rewrite comments into one, unified style

code/user/apps/video/video.c

@@ -1,3 +1,5 @@
+// User application entry points for video.
+
 #include <windows.h>
 #include <stdint.h>
 #include <stddef.h>
@@ -5,6 +7,7 @@
 #include <intrin.h>
 #include "bink.h"
 
+// Implements the command Line Second Token operation.
 static const char* commandLineSecondToken(const char* cmdline, char* out, size_t outSize) {
     if (!out || outSize == 0) return "video.bk2";
     strcpy(out, "video.bk2");
@@ -37,6 +40,7 @@ static const char* commandLineSecondToken(const char* cmdline, char* out, size_t
     return out;
 }
 
+// Runs the requested operation.
 int main(void) {
     const char* cmdline = GetCommandLineA();
     char videoPath[260];
@@ -92,7 +96,7 @@ int main(void) {
         ExitProcess(1);
     }
 
-    // Prepare the Win32 BITMAPINFO structure
+    // Prepare the Win32 BITMAPINFO structure.
     BITMAPINFO bmi;
     memset(&bmi, 0, sizeof(bmi));
     bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
@@ -121,7 +125,7 @@ int main(void) {
 
         // Welcome to the GDI pipeline!
         PAINTSTRUCT ps;
-        // Using NULL/0 as the HWND since we don't have a real window handle yet
+        // Using NULL/0 as the HWND since we don't have a real window handle yet.
         HDC hdc = BeginPaint((HWND)0, &ps);
 
         StretchDIBits(