Confirmed. This seems to be a problem with swfdec being too restrictive about cross-domain access.

It's working now, but Firefox crashes when the movie ends.

Last messages from "firefox -g" on http://rutube.ru/tracks/378373.html

SWFDEC: WARN : swfdec_as_interpret.c(869): swfdec_action_call_function: no function named init
SWFDEC: WARN : swfdec_as_interpret.c(869): swfdec_action_call_function: no function named init
SWFDEC: WARN : swfdec_as_interpret.c(869): swfdec_action_call_function: no function named init

(gecko:5836): Swfdec-CRITICAL **: swfdec_sandbox_use: assertion `SWFDEC_AS_OBJECT (sandbox)->context->global == NULL' failed
SWFDEC: WARN : swfdec_net_stream.c(637): swfdec_net_stream_seek: FIXME: restarting audio after seek

(gecko:5836): Swfdec-CRITICAL **: swfdec_as_context_run: assertion `context->global' failed

(gecko:5836): Swfdec-CRITICAL **: swfdec_sandbox_unuse: assertion `SWFDEC_AS_OBJECT (sandbox)->context->global == SWFDEC_AS_OBJECT (sandbox)' failed

Swfdec-ERROR **: file swfdec_net_stream.c: line 207 (swfdec_net_stream_update_playing): assertion failed: (stream->audio == NULL)
aborting...

Program received signal SIGABRT, Aborted.
[Switching to Thread 47434332728480 (LWP 5836)]
0x0000003c6c630ec5 in raise () from /lib64/libc.so.6



x86_64, Fedora 8 with all updates, 64-bit Firefox 2.0.0.10 from Fedora, current swfdec and swfdec-mozilla (from git).

crash == blocker

*** Bug 13855 has been marked as a duplicate of this bug. ***

The link from here and from the duplicate work in 1040647dfd13d32660a2d21339f476533c87919e. So I hope I got it fixed.