Infantile Paralyser have updated their Shell for the NintendoDS. heres whats new:

A fatal bug of betatest3 was corrected.
Seek was supported with DMV.
Quick seek can be done with the cursor key.

copy from betatest3

'Colors saturation' bug was corrected. thanks Kir.
The aspect ratio was detected automatically.
codec was sped up.
Even '256x192pixel 12fps' is confirmed.
However, there is a difference by source movie.
Additionally, a detailed correction was done.

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