BBC BASIC Programmers' Reference

by Richard Russell, June 2013

This is a very simple, no-frills, way of playing an AVI movie file:

      avifile% = OPENIN("*.avi")
      IF avifile% = 0 THEN QUIT
      CLOSE #avifile%
      avifile$ = $$!420

      PROCmci("open """ + avifile$ + """ type avivideo alias movie style popup")
      PROCmci("play movie wait")
      PROCmci("close movie")
      END

      DEF PROCmci(cmd$)
      LOCAL R%, S%
      DIM R% LOCAL 128
      SYS "mciSendString", cmd$, R%, 128, 0 TO S%
      IF S% ERROR 100, "mciSendString failed: " + STR$(S%)
      ENDPROC