Can't see video from vls

[arnaud.duclaux at enst-bretagne.fr]

Hello,
When I read files or DVD directly with vlc, there's no problem, it works fine.
But when I want to see streaming video from a vls, there's only a black screen.

Here the ouput of vlc --vout x11 -v:
vpar synchro warning: backward_pts != current_pts (-66734)
Stream periodicity changed from B[1] to B[3]
Stream periodicity changed from B[3] to B[2]
Stream periodicity changed from B[2] to B[4]
Stream periodicity changed from B[4] to B[2]
Stream periodicity changed from P[5] to P[7]
vpar synchro warning: dts != current_pts (-301071)
skipped macroblock in I-picture
skipped macroblock in I-picture
skipped macroblock in I-picture
vpar synchro warning: backward_pts != current_pts (-66734)
Stream periodicity changed from B[2] to B[1]
Stream periodicity changed from B[1] to B[2]
Stream periodicity changed from B[2] to B[3]
Stream periodicity changed from B[3] to B[2]
Stream periodicity changed from P[7] to P[5]
...

Where does the problem come from ? vlc or vls ? What can I do ?

Thanks,

Arnaud Duclaux