Although, I waited for the 14.1 update, but there seems to be no video avalaible.
Steps to reproduce
Open a chat:The camera symbol is "grayed out".
OS version: Windows Server 2008 R2 [x64], en, all patches
GTK version: Sorry, don't know [I think, GTK comes with Gajim].
Note:This could also depend on this issue:#5928 (closed)