got error on Mac OX need help

[AndyZhengSeven]

when I use vlc on my own application，I got error with some of videos

I use libvlc_video_set_callbacks(_vlc_player, lock, unlock, display, this); and libvlc_video_set_format(_vlc_player, "RGBA"/*"RV32"*/, _width, _height, _width * 4); functions

Assertion failed: (pic->context != NULL), function cvpxpic_get_ref, file ../../extras/package/macosx/../../../modules/codec/vt_utils.c, line 121.

just some of videos got this error！！！！