Just wanted to provide some data points about some recent Jitsi
usage. System A is Debian Wheezy 64-bit, system B is Windows 7
64-bit. The 'nightly' being referred to is 5272.
* Using VP8, calls between nightly on A and nightly on B, in either
direction, connect successfully, but there's no video or audio.
* Using H.264, calling from nightly on A to stable on B will crash
Jitsi on B.
* Using H.263-1998, calls between nightly on A and nightly on B, in
either direction, will crash both instances of Jitsi.
If further details are required, i only have immediate and direct access
to system A, but can arrange to work with system B if needed.