* Set the given MpegEncContext to common defaults (same for encoding and decoding).
* The changed fields will not depend upon the prior state of the MpegEncContext.
*/
-void MPV_common_defaults(MpegEncContext *s);
+void ff_MPV_common_defaults(MpegEncContext *s);
static inline void gmc1_motion(MpegEncContext *s,
uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,