EFI_PAGE_SIZE instead of magic, small readme tweaks

main.cpp

@@ -324,7 +324,7 @@ EFI_STATUS efi_main(EFI_HANDLE ImageHandle, EFI_SYSTEM_TABLE* SystemTable) {
 
     VOID* HeapMemory = NULL;
     UINTN AllocationSize = 512 * 1024 * 1024; // 512 MB
-    UINTN Pages = AllocationSize / 4096;      // UEFI page size is 4KB
+    UINTN Pages = AllocationSize / EFI_PAGE_SIZE;
 
     EFI_STATUS Status = gBS->AllocatePages(
         AllocateAnyPages,

readme.md

@@ -47,8 +47,11 @@ A: Science isn't about 'why', it's about 'why not'.
 Q: Why not raw frames?  
 A: Too simple.
 
+Q: How did you implement file I/O?
+A: I didn't. I just preload the entire video into memory.
+
 Q: Is this finished?  
-A: Some parts yes.
+A: Mostly yes.
 
 Q: Can I use this in production?  
 A: Define production.