[MEncoder-users] mencoder to generate mp4 files for Motorola A1200

[Zhang Weiwu]

Ken Murray wrote:
> 2009/10/18 Zhang Weiwu <zhangweiwu at realss.com>:
>
>   
>> MPEG4 video files： can support 320 to X240, 30fps, 350kbps.
>>     
>
> Perhaps try copying a playable video from your phone that's already in
> that format to your computer. Play said file with mplayer and observe
> the output.  Use said output to create a file using the same settings.
>  That's how I do it.
>
>   
Difficult. I tried bigbuckbunny ipod 5G vesion which is below this spec:
http://www.bigbuckbunny.org/index.php/download/
And it dosn't play on mobile (No needed plugin)

In fact I never saw any clip in mp4 that can playback on this mobile
phone. I have a lot of 3gp format that works. The digital camera embeded
also shoots clips in 3gp format, and surprisingly it can shoot in .3gp
format at 320x240, violating the spec I read.

If I follow this tutorial:
http://www.niemueller.de/wiki/index.php?ConvertVideoTo3GP
I can generate .3gp that plays on the mobile phone at 176x144, but I
could not generate 3gp at 320x240, error (I know it is not an error of
mencoder thus a bit OffTopic):

    $ mencoder dvd://01 -endpos 100 -nosound -ovc lavc -lavcopts
    vcodec=mpeg4 -vf scale=320:240 -o movie.avi -ofps 12
    [output snip, file generated OK to playback]

    $ mplayer -vo null -endpos 100 -ao pcm -af resample=8000 dvd://01
    [output snip, file generated OK to playback]

    $ ffmpeg -i movie.avi -i audiodump.wav -b 48 -ac 1 -ab 12200 -map
    0.0 -map 1.0 movie.3gp
    [snip output of copyright and what compile options are used]
    Input #0, avi, from 'movie.avi':
    Duration: 00:01:40.08, start: 0.000000, bitrate: 678 kb/s
    Stream #0.0: Video: mpeg4, yuv420p, 320x240 [PAR 1:1 DAR 4:3], 12
    tbr, 12 tbn, 12 tbc
    Input #1, wav, from 'audiodump.wav':
    Duration: 00:01:40.35, bitrate: 256 kb/s
    Stream #1.0: Audio: pcm_s16le, 8000 Hz, stereo, s16, 256 kb/s
    WARNING: The bitrate parameter is set too low. It takes bits/s as
    argument, not kbits/s
    Output #0, 3gp, to 'undo.3gp':
    Stream #0.0: Video: h263, yuv420p, 320x240 [PAR 1:1 DAR 4:3],
    q=2-31, 0 kb/s, 90k tbn, 12 tbc
    Stream #0.1: Audio: libamr_nb, 8000 Hz, mono, s16, 12 kb/s
    Stream mapping:
    Stream #0.0 -> #0.0
    Stream #1.0 -> #0.1
    [h263 @ 0x10072bb0]The specified picture size of 320x240 is not
    valid for the H.263 codec.
    Valid sizes are 128x96, 176x144, 352x288, 704x576, and 1408x1152.
    Try H.263+.
    Error while opening codec for output stream #0.0 - maybe incorrect
    parameters such as bit_rate, rate, width or height

Or, how can I generate 320x240 3gp file? e.g. using mencoder. I tried

    $ mencoder dvd://01 -endpos 100 -oac lavc -ovc lavc -lavcopts vcodec=h263p:acodec=amr_nb -of lavf -o movie.3gp
    [snip]
    ==========================================================================
    Audio LAVC, couldn't find encoder for codec amr_nb

    Exiting...
      

Even though it looks like a codec library is missing, I do have
libamrwb3 installed and don't know what other debian package should I
also install.