[MPlayer-users] Multiple slave modes not working

[Reimar Döffinger]

On Sun, Dec 16, 2012 at 11:53:17AM +0100, Tomasz Borsukiewicz wrote:
> > I have 4 monitors and I would like them all to show the same movie.
> > MPlayer dev-SVN-r35127-4.7-openSUSE Linux 12.2 (x86_64)-Packman (C)
> > 2000-2012 MPlayer Team CPU vendor name: GenuineIntel  max cpuid level:
> > 10
> > CPU: Intel(R) Core(TM)2 Quad  CPU   Q9550  @ 2.83GHz (Family: 6, Model:
> > 23, Stepping: 7)
> > extended cpuid-level: 8
> > extended cache-info: 402686016
> > Detected cache-line size is 64 bytes
> > CPUflags:  MMX: 1 MMX2: 1 3DNow: 0 3DNowExt: 0 SSE: 1 SSE2: 1 SSSE3: 1
> > Compiled with runtime CPU detection.
> > 
> > I run NVidea Driver Version: 304.43
> > 
> > I run the mplayer command via slave mode (and see that it starts on
> > DISPLAY=:0.2)
> > mplayer -slave -quiet -idle -fs -udp-master -input
> > file=/tmp/mplayer.fifo
> > 
> > To start a movie I use (via a php script) echo loadfile /dir/movie.mkv
> > 0 > /tmp/mplayer.fifo
> > 
> > To start on a second monitor I use:
> > DISPLAY=:0.3 mplayer -really-quiet -fs -nosound -udp-slave
> > /dir/movie.mkv
> > 
> > So now I have 1 sound source and the movie running on two monitors. No
> > issues so far. However when I want to run it on a third monitor with
> > e.g.
> > DISPLAY=:0.1 mplayer -really-quiet -fs -nosound -udp-slave
> > /dir/movie.mkv
> > 
> > Running with -v instead of -really-quiet shows:
> > Audio: no sound
> > Freeing 0 unused audio chunks.
> > Starting playback...
> > [mpeg4_vdpau @ 0xea1da0]looks like this file was encoded with
> > (divx4/(old)xvid/opendivx) -> forcing low_delay flag
> > *** [vo] Direct Rendering (slices) mp_image_t, 512x296x0bpp RGB packed,
> > 0 bytes Unicode font: 5179 glyphs.
> > Unicode font: 5179 glyphs.
> > V:   0.0   1/  1 ??% ??% ??,?% 0 0
> > *** [vo] Direct Rendering (slices) mp_image_t, 512x296x0bpp RGB packed,
> > 0 bytes <wait about 30 seconds>
> > V:   0.0   2/  2 ??% ??% ??,?% 0 0
> > *** [vo] Direct Rendering (slices) mp_image_t, 512x296x0bpp RGB packed,
> > 0 bytes
> > V:  26.2 657/657  0%  0%  0.0% 0 0
> > <Starts playing from the start>
> > 
> > I will get a black screen and then after a while it will start playing
> > the movie from the start. So it seems as if it isn't connecting to the
> > udp server a second time.
> > 
> > Is there anything I am doing wrong? Is there anything I can test? Or
> > can I only run one slave on a machine? Is there anything else I can do
> > to test or give information?
> > 
> > houghi
> > --
> > >	  Beware of he who would deny you access to information,	 <
> > >	      for in his heart he dreams himself your master.
> > <
> > >	   Commissioner Pravin Lal: "U.N. Declaration of Rights"	 <
> 
> 
> 
> Normally, you can only run one udp-slave instance per machine.
> Second udp-slave instance is trying to bind to the same port as the first
> one, but this is not possible.
> 
> As a workaround, set second and third udp-slave instances to different ports
> and replicate UDP traffic to them.
> You can use iptables tee functionality to do that or third party udp
> relay/proxy software.
> 
> Personally, I've been using samplicator
> (http://code.google.com/p/samplicator/).
> I was running 8 udp-slave instances from one machine, all perfectly synced.

But in this specific case it might make more sense to use the approach
used in TOOLS/mplmult.sh, which doesn't need the udp code and decodes
the stream only once.