Example (in Delphi): ===============ani.dpr=============== program ani; {$APPTYPE CONSOLE} const FileName='file.ani'; Len=113; Buf=#$52#$49#$46#$46#$00#$00#$00#$00#$41#$43#$4F#$4E#$00#$00#$00#$00#$24#$00+ #$00#$00#$24#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00+ #$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00+ #$4C#$49#$53#$54#$00#$00#$00#$00#$66#$72#$61#$6D#$69#$63#$6F#$6E#$00#$00#$00+ #$00#$00#$00#$00#$00#$01#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$00#$02#$00+ #$16#$00#$00#$00#$28#$00#$00#$00#$FF#$FF#$FF#$00#$02#$00#$00#$00#$00#$00#$01; var F:File; I:Byte; begin AssignFile(F,FileName); Rewrite(F,1); BlockWrite(F, Buf, Len); CloseFile(F); end. ===============ani.dpr=============== 1) Compile and Run "ani.dpr" with Delphi 2) Open "file.ani" with InfanView