(gdb) bt
#0  0x005eef4b in put_pixels_clamped_mmx (block=0x335b160, pixels=0x0,
    line_size=0) at i386/dsputil_mmx.c:282
#1  0x00766bc9 in ff_simple_idct_put_mmx (dest=0x0, line_size=0,
    block=0x335b160) at i386/simple_idct_mmx.c:1288
#2  0x0067b955 in ff_mjpeg_decode_sos (s=0x335acc0) at mjpegdec.c:693
#3  0x0067d3b6 in ff_mjpeg_decode_frame (avctx=0x336e890, data=0x3372940,
    data_size=0x22edac, buf=0x3b30048 " ╪ α", buf_size=125047)
    at mjpegdec.c:1277
#4  0x005b6111 in avcodec_decode_video (avctx=0x336e890, picture=0x3372940,
    got_picture_ptr=0x22edac, buf=0x3b30048 " ╪ α", buf_size=125047)
    at utils.c:920
#5  0x00468442 in decode (sh=0x34018f0, data=0x3b30048, len=125047, flags=0)
    at vd_ffmpeg.c:783
#6  0x004656f6 in decode_video (sh_video=0x34018f0, start=0x3b30048 " ╪ α",
    in_size=125047, drop_frame=0, pts=4) at dec_video.c:370
#7  0x00407898 in main (argc=2, argv=0x22c2778) at mplayer.c:2041