There is not a video for the any of the EasyFill items, including refilling the capsules.
It is very simple, you remove the capsule from the key, then remove the fill plug, using a syringe and blunt tip needle inject approximately 10mls of ink into the capsule. Reinstall the fill plug and reinstall capsule into the key. You can manually reset your capsules if you would like the option of refilling all the capsules at the same time to avoid having to do them 1 at a time. The resetter can be purchased here http://shopping.netsuite.com/s.nl/c.362672/it.A/id.5752/.f