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Posted: **20 Feb 2007 12:08**

Hello the world!

first of all, i'm sorry for my poor english (french guy) but i'll try to be understandable ...

I'm trying to create a mosaic from different video flows. That"s working, but with only 4 pictures, the CPU usage is 100% and pictures are freezing, jerking etc... (DAMNED!) that's pretty strange, because i saw some people putting 20 pictures on a mosaic with VLC and that's workig good...

So ... if someone here can help me to resolve my problem... that should be very nice!

by the way, the computer is an old PIV 2.4Ghz with 1Go RAM and the graphic card is an ASUSTeck with an nVidia 4600 chipset and 128Mo of memory and of course with a linux fedora core 6 and VLC 0.8.6.a-1 (livna repo)

here is my mosaic.sh :

Code: Select all

vlc -I telnet -V display --no-skip-frames --no-drop-late-frames --ttl 12 --udp-caching 900 --no-audio --vlm-conf /home/Arafel/vlc/mosaic.conf -vvv

And my vlm (mosaic.conf)

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# Comment the following line if you don't want to reset your VLM configuration
del all

# Background options
new   bg broadcast enabled
setup bg input     "fake:" option "fake-file=/home/Arafell/vlc/black.png"
setup bg option    sub-filter=mosaic
# setup bg output    #bridge-in{offset=100}:display
setup bg output     #transcode{vcodec=mp4v,vb=3072,scale=1,sfilter=mosaic}:bridge-in{offset=100}:duplicate{dst=display,dst=std{access=udp{ttl=12},mux=ts,dst=239.255.10.10:1234,sap,name="bg"}} option sout-all


# Mosaic options
setup bg option mosaic-alpha=255
setup bg option mosaic-height=288
setup bg option mosaic-width=360
setup bg option mosaic-align=5
setup bg option mosaic-xoffset=10
setup bg option mosaic-yoffset=10
setup bg option mosaic-vborder=5
setup bg option mosaic-hborder=10
setup bg option mosaic-position=1
setup bg option mosaic-rows=2
setup bg option mosaic-cols=2
setup bg option mosaic-order=Chan1,Chan2,Chan3,Chan4
setup bg option mosaic-delay=0
setup bg option mosaic-keep-picture

# Input options
new   Chan1 broadcast enabled
setup Chan1 input     "udp://@239.255.10.1:10001" option "access-filter=timeshift"
setup Chan1 output #duplicate{dst=mosaic-bridge{id=Chan1,width=175,height=141},select=video,dst=bridge-out{id=0},select=audio}

new   Chan2 broadcast enabled
setup Chan2 input     "udp://@239.255.10.1:10002" option "access-filter=timeshift"
setup Chan2 output #duplicate{dst=mosaic-bridge{id=Chan2,width=175,height=141},select=video,dst=bridge-out{id=1},select=audio}

new   Chan3 broadcast enabled
setup Chan3 input     "udp://@239.255.10.1:10003" option "access-filter=timeshift"
setup Chan3 output #duplicate{dst=mosaic-bridge{id=Chan3,width=175,height=141},select=video,dst=bridge-out{id=2},select=audio}

new   Chan4 broadcast enabled
setup Chan4 input     "udp://@239.255.10.1:10004" option "access-filter=timeshift"
setup Chan4 output #duplicate{dst=mosaic-bridge{id=Chan4,width=175,height=141},select=video,dst=bridge-out{id=3},select=audio}

# Launch everything
control bg play
control Chan1 play
control Chan2 play
control Chan3 play
control Chan4 play

# end of mosaic batch

I partially used the great http wizzard and the wiki ( http://wiki.videolan.org/Mosaic )

what else ... ?

If you have any question, just ask...

and i thank you by advence...

Arafel

Posted: **20 Feb 2007 14:29**

Sorry I forgot ...

i have always this message :

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[00000324] [Média: bg] stream_out_transcode private debug: late picture skipped (645817)
[00000324] [Média: bg] stream_out_transcode private debug: late picture skipped (607060)
[00000324] [Média: bg] stream_out_transcode private debug: late picture skipped (568291)
[00000324] [Média: bg] stream_out_transcode private debug: late picture skipped (529456)
[00000324] [Média: bg] stream_out_transcode private debug: late picture skipped (490513)
[00000324] [Média: bg] stream_out_transcode private debug: late picture skipped (451689)

Posted: **22 Feb 2007 22:18**

The 20 pics mosaic was achieved on a dual xeon 2.6GHz server, and it was streaming mpeg2 video, not mpeg4 (which is harder to encode).

I can't see what's wrong with your setup.
Maybe the timeshift filter, this definitively shouldn't be added to the inputs' configuration. and don't use the --no-{skip,drop-late}-frames options, if they need to be skipped once in a while it'll be better than completely crashing (although that only applies to mpeg2 video i believe).

Posted: **23 Feb 2007 11:13**

Ok i just tested all these tips, and that"s working better ... now i just loose some frames ans that's dropping a lot... and i still have this :

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00000476] [Média: bg] mosaic private debug: too late picture for Chan2 (224444)
[00000476] [Média: bg] mosaic private debug: too late picture for Chan1 (773970)
[00000476] [Média: bg] mosaic private debug: too late picture for Chan4 (316132)
[00000476] [Média: bg] mosaic private debug: too late picture for Chan2 (346645)
[00000484] [Média: bg] main private warning: vout synchro warning: pts != current_date (-80000)
[00000341] [Média: bg] main private warning: late buffer for mux input (84918)
[00000324] [Média: bg] stream_out_transcode private debug: late picture skipped (96038)
[00000324] [Média: bg] stream_out_transcode private debug: late picture skipped (57338)
[00000324] [Média: bg] stream_out_transcode private debug: late picture skipped (18380)
[00000343] [Média: bg] mosaic private debug: too late picture for Chan1 (857682)
[00000343] [Média: bg] mosaic private debug: too late picture for Chan4 (399844)
[00000343] [Média: bg] mosaic private debug: too late picture for Chan2 (430357)
[00000476] [Média: bg] mosaic private debug: too late picture for Chan1 (720411)
[00000476] [Média: bg] mosaic private debug: too late picture for Chan4 (421984)
[00000476] [Média: bg] mosaic private debug: too late picture for Chan2 (452497)
[00000001] main private debug: removing all interfaces
[00000311] main interface debug: thread 3065699216 joined (interface/interface.c:258)
....

i think that my testing computer is not enough powerful i'll try in a core2duo in a few minutes and i'll let you know

thanks a lot for your help

Posted: **23 Feb 2007 12:13**

Yeah let's rock!!!

With a core2duo it's working ... (comme le dirait thierry roland : "Comme papa dans maman!"

thanks again for your precious help! you're doing a real good job ... VLC is magic!

Posted: **23 Feb 2007 22:50**

De rien

Posted: **26 Feb 2007 10:42**

t'imagines pas à quel point tu m'as aidé n'empèche!

en cas, du 10 mars au 16 mars je suis à paris pour la RHCE, si ca te dit qu'on s'en jette quelques uns derriere le gozier ... j'en serais... honnoré...

The VideoLAN Forums

Please, need help for a mosaic ...

Please, need help for a mosaic ...