Hey Mani - I got it working, but Kaltura seems to be a big pain. If you were working in a virtualized environment like AWS or the machine you have Kaltura installed on somehow had it's URL changed, Kaltura will stop working. There is some voodoo to get it back in business though - I used these instructions successfully:
http://www.kaltura.org/preinstalled-kaltura-ce-migration-other-domain
I'm not sure about troubleshooting your Canvas to Kaltura connection, but maybe that link will help you get back into business with Kaltura at least.