--- a/MediaPlayer.cpp	Thu Mar 20 17:38:29 2014 +0600
+++ b/MediaPlayer.cpp	Thu Mar 20 18:44:27 2014 +0600
@@ -7,7 +7,6 @@
   #include "lib/libswscale/swscale.h"
   #include "lib/libswresample/swresample.h"
   #include "lib/libavutil/opt.h"
-  //#include "libavutil/samplefmt.h"
 }
 #pragma comment(lib, "avcodec.lib")
 #pragma comment(lib, "avformat.lib")
@@ -25,8 +24,6 @@
 using namespace Media;
 
 
-
-
 class MemoryStream
 {
   public:
@@ -662,9 +659,9 @@
     {
     }
 
-    virtual void GetNextFrame(double dt, void *dst_surface)
+    virtual void GetNextFrame(double dt, void *dst_surface)// рисует сразу на экран
     {
-      playback_time += dt;
+      playback_time += dt;//изменение времени
 
       AVPacket *avpacket = decoding_packet;
       AVFrame *avframe = decoding_frame;
@@ -680,7 +677,7 @@
       volatile int decoded = false;
       do
       {
-        if (av_read_frame(format_ctx, avpacket) < 0)
+        if (av_read_frame(format_ctx, avpacket) < 0) //воспроизведение завершено
         {
           // probably movie is finished
           __debugbreak();