FFmpeg安装使用

一安装

1.官网下载安装 http://www.ffmpeg.org/download.html 

运行configure报错

nasm/yasm not found or too old. Use --disable-x86asm for a crippled build.

原因是未安装汇编工具没有安装，安装yasm即可：

1.下载http://www.tortall.net/projects/yasm/releases/yasm-1.2.0.tar.gz，解压

2.运行configure

3.编译 mke

4.安装 sudo make install

5检查是否安装成功 yasm --version 

 回到ffmpeg文件夹重新运行 ./configure

二 brew安装方法

brew install ffmpeg

错误解决

1.如果报错：No formulae or casks found for "ffmpeg".

这时因为分支不对，切换一下：git -C $(brew --repo homebrew/core) checkout master

2.Error: Command failed with exit 128: git

解决：brew -v

3.fatal: unsafe repository

解决：git config --global --add safe.directory “对应路径”

4.Error: No such file or directory @ rb_sysopen

 

 

报这个错就需要 单独每项安装一下库，一个一个安装比较麻烦，

写了个脚本循环安装

#!/usr/bin/env bash

echo "==========Start=========="


list=("aom" "dav1d" "freetype" "fontconfig" "frei0r" "lame" "fribidi" "pcre" "gdbm" "mpdecimal" "sqlite" "xz" "python@3.9" "glib" "libpthread-stubs" "xorgproto" "libxau" "libxdmcp" "libxcb" "libx11" "libxext" "libxrender" "lzo" "pixman" "cairo" "gobject-introspection" "graphite2" "icu4c" "harfbuzz" "libass" "libbluray" "cjson" "cmocka" "mbedtls" "librist" "libsoxr" "libvidstab" "libogg" "libvorbis" "libvpx" "opencore-amr" "little-cms2" "openjpeg" "opus" "rav1e" "flac" "libsndfile" "libsamplerate" "rubberband" "sdl2" "snappy" "speex" "srt" "leptonica" "libb2" "lz4" "zstd" "libarchive" "tesseract" "theora" "x264" "x265" "xvid" "libsodium" "zeromq" "zimg")
for item in ${list[*]};
do
   echo "======================"
   echo "$item brew install"
   brew install $item
   echo "$item brew cleanup"
   brew cleanup $item
   
done


echo "==========End=========="

运行脚本，重新 brew ffmpeg ，OK安装成功

二、iOS 使用ffmpegAPI

https://www.jianshu.com/p/f07c9278d0f8

Undefined symbols for architecture arm64.：未添加相应的库

项目配置linked frameworks and libraries加上VideoToolbox.framework即可。

其它还有libz.tbd libbz2.tbd libiconv.tbd CoreMedia.framework