[MEncoder-users] error: cannot find codec (winxp->linux)

[Guillaume POIRIER]

Hi,

On 2/2/06, GROG! <Uber.GROG at gmail.com> wrote:
> Hi all. This is my first time posting here & I'm a real NOOB when it
> comes to video encoding, so please be kind :?)
>
> I'm trying to use mencoder (dev-CVS-050928-16:38-3.4.2) on my winxp
> box to resize videos to play on my zaurus handheld (running linux)
> using mplayer (1.0pre6-3.4.3).
>
> The encoding seems to go fine. I'm using this command that I took off
> of an old howto site, so I'm not sure of the verasity of all the
> options:
>
>     c:\progra~1\mplayer\mencoder infile.avi -srate 24000 -ofps 15
>     -sws 2 -ovc lavc -vf scale=320:240,eq2=1.0:0.6:0.1:0.7 -lavcopts
>     vcodec=mpeg4:vhq:vbitrate=150 -lameopts cbr:br=64:mode=3 -vop
>     scale=320:240 -oac mp3lame -o outfile.avi
>
> But when I try to play the file on the handheld, I get audio but no video. I
> noticed this error:
>
>     Cannot find codec matching selected -vo and video format 0x34504D46.
>
> Now AFAIK mplayer has the mpeg-4 codec built in:
>
>     $ mplayer -vc help | grep -i "mpe*g[-\. ]*4"
>     ff4xm       ffmpeg    working   FFmpeg 4XM video  [4xm]
>     ffdivx      ffmpeg    working   FFmpeg DivX ;-) (MS MPEG-4 v3)  [msmpeg4]
>     ffmp42      ffmpeg    working   FFmpeg M$ MPEG-4 v2  [msmpeg4v2]
>     ffmp41      ffmpeg    working   FFmpeg M$ MPEG-4 v1  [msmpeg4v1]
>     ffodivx     ffmpeg    working   FFmpeg MPEG-4  [mpeg4]
>     xvid        xvid      working   XviD (MPEG-4)  [libxvidcore.a]
>     divxds      dshow     working   DivX ;-) (MS MPEG-4 v3)  [divx_c32.ax]
>     divx        vfw       working   DivX ;-) (MS MPEG-4 v3)  [divxc32.dll]
>     mpeg4ds     dshow     working   Microsoft MPEG-4 v1/v2  [mpg4ds32.ax]
>     mpeg4       vfw       working   Microsoft MPEG-4 v1/v2  [mpg4c32.dll]
>     ubmp4       vfw       problems  UB Video MPEG 4  [ubvmp4d.dll]
>     qtmpeg4     qtvideo   crashing  win32/quicktime MPEG-4 decoder
>         [QuickTime.qts]
>
> But when I run 'mplayer -v outfile.avi', I notice this:
>
>     ==> Found video stream: 0
>     ====== STREAM Header =====
>     Type: vids   FCC: FMP4 (34504D46)
>     Flags: 0
>     Priority: 0   Language: 0
>     InitialFrames: 0
>     Rate: 15/1 = 15.000
>     Start: 0   Len: 81286
>     Suggested BufferSize: 35863
>     Quality 0
>     Sample size: 0
>     ==========================
>     found 'bih', 40 bytes of 40
>     ======= VIDEO Format ======
>     biSize 40
>     biWidth 320
>     biHeight 240
>     biPlanes 1
>     biBitCount 24
>     biCompression 877677894='FMP4'
>     biSizeImage 230400
>     ===========================
>
> Now I found references in the mencoder.devel list about there being an
> inconsistancy with FMP4 between windows & linux codecs. Could this be
> the problem? Is there any hope of me being able to convert my videos?


RTF FAQ: http://tuxrip.free.fr/MPlayer-DOCS-HTML/en/faq.html#id295145

It looks like the version of MEncoder you've used is not correct. FMP4
was introduced in pre7.

Guillaume
--
A word to the wise ain't necessary - it's the stupid ones that need the advice.
    Bill Cosby

MPlayer's doc isn't up-to-date. Visit my updated mirror here:
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http://tuxrip.free.fr//MPlayer-DOCS-HTML/fr/