cross-prefix=arm-linux-gnueabihf- --target-os=linux --arch=arm
#命令解析
--prefix=/home/user/work/ffmpeg-6.1.1/install：指定安装目录，即生成的可执行文件和库文件将安装到该目录下。
--disable-programs：禁用编译 FFmpeg 自带的一些程序，这些程序一般用于演示和测试。
--disable-static：禁用静态库的生成，只生成共享库（动态链接库）。
--enable-shared：启用共享库的生成，即生成动态链接库。
--enable-cross-compile：启用交叉编译支持，表示将在非本机平台上进行编译。
--cross-prefix=arm-linux-gnueabihf-：指定交叉编译工具链的前缀，用于生成适用于 ARM 架构的二进制文件。
--target-os=linux：指定目标操作系统为 Linux。
--arch=arm：指定目标架构为 ARM。
这些选项的组合说明了你正在配置 FFmpeg 以在 ARM 架构的 Linux 系统上进行交叉编译。生成的二进制文件和库将会安装到指定的目录 /home/user/work/ffmpeg-6.1.1/install 中。
# 2024.06.13补充
在交叉编译RK3588平台的时候报了一些错误 类似下面这样：
/tmp/ccag2k7f.s: Assembler messages:
/tmp/ccag2k7f.s:1771: Error: unknown mnemonic `itt' -- `itt gt'
/tmp/ccag2k7f.s:1772: Error: unknown mnemonic `movgt' -- `movgt x10,x1'
/tmp/ccag2k7f.s:1773: Error: unknown mnemonic `movgt' -- `movgt x1,x2'
/tmp/ccag2k7f.s:1775: Error: unknown mnemonic `it' -- `it le'
/tmp/ccag2k7f.s:1776: Error: unknown mnemonic `movle' -- `movle x1,x3'
/tmp/ccag2k7f.s:1778: Error: unknown mnemonic `it' -- `it gt'
/tmp/ccag2k7f.s:1779: Error: unknown mnemonic `movgt' -- `movgt x10,x1'
/tmp/ccag2k7f.s:1797: Error: unknown mnemonic `itt' -- `itt gt'
可以通过配置--disable-asm选项解决编译与安装
#编译与安装
make -j16 && make install
#编译完成后 会将文件存放在prefix目录下
install
├── include
│ ├── libavcodec
│ │ ├── ac3_parser.h
│ │ ├── adts_parser.h
│ │ ├── avcodec.h
│ │ ├── avdct.h
│ │ ├── avfft.h
│ │ ├── bsf.h
│ │ ├── codec_desc.h
│ │ ├── codec.h
│ │ ├── codec_id.h
│ │ ├── codec_par.h
│ │ ├── d3d11va.h
│ │ ├── defs.h
│ │ ├── dirac.h
│ │ ├── dv_profile.h
│ │ ├── dxva2.h
│ │ ├── jni.h
│ │ ├── mediacodec.h
│ │ ├── packet.h
│ │ ├── qsv.h
│ │ ├── vdpau.h
│ │ ├── version.h
│ │ ├── version_major.h
│ │ ├── videotoolbox.h
│ │ ├── vorbis_parser.h
│ │ └── xvmc.h
│ ├── libavdevice
│ │ ├── avdevice.h
│ │ ├── version.h
│ │ └── version_major.h
│ ├── libavfilter
│ │ ├── avfilter.h
│ │ ├── buffersink.h
│ │ ├── buffersrc.h
│ │ ├── version.h
│ │ └── version_major.h
│ ├── libavformat
│ │ ├── avformat.h
│ │ ├── avio.h
│ │ ├── version.h
│ │ └── version_major.h
│ ├── libavutil
│ │ ├── adler32.h
│ │ ├── aes_ctr.h
│ │ ├── aes.h
│ │ ├── ambient_viewing_environment.h
│ │ ├── attributes.h
│ │ ├── audio_fifo.h
│ │ ├── avassert.h
│ │ ├── avconfig.h
│ │ ├── avstring.h
│ │ ├── avutil.h
│ │ ├── base64.h
│ │ ├── blowfish.h
│ │ ├── bprint.h
│ │ ├── bswap.h
│ │ ├── buffer.h
│ │ ├── camellia.h
│ │ ├── cast5.h
│ │ ├── channel_layout.h
│ │ ├── common.h
│ │ ├── cpu.h
│ │ ├── crc.h
│ │ ├── csp.h
│ │ ├── des.h
│ │ ├── detection_bbox.h
│ │ ├── dict.h
│ │ ├── display.h
│ │ ├── dovi_meta.h
│ │ ├── downmix_info.h
│ │ ├── encryption_info.h
│ │ ├── error.h
│ │ ├── eval.h
│ │ ├── executor.h
│ │ ├── ffversion.h
│ │ ├── fifo.h
│ │ ├── file.h
│ │ ├── film_grain_params.h
│ │ ├── frame.h
│ │ ├── hash.h
│ │ ├── hdr_dynamic_metadata.h
│ │ ├── hdr_dynamic_vivid_metadata.h
│ │ ├── hmac.h
│ │ ├── hwcontext_cuda.h
│ │ ├── hwcontext_d3d11va.h
│ │ ├── hwcontext_drm.h
│ │ ├── hwcontext_dxva2.h
│ │ ├── hwcontext.h
│ │ ├── hwcontext_mediacodec.h
│ │ ├── hwcontext_opencl.h
│ │ ├── hwcontext_qsv.h
│ │ ├── hwcontext_vaapi.h
│ │ ├── hwcontext_vdpau.h
│ │ ├── hwcontext_videotoolbox.h
│ │ ├── hwcontext_vulkan.h
│ │ ├── imgutils.h
│ │ ├── intfloat.h
│ │ ├── intreadwrite.h
│ │ ├── lfg.h
│ │ ├── log.h
│ │ ├── lzo.h
│ │ ├── macros.h
│ │ ├── mastering_display_metadata.h
│ │ ├── mathematics.h
│ │ ├── md5.h
│ │ ├── mem.h
│ │ ├── motion_vector.h
│ │ ├── murmur3.h
│ │ ├── opt.h
│ │ ├── parseutils.h
│ │ ├── pixdesc.h
│ │ ├── pixelutils.h
│ │ ├── pixfmt.h
│ │ ├── random_seed.h
│ │ ├── rational.h
│ │ ├── rc4.h
│ │ ├── replaygain.h
│ │ ├── ripemd.h
│ │ ├── samplefmt.h
│ │ ├── sha512.h
│ │ ├── sha.h
│ │ ├── spherical.h
│ │ ├── stereo3d.h
│ │ ├── tea.h
│ │ ├── threadmessage.h
│ │ ├── timecode.h
│ │ ├── time.h
│ │ ├── timestamp.h
│ │ ├── tree.h
│ │ ├── twofish.h
│ │ ├── tx.h
│ │ ├── uuid.h
│ │ ├── version.h
│ │ ├── video_enc_params.h
│ │ ├── video_hint.h
│ │ └── xtea.h
│ ├── libswresample
│ │ ├── swresample.h
│ │ ├── version.h
│ │ └── version_major.h
│ └── libswscale
│ ├── swscale.h
│ ├── version.h
│ └── version_major.h
├── lib
│ ├── libavcodec.so -> libavcodec.so.60.31.102
│ ├── libavcodec.so.60 -> libavcodec.so.60.31.102
│ ├── libavcodec.so.60.31.102
│ ├── libavdevice.so -> libavdevice.so.60.3.100
│ ├── libavdevice.so.60 -> libavdevice.so.60.3.100
│ ├── libavdevice.so.60.3.100
│ ├── libavfilter.so -> libavfilter.so.9.12.100
│ ├── libavfilter.so.9 -> libavfilter.so.9.12.100
│ ├── libavfilter.so.9.12.100
│ ├── libavformat.so -> libavformat.so.60.16.100
│ ├── libavformat.so.60 -> libavformat.so.60.16.100
│ ├── libavformat.so.60.16.100
│ ├── libavutil.so -> libavutil.so.58.29.100
│ ├── libavutil.so.58 -> libavutil.so.58.29.100
│ ├── libavutil.so.58.29.100
│ ├── libswresample.so -> libswresample.so.4.12.100
│ ├── libswresample.so.4 -> libswresample.so.4.12.100
│ ├── libswresample.so.4.12.100
│ ├── libswscale.so -> libswscale.so.7.5.100
│ ├── libswscale.so.7 -> libswscale.so.7.5.100
│ ├── libswscale.so.7.5.100
│ └── pkgconfig
│ ├── libavcodec.pc
│ ├── libavdevice.pc
│ ├── libavfilter.pc
│ ├── libavformat.pc
│ ├── libavutil.pc
│ ├── libswresample.pc
│ └── libswscale.pc
└── share
└── ffmpeg
└── examples
├── avio_http_serve_files.c
├── avio_list_dir.c
├── avio_read_callback.c
├── decode_audio.c
├── decode_filter_audio.c
├── decode_filter_video.c
├── decode_video.c
├── demux_decode.c
├── encode_audio.c
├── encode_video.c
├── extract_mvs.c
├── filter_audio.c
├── hw_decode.c
├── Makefile
├── mux.c
├── qsv_decode.c
├── qsv_transcode.c
├── README
├── remux.c
├── resample_audio.c
├── scale_video.c
├── show_metadata.c
├── transcode_aac.c
├── transcode.c
├── vaapi_encode.c
└── vaapi_transcode.c
13 directories, 191 filesRTSP拉流demo 发送给海思的Vdec模块进行解码
#include <libavformat/avformat.h>
HI_VOID *SAMPLE_COMM_VDEC_SendStreamFFmpeg(HI_VOID *pArgs)
{
VDEC_THREAD_PARAM_S *pstVdecThreadParam = (VDEC_THREAD_PARAM_S *)pArgs;
VDEC_STREAM_S stStream;
HI_U64 u64PTS = 0;
HI_S32 s32Ret;
// FFmpeg 打开文件
AVFormatContext *fmt_ctx = NULL;
int video_stream_index = -1;
AVDictionary *avdic=NULL;
AVPacket *packet = av_packet_alloc();
if (!packet)
{
fprintf(stderr, "Could not allocate packet\n");
log_e("Could not allocate packet");
goto end;
}
av_dict_set(&avdic, "rtsp_transport", "tcp", 0);
av_dict_set(&avdic, "max_delay", "500000", 0);
av_dict_set(&avdic, "stimeout", "1000000", 0);
av_dict_set(&avdic, "buffer_size", "10240000", 0);
// Open input file
s32Ret = avformat_open_input(&fmt_ctx, pstVdecThreadParam->cUrl, NULL, &avdic);
if (s32Ret < 0)
{
fprintf(stderr, "Cannot open input file: %s\n", av_err2str(s32Ret));
log_e("Cannot open input file: %s", av_err2str(s32Ret));
goto end;
}
// Retrieve stream information
s32Ret = avformat_find_stream_info(fmt_ctx, NULL);
if (s32Ret < 0)
{
fprintf(stderr, "Cannot find stream information: %s\n", av_err2str(s32Ret));
log_e("Cannot find stream information: %s", av_err2str(s32Ret));
goto end;
}
// Find the video stream
s32Ret = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
if (s32Ret < 0)
{
fprintf(stderr, "Cannot find a video stream in the input file: %s\n", av_err2str(s32Ret));
log_e("Cannot find a video stream in the input file: %s", av_err2str(s32Ret));
goto end;
}
video_stream_index = s32Ret;
prctl(PR_SET_NAME, "VideoSendStreamFFmpeg", 0, 0, 0);
u64PTS = pstVdecThreadParam->u64PtsInit;
while (1)
{
if (pstVdecThreadParam->eThreadCtrl == THREAD_CTRL_STOP)
{
break;
}
else if (pstVdecThreadParam->eThreadCtrl == THREAD_CTRL_PAUSE)
{
sleep(1);
continue;
}
s32Ret = av_read_frame(fmt_ctx, packet);
if (s32Ret < 0)
break;
if (packet->stream_index == video_stream_index)
{
// log_d("pts:%ld size:%d\n", packet->pts, packet->size);
stStream.u64PTS = u64PTS;
stStream.pu8Addr = packet->data;
stStream.u32Len = packet->size;
stStream.bEndOfStream = HI_FALSE;
stStream.bEndOfFrame = HI_TRUE;
stStream.bDisplay = 1;
SendAgain:
s32Ret = HI_MPI_VDEC_SendStream(pstVdecThreadParam->s32ChnId, &stStream, pstVdecThreadParam->s32MilliSec);
if ((HI_SUCCESS != s32Ret) && (THREAD_CTRL_START == pstVdecThreadParam->eThreadCtrl))
{
usleep(pstVdecThreadParam->s32IntervalTime);
goto SendAgain;
}
u64PTS += pstVdecThreadParam->u64PtsIncrease;
av_packet_unref(packet);
usleep(pstVdecThreadParam->s32IntervalTime);
}
}
end:
if (fmt_ctx)
avformat_close_input(&fmt_ctx);
av_packet_free(&packet);
printf("\033[0;35m chn %d send steam thread return ... \033[0;39m\n", pstVdecThreadParam->s32ChnId);
fflush(stdout);
return (HI_VOID *)HI_SUCCESS;
}© 版权声明
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