Bad frames in VOBs after decrypting

[smekoslav]

OK, here's the deal: I normally decrypted VOBs of this Star Trek episode (which played without bad frames on DVD player), but when previewing vobs in DGIndex, there were 3 bad frames (scrambled picture); DGIndex reported the bad frames as ''motion code error''. It happens always to the same 3 frames if decrypting with DVD Decrypter or SmartRipper (haven't tried other decrypters).
please help, i need to know what's causing this

[smekoslav]

Attached to this reply is the picture of bad frame.

[neuron2]

Apparently, there is an error in the MPEG2 stream. Is this a commercial DVD? If not, and the VOB was made from a capture off air, then apparently there was a dropout.

[smekoslav]

The DVD is 100% original, bought on www.amazon.co.uk!!
And it works perfectly if played on any DVD Player or in Windows Media Player!! The bad frames appear only after decrypting.

[CWR03]

Decrypting tends to be more sensitive to errors than playback. You may just have to live with it.