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# 前言
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FFmpeg是一个跨平台的多媒体库,也是目前音视频领域应用最广泛的库。包括libavcodec、libavformat、libavutil、</br>
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libavdevice、libavfilter、libswscale、libswresample、libpostproc等模块。其中avcodec用于编解码,</br>
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avformat用于解封装,avutil是提供工具类,avdevice用于各平台的设备接入,avfilter提供滤镜操作,</br>
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swscale提供图像缩放与像素格式转换,swresample提供音频重采样,postproc提供高级处理。</br>
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在这里,按照每个模块功能进行分析,如有错漏不当之处,敬请指出。</br>
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### 1:AVIOContext、IO模型与协议
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[AVIOContext结构体](https://blog.csdn.net/u011686167/article/details/121452343)
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### 2:AVFormatContext连接FFmpeg的桥梁
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[AVFormatContext](https://blog.csdn.net/u011686167/article/details/121483584)
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### 3:AVCodecContext编解码器上下文
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[AVCodecContext](https://blog.csdn.net/u011686167/article/details/121506335)
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### 4:AVStream码流
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[码流数组](https://blog.csdn.net/u011686167/article/details/121528354)
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### 5:AVFrame与AVPacket
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[AVFrame与AVPacket](https://blog.csdn.net/u011686167/article/details/121551041)
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### 6:avformat_open_input()打开媒体流
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[打开媒体流](https://blog.csdn.net/u011686167/article/details/121578185)
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### 7:avformat_find_stream_info分析码流信息
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[分析码流信息](https://blog.csdn.net/u011686167/article/details/121630969)
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### 8:av_read_frame()读取音视频帧
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[读取音视频帧](https://blog.csdn.net/u011686167/article/details/121642861)
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### 9:av_parser_parse2()解析数据包
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[解析数据包](https://blog.csdn.net/u011686167/article/details/121667755)
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### 10:av_register_all()注册封装器与解封装器
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[注册封装器与解封装器](https://blog.csdn.net/u011686167/article/details/121691245)
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