The VideoLAN Forums

Posted: **22 Apr 2012 11:25**

Hi,

I used VLC 1.11 to display four Axis-Webcams in one mosaic pictures without any problem.

After upgrading to VLC 2.0 I changed a little bit the code, because the fake input was not longer supported. Finally, I got the mosaic with the four axis webcams, but the picture is not smooth. It seems that there are many frames dropped. The CPU usage is about 40%.

Here is my code:

Code: Select all

new channel1 broadcast enabled
setup channel1 input rtsp://192.168.2.100/axis-media/media.amp?codec=h264
setup channel1 option network-caching=600
setup channel1 output #mosaic-bridge{id=1,width=480,height=360} 

new channel2 broadcast enabled
setup channel2 input rtsp://192.168.2.101/axis-media/media.amp?codec=h264
setup channel2 option network-caching=600
setup channel2 output #mosaic-bridge{id=2,width=480,height=360} 

new channel3 broadcast enabled
setup channe3 input rtsp://192.168.2.102/axis-media/media.amp?codec=h264
setup channel3 option network-caching=600
setup channel3 output #mosaic-bridge{id=3,width=480,height=360}

new channel4 broadcast enabled
setup channel4 input rtsp://192.168.2.103/axis-media/media.amp?codec=h264
setup channel4 option network-caching=600
setup channel4 output #mosaic-bridge{id=4,width=480,height=360} 

new test broadcast enabled
setup test input "file:///background.jpg"
setup test option image-duration=-1
setup test option image-fps=0
setup test output #transcode{sfilter=mosaic,vcodec=mp4v,vb=8500,fps=25}:display

control channel1 play
control channel2 play
control channel3 play
control channel4 play


control test play

I start VLC with

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SET PATH=%PATH%;%programfiles%\videolan\vlc\;%programfiles(x86)%\videolan\vlc\
vlc --mosaic-width=960 --mosaic-height=720 --mosaic-delay=1 --vlm-conf=%1

Any help is greatly appreciated.

Manfred

Posted: **24 Apr 2012 10:52**

and, are the axis smooth if you watch them once at a time, without the mosaic ?

Posted: **25 Apr 2012 09:34**

yes, no problem when i open the video streams in vlc player.

in mosaic there are the following debug messages (repeated)

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main warning: original picture size is undefined
mosaic debug: too late picture for 1 (211704)
mosaic debug: too late picture for 3 (175471)
mosaic debug: too late picture for 4 (210164)
mosaic debug: too late picture for 2 (198448)

next i saved the video streams to disc and created a mosaic from the files - the same result.

at last i tried another video from my digicam - also the same result.

???

Posted: **22 Jul 2012 10:27**

Still I have no solution for my problem.

Is there anyone who uses a 2x2 mosaic with VLC > 2 with no problems?

Posted: **21 Nov 2012 17:56**

I have same problem - can't get smooth picture, debug message (input udp, output HLS):

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[0x185ef68] main mux warning: late buffer for mux input (279804)                                                                                                                                    [181/27674]
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (336845)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (375007)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (443316)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (457252)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (444913)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (424237)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (404860)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (383959)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (386447)
[0x1cfa868] mosaic filter debug: too late picture for 1 (1509)
[0x1cfa868] mosaic filter debug: too late picture for 3 (21528)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (362164)
[0x1cfa868] mosaic filter debug: too late picture for 1 (1509)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (361919)
[0x1cfa868] mosaic filter debug: too late picture for 1 (41509)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (373842)
[0x1cfa868] mosaic filter debug: too late picture for 1 (1509)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (342681)
[0x1cfa868] mosaic filter debug: too late picture for 1 (41509)
[0x1cfa868] mosaic filter debug: too late picture for 3 (21528)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (311310)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (362217)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (398106)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (377570)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (374457)
[0x18a8798] main subpicture warning: original picture size is undefined
[0x185ef68] main mux warning: late buffer for mux input (402198)
[0x1cfa868] mosaic filter debug: too late picture for 0 (9450)
[0x18a8798] main subpicture warning: original picture size is undefined

With --network-caching=2000 error "late buffer for mux input" disappear, but picture not smooth ( not full picture, only differrent inputs)

Posted: **12 Dec 2012 10:00**

I found a solution for this problem:

Instead of using

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setup test option image-fps=25

you have to use

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setup test option image-fps=25/1

Now it works perfect! Don't know why, but....

Posted: **13 Dec 2012 00:22**

This is weird, indeed.

Posted: **13 Dec 2012 15:54**

Accidently I found this hint in preferences:

Perhaps the documentation must be adjusted.

Posted: **31 Dec 2012 12:07**

what will be the maximum frame rate

Posted: **13 Mar 2013 17:41**

I found a solution for this problem:

Instead of using

Code: Select all
setup test option image-fps=25
you have to use

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setup test option image-fps=25/1
Now it works perfect! Don't know why, but....

This fixed my isssue too. Thank you.

The VideoLAN Forums

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Mosaic - I can't get a smooth picture

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