format  Sint32 MPG_MvChange (MpgMv mpgmv)
 Input  mpgmv: MPEG video handle currently playing
 Output  None
 Function value  Error code
 Function  MPEG stream is forcibly switched. Currently playing stream mpgmv
  is disconnected, and the stream registered with the MPG_MvEntryNext function is played next.
 Remarks  (a) In the following cases, switching fails, so please reissue.
 
 
 
 Current stream is not playing
 During internal update of MPEG system in CD block 
 
 
 

  format  void MPG_MvSetClearMode (MpgMv mpgmv, Sint32 vmode, Sint32 amode)
 Input  mpgmv: MPEG video handle
.  vmode: Video stream deletion mode
:  amode: Audio stream deletion mode
 Output  None
 Function value  None
 Function  Set the buffer clearing method when forcibly switching streams.
 
 (1) Video stream erase mode
 
 MPG_VCLR_VBV_IP: Clear VBV buffer at the next I or P picture start
 MPG_VCLR_ALL: Clear frame buffer and VBV buffer immediately 
 

(2) Audio storm erase mode
 
 MPG_ACLR_NONE: Do not clear
 MPG_ACLR_ALL: Immediately clear all 
 
 
 

  format  void MPG_MvSetLay (MpgMv mpgmv, Sint32 vlay, Sint32 alay)
 Input  mpgmv: MPEG video handle
:  vlay: Video stream layer (MPG_NOCHG: not changed)
:  alay: Audio stream layer (MPG_NOCHG: No change)
 Output  None
 Function value  None
 Function  Set the stream layer. Must be set before starting playback.
 
 (1) Video stream layer
 
 MPG_LAY_SYS system layer
 MPG_LAY_VID Deolayer 
 

(2) Audio stream layer
 
 MPG_LAY_SYS system layer
 MPG_LAY_AUD-Audio layer