bt
#0  0x080ab4a6 in vo_update_osd ()
#1  0x00000004 in ?? ()
#2  0x08a9c010 in ?? ()
#3  0x089902ac in ?? ()
#4  0xffffffff in ?? ()
#5  0x0898e1e0 in ?? ()
#6  0x00000001 in ?? ()
#7  0x08a9c010 in ?? ()
#8  0x083b439f in ff_mpeg4_decode_mb ()
#9  0xafc2e3c4 in ?? ()
#10 0x087ce5e1 in mplayer_opts ()
#11 0x00000020 in ?? ()
#12 0x089905e0 in ?? ()
#13 0x00000000 in ?? ()


Again with gdb pointing to source...
 bt
#0  0x080ab42a in vo_update_osd ()
#1  0x00000004 in ?? ()
#2  0x08a9c0f8 in ?? ()
#3  0x089902ac in ?? ()
#4  0x0000f908 in ?? ()
#5  0x0898e1e0 in ?? ()
#6  0x0000007f in ?? ()
#7  0x089902ac in ?? ()
#8  0x083b439f in ff_mpeg4_decode_mb ()
#9  0x000001b6 in ?? ()
#10 0x087ce5e1 in mplayer_opts ()
#11 0x00000020 in ?? ()
#12 0x083a6c5c in ff_mpeg4_decode_picture_header ()
#13 0x000000f0 in ?? ()
#14 0x08a8f6a0 in ?? ()
#15 0x08a9c0f8 in ?? ()
#16 0x08a9c0f8 in ?? ()
#17 0x00000015 in ?? ()
#18 0x08a8f6a0 in ?? ()
#19 0xa7bbd4f8 in __after_morecore_hook () from /lib/tls/libc.so.6
#20 0xa68f0ac0 in ?? ()
#23 0x000008c0 in ?? ()
#24 0x080b7c4a in vo_xv_enable_vsync ()
#25 0xaffc058c in ?? ()