[Galene] ANNOUNCE: galene-0.5.1

[Juliusz Chroboczek <jch@irif.fr>]

Galene 0.5.1 is available by doing

  git clone -b galene-0.5.1 https://github.com/jech/galene

For more information about the Galene videoconference server, please see

  https://galene.org

The Russian invasion of Ukraine is still ongoing, and there is a major
refugee crisis in Europe.  Please consider donating to Ukrainian causes,
and, if you are in Europe, volunteer to help refugees or to lend them
accomodation.

This version enables simulcast and SVC in Firefox.  This is rather neat,
since Firefox is used a lot in Academia, and SVC dramatically improves
video quality of large lectures and seminars.  An unfortunate side effect
is that VP9 no longer works with Firefox (Firefox bug 1633876); this is
not a problem in the default group configuration, which uses VP8 for
compatibility with Apple devices.  Should you run into the issue, please
ask the speaker to disable simulcast in the side menu.

I've also fixed rate control in Firefox (another interesting Firefox bug,
I'll tell you at some other time).

There were some significant fixes to the code that saves to disk.  In the
presence of heavy packet loss, we no longer corrupt the data, but the
saved stream still suffers from audio-video desynchronisation.  I'm still
investigating.

25 March 2022: Galene 0.5.1

  * Enable simulcast on Firefox.
  * Fix rate control on Firefox.
  * Fix corruption after packet reordering when saving to disk.
  * Fix the H.264 profile for compatibility with older iPhones.
  * Display a warning when joining a locked group.
  * Add a hook that allows the client to influence the ICE policy.
  * Fix error handling in peer-to-peer file transfer.

-- Juliusz