Wuola, now you can watch movie and charge your idevice simultaneously. For more advanced adapter usage google for TVOut (of course you need Cydia.)
Step 2: Remove shielding
Than you need to remove shielding, it's soldered around, so start with smaller ones, and last open at the wire side. Actualy I didn't unsolder, I just scraped exces tin with knife, and then gently cracked open it one by one.