[streaming] Re: VLM: limit on number of VOD, opening of media at setup, ...

[Romain Dolbeau]

Clément Stenac wrote:

> This if unfortunately not possible at the moment, though I think it might
> be "quite" easy to do. Please see
> https://trac.videolan.org/vlc/ticket/537. I don't think it will be made
> for 0.8.5 though.

Doesn't matter, it's not exactly critical anyway :-)

> There is no limit, but VLC has not much been tested for scalability in
> VOD. Does the crash happen when you try to view the stream, or when you
> register it ?

Register. But I don't thinks it was a question of number ; I now
duplicate the lock-up with a much smaller number of streams.
(I explain below)

> In the first case, I guess it would mean that too many threads are
> running. In the second case, it might "just" be a simpler bug. Could you
> please try to obtain a backtrace of the crash by running VLC in gdb and
> entering the "bt" command when it crashes ?

It's not really a crash, it's a lock-up; vlc still run, but doesn't
do anything (visible) or answer socket.

I have stopped forwarding RTSP streams, as it's useless ; my
wrapper now simply forward the original URL.

The simple fact of registering streams (17) from the DVB-T card
sometimes cause vlc to crash. My wrapper open a socket connection
to the vlc telnet interface and issues commands that way, waiting
10 seconds between streams. I *believe* the problem appears when
I try to register a stream that doesn't work somehow, either
because the station isn't broadcasting or for some other problem.
I only register 17 because the 18th (CANAL+) will cause a lock-up
more often that not ; they also only broadcast during a small part
of the day (it's mostly an encrypted channel) ...

-- 
Romain Dolbeau
<romain at dolbeau.org>

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