[MEncoder-users] mencoder problem on h.263 encoder

[Weilin]

Dear all:

I am new studying on h.263 enocding yuv (foreman_cif.yuv)sequence, and I type 
the command "mencoder ./foreman_cif.yuv -ovc lavc -lavcopts vcodec=h263 -o 
out.263," than some error messages as shows below:

-------------------------------------------------------------------------------
MEncoder 1.0pre7try2-3.3.4 (C) 2000-2005 MPlayer Team
CPU: Intel  (Family: 8, Stepping: 1)
Detected cache-line size is 64 bytes
CPUflags: Type: 8 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2

File not found: 'frameno.avi'
Failed to open frameno.avi
success: format: 0  data: 0x0 - 0x2b81800
libavformat file format detected.
picture size invalid (0x0)
LAVF_header: av_find_stream_info() failed
============ Sorry, this file format is not recognized/supported =============
=== If this file is an AVI, ASF or MPEG stream, please contact the author! ===
Cannot open demuxer.

Exiting...
-------------------------------------------------------------------------------


Is the yuv stream cannot be encode by mencoder for h.263 encoding? 
I try to encode the other file.avi to 263 raw file, and type the command 
"mencoder free1.avi -ovc lavc -lavcopts vcodec=h263 -o out.263," and the 
results are showns below: 

---------------------------------------------------------------------------
MEncoder 1.0pre7try2-3.3.4 (C) 2000-2005 MPlayer Team
CPU: Intel  (Family: 8, Stepping: 1)
Detected cache-line size is 64 bytes
CPUflags: Type: 8 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2

File not found: 'frameno.avi'
Failed to open frameno.avi
success: format: 0  data: 0x0 - 0x741600
AVI file format detected.
AVI_NI: No audio stream found -> no sound.
AVI: No audio stream found -> no sound.
VIDEO:  []  176x144  24bpp  30.000 fps  18247.7 kbps (2227.5 kbyte/s)
[V] filefmt:3  fourcc:0x0  size:176x144  fps:30.00  ftime:=0.0333
Opening video filter: [expand osd=1]
Expand: -1 x -1, -1 ; -1  (-1=autodetect) osd: 1
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 176 x 144 (preferred csp: BGR 24-bit)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
VDecoder init failed :(
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 176 x 144 (preferred csp: BGR 24-bit)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
VDecoder init failed :(
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 176 x 144 (preferred csp: BGR 24-bit)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
VDecoder init failed :(
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 176 x 144 (preferred csp: BGR 24-bit)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
VDecoder init failed :(
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 176 x 144 (preferred csp: BGR 24-bit)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
VDecoder init failed :(
Opening video decoder: [raw] RAW Uncompressed Video
VDec: vo config request - 176 x 144 (preferred csp: BGR 24-bit)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
VDec: using BGR 24-bit as output csp (no 0)
Opening video filter: [flip]
Movie-Aspect is undefined - no prescaling applied.
SwScaler: using unscaled BGR 24-bit -> Planar YV12 special converter
videocodec: libavcodec (176x144 fourcc=33363268 [h263])
Selected video codec: [rawbgr24flip] vfm:raw (RAW BGR24)
==========================================================================
Writing AVI header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp 
header.
New_Face failed. Maybe the font path is wrong.
Please supply the text font file (~/.mplayer/subfont.ttf).
subtitle font: load_sub_face failed.
ODML: Aspect information not (yet?) available or unspecified, not writing vprp 
header.
Pos:   3.3s    100f (98%)   0fps Trem:   0min   0mb  A-V:0.000 [517:0]
Flushing video frames

Writing AVI index...
Fixing AVI header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp 
header.

Video stream:  517.992 kbit/s  (64749 bps)  size: 215830 bytes  3.333 secs  
100 frames
-------------------------------------------------------------------------------