首次提交，可运行。但有两问题：1.画质不佳, 2.无音频

FrameConvert.h

@@ -0,0 +1,41 @@
+#pragma once
+
+extern "C"
+{
+    #include<libavutil/pixfmt.h>
+    #include<libswscale/swscale.h>
+}
+
+typedef uint8_t *FrameData[8];
+typedef int FrameLinesize[8];
+
+class FrameConvert
+{
+    AVPixelFormat src_fmt,dst_fmt;
+    uint32_t width,height;
+
+    SwsContext *ctx;
+
+    FrameData dst_data;
+    FrameLinesize dst_linesize;
+
+private:
+
+    friend FrameConvert *InitFrameConvert(enum AVPixelFormat dst,enum AVPixelFormat src,const uint32_t w,const uint32_t h);
+
+    FrameConvert(SwsContext *sc,enum AVPixelFormat dst,enum AVPixelFormat src,const uint32_t w,const uint32_t h);
+
+public:
+
+    ~FrameConvert();
+
+    void Convert(const FrameData &src_data,const FrameLinesize &src_linesize);
+
+    const FrameData &GetData()const{return dst_data;}
+    const FrameLinesize &GetLinesize()const{return dst_linesize;}
+
+    const uint8_t *GetData(const int index)const{return dst_data[index];}
+    const int GetLinesize(const int index)const{return dst_linesize[index];}
+};//class FrameConvert
+
+FrameConvert *InitFrameConvert(enum AVPixelFormat dst,enum AVPixelFormat src,const uint32_t w,const uint32_t h);