Mine

dvogel@lukahn:~/vnc/pngs$ mplayer -v mf://*.png
MPlayer 1.0rc1-4.1.2 (C) 2000-2006 MPlayer Team
CPU: AMD Athlon(tm) XP 2100+ (Family: 6, Model: 6, Stepping: 2)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled with runtime CPU detection.
get_path('codecs.conf') -> '/home/dvogel/.mplayer/codecs.conf'
Reading /home/dvogel/.mplayer/codecs.conf: CommandLine: '-v' 'mf://*.png'
init_freetype
Using MMX (with tiny bit MMX2) Optimized OnScreenDisplay
Using nanosleep() timing
get_path('input.conf') -> '/home/dvogel/.mplayer/input.conf'
Can't open input config file /home/dvogel/.mplayer/input.conf: No such file or directory
Parsing input config file /etc/mplayer/input.conf
Input config file /etc/mplayer/input.conf parsed: 67 binds
Opening joystick device /dev/input/js0
Can't open joystick device /dev/input/js0: No such file or directory
Can't init input joystick
Setting up LIRC support...
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
get_path('*.png.conf') -> '/home/dvogel/.mplayer/*.png.conf'

Playing mf://*.png.
get_path('sub/') -> '/home/dvogel/.mplayer/sub/'
STREAM: [mf] mf://*.png
STREAM: Description: Multiple files input
STREAM: Author: Benjamin Zores, Albeu
STREAM: Comment:
MF file format detected.
[mf] search expr: *.png
[mf] number of files: 60 (240)
[demux_mf] file type was not set! trying 'type=png'...
==> Found video stream: 0
VIDEO:  [MPNG]  0x0  24bpp  25.000 fps    0.0 kbps ( 0.0 kbyte/s)
[V] filefmt:16  fourcc:0x474E504D  size:0x0  fps:25.00  ftime:=0.0400
get_path('sub/') -> '/home/dvogel/.mplayer/sub/'
X11 opening display: localhost:10.0
Xlib:  extension "XFree86-VidModeExtension" missing on display "localhost:10.0".
vo: X11 color mask:  FFFFFF  (R:FF0000 G:FF00 B:FF)
vo: X11 running at 2560x1024 with depth 24 and 32 bpp (":10.0" => remote display)
[x11] Unknown wm type...
[x11] Current fstype setting doesn't honour any X atoms
==========================================================================
Cannot find codec matching selected -vo and video format 0x474E504D.
Read DOCS/HTML/en/codecs.html!
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vo: uninit ...

Exiting... (End of file)