[MPlayer-users] Error determining control type

[Dominik Szczerba]

Hi,

I am encoding (3 pass) with -vop scale=640:363,crop=707:544:3:16 and 
 -lavcopts 
vcodec=mpeg4:vbitrate=$BR:vhq:vqmin=2:vqmax=15:keyint=250:vmax_b_frames=0

While navigating during playback with most of resultant avi's I get 
messages like below :

spudec: Error determining control type 0xc4.  Skipping -206 bytes.4% 0 0 0%
spudec: Error determining control type 0x4c.  Skipping -119 bytes.
spudec: Error determining control type 0xc4.  Skipping -206 bytes.3% 0 0 0%
spudec: Error determining control type 0x4c.  Skipping -119 bytes.
spudec: Error determining control type 0xc4.  Skipping -206 bytes.4% 0 0 0%
spudec: Error determining control type 0x4c.  Skipping -119 bytes.
(...)
spudec: Error determining control type 0xd8.  Skipping -6 bytes.0.0% 0 0 0%
spudec: Error determining control type 0xd8.  Skipping -6 bytes.1.6% 0 0 0%
spudec: Error determining control type 0xd8.  Skipping -6 bytes.1.8% 0 0 0%
spudec: Error determining control type 0xd8.  Skipping -6 bytes.1.4% 0 0 0%

They seem to appear only during some parts of movies, not always.

What are they, are they dangerous and how how should they have been avoided?

Thank you
Dominik