From 5bc76680da0acb618c4c680e649e4b2ee1e475da Mon Sep 17 00:00:00 2001
From: LiXiaoqi <2360211477@qq.com>
Date: Sat, 19 Oct 2024 11:31:30 +0800
Subject: [PATCH] build ffmpeg

---
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 create mode 100644 build_ffmpeg.md

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+# 基于Ubuntu源码编译ffmpeg
+## 编译SDL2
+```shell
+https://github.com/libsdl-org/SDL/releases/tag/release-2.30.8 # 下载源码
+cd sdl/source/folder
+./configure --prefix=/usr/local
+make
+sudo make install
+```
+## 安装ffmpeg依赖
+1. 安装包管理工具 aptitude
+   aptitude 与 apt-get一样，是 Debian 系中功能极其强大的包管理工具。 与 apt-get 不同的是，aptitude 在处理依赖问题上更佳一些，当 aptitude 在删除一个包时，会同时删除本身所依赖的包。
+    ```shell
+    sudo apt install aptitude
+    ```
+2. 安装 yasm、nasm
+   yasm、nasm 是两个汇编器，编译 FFmpeg 需要用到。
+   安装命令：
+    ```shell
+    sudo aptitude install yasm nasm
+    ```
+3. 其他依赖
+   FFmpeg 的安装依赖许多库（如，音频编码库，音频解码库，视频编解码库等），这里不介绍每个库的具体作用，按照命令安装即可。
+    ```shell
+    sudo apt-get install libgmp3-dev
+    sudo apt install pkg-config
+    sudo apt install gnutls-bin
+    sudo aptitude install libaom-dev
+    sudo aptitude install libass-dev
+    sudo aptitude install libbluray-dev
+    sudo aptitude install libfdk-aac-dev
+    sudo aptitude install libmp3lame-dev
+    sudo aptitude install libopencore-amrnb-dev
+    sudo aptitude install libopencore-amrwb-dev
+    sudo aptitude install libopenmpt-dev
+    sudo aptitude install libopus-dev
+    sudo aptitude install libshine-dev
+    sudo aptitude install libsnappy-dev
+    sudo aptitude install libsoxr-dev
+    sudo aptitude install libspeex-dev
+    sudo aptitude install libtheora-dev
+    sudo aptitude install libtwolame-dev
+    sudo aptitude install libvo-amrwbenc-dev
+    sudo aptitude install llibvpx-dev
+    sudo aptitude install libwavpack-dev
+    sudo aptitude install libwebp-dev
+    sudo aptitude install libx264-dev
+    sudo aptitude install libx265-dev
+    sudo aptitude install libxvidcore-dev
+    sudo aptitude install liblzma-dev
+    ```
+## 编译ffmpeg
+1. 从官网下载源码
+2. 进入根目录编译
+    ```shell
+    ./configure --enable-shared --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-iconv --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame 
+   --enable-libvpx  --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-lzma --enable-zlib --enable-gmp 
+   --enable-libvorbis --enable-libvo-amrwbenc --enable-libspeex --enable-libxvid 
+   --enable-libaom --enable-libopenmpt --enable-libfdk-aac 
+   --enable-nonfree --enable-nvdec --enable-cuda --enable-cuvid --prefix=/usr/local
+   # 其中 --enable-gpl --enable-libx264 --enable-libx265 --enable-sdl2 必不可少
+   # 由于需要硬件英伟达显卡加速编解码 -enable-nvdec --enable-cuda --enable-cuvid
+   # 其他的要是编译不过，就把他删除掉
+   make
+   sudo make install
+    ```
+   如果需要硬件英伟达显卡加速编解码，需要安装相关依赖
+    ```shell
+    sudo apt install libdssialsacompat-dev
+    git clone https://git.videolan.org/git/ffmpeg/nv-codec-headers.git
+    cd nv-codec-headers
+    make
+    sudo make install
+   ```
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