[MPlayer-users] Help for H.263 encoder using mencoder

[Paul TT]

On Wed, 23 Nov 2005 16:35:04 +0800
Weilin Chen <cwl0212 at gmail.com> wrote:

> 1. I am sorry about the unclearly question before. I try the command
>  " mencoder ./foreman_cif.yuv -ovc lavc vcodec=h263 -o outfile.263"
>  the encode file is yvu420 format, and the result as shows below:

obvious question:
does mplayer foreman_cif.yuv play it?

>  = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
>  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...
>  = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
=
> it's look like can't decode the yuv file, or somting I loss append to
> the command line?
> 
>  2. I try to modify the file ./libavcodec/apiexample.c to encode the
>  YUV stream using H.263 codec, and the input sequence format is
>  YUV420P. I have checked the encoded file header informations, and
>  those are all correct, but when I try to decode the encoded
stream.263
>  within apiexample function "video_decode_example," it's cannot be
>  decoded correctly, is't can be use to encode the YVU stream and
>  decode the h.263 stream correctly?
> 
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