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Posted: **10 Jan 2017 18:43**

Good morning,

I have a question about specifying the individual broadcast inputs resolution for a mosaic. Currently, when I load a static file twice as two independent inputs, I'm seeing them at a fixed resolution. I set the resolution in the output, but it doesn't affect the resolution. I read:

"Since vlc 2.0, the mosaic options must be passed in the command line, and not in the vlm file."

[0]

How would I pass resolution specific settings for the individual video inputs? I've attempted the options to no avail. Any help is appreciated. Thank you.

Code: Select all

void Mosaic::configure_double_input_mosaic()
{

	/*
	new   Camera1 broadcast enabled
	setup Camera1 input     "C:\root\src\vlc_player_project\vlc_streaming_server_windows\res\vid\test.flv"
	setup Camera1 output    #mosaic-bridge{id=1,width=512,height=384}
	*/
	// Create a new instance of libVLC.
	vlc = libvlc_new(0, NULL);

	char* input_options[] = {"width=800",  "height=450"};

	libvlc_vlm_add_broadcast(vlc, "FirstCam", "C:\\root\\src\\vlc_player_project\\vlc_streaming_server_windows\\res\\vid\\test.flv", "#duplicate{dst=mosaic-bridge{id=1,width=200,height=200},select=video,dst=bridge-out{id=1},select=audio}", 0, NULL, true, 0);
	libvlc_vlm_add_broadcast(vlc, "SecondCam", "C:\\root\\src\\vlc_player_project\\vlc_streaming_server_windows\\res\\vid\\test.flv", "#duplicate{dst=mosaic-bridge{id=2,width=900,height=900},select=video,dst=bridge-out{id=2},select=audio}", 0, NULL, true, 0);
	
	/*
	new   mosaic broadcast enabled
	setup mosaic input     test.flv
	setup mosaic option    image-fps=25/1
	setup mosaic option    image-duration=-1
	setup mosaic output    #transcode{sfilter=mosaic,vcodec=mp4v,vb=8500,fps=25,scale=1}:bridge-in{delay=400,id-offset=100}:duplicate{access=udp,url=localhost,dst=display}
	*/

	char* mosaicOptions[] = { "image-fps=25/1", "image-duration=-1", "mosaic-height=900", "mosaic-width=1600", "mosaic-alpha=255", "mosaic-xoffset=250", "mosaic-keep-picture --no-media-library --mosaic-rows=2 --mosaic-cols=2 --mosaic-position=0 --mosaic-order=\"1,2\" --mosaic-position=1"  };
	//libvlc_vlm_add_broadcast(vlc, "mosaic", quadruple_input_background_path, "#transcode{sfilter=mosaic,vcodec=mp4v,vb=800,fps=25,scale=1}:bridge-in{delay=400,id-offset=100}:duplicate{dst=http{dst=:56789/Mosaic},dst=display}", 1, mosaicOptions, true, false);
	
	libvlc_vlm_add_broadcast(vlc, "mosaic", quadruple_input_background_path, "#transcode{sfilter=mosaic,vcodec=mp4v,vb=8500,fps=25,scale=0.25}:bridge-in{delay=400,id-offset=100}:duplicate{dst=http{dst=:56789/Mosaic},dst=display}", 0, NULL, true, 0);
	/*
	control Camera1 play
	control Camera2 play
	control mosaic play
	*/

	libvlc_vlm_play_media(vlc, "FirstCam");
	libvlc_vlm_play_media(vlc, "SecondCam");
	libvlc_vlm_play_media(vlc, "mosaic");

}

[0] https://wiki.videolan.org/VLC_HowTo/Make_a_mosaic/

Posted: **10 Jan 2017 20:50**

FYI to anybody else that has the same problem as me.

I ended up figuring out how to add the command line switched to the mosiac. The trick is to add the {} brackets after mosaic in the transcode command. There you can set your parameters. Hope this helps somebody.

Code: Select all

libvlc_vlm_add_broadcast(vlc, "mosaic", double_input_background_path, "#transcode{sfilter=mosaic{width=1600,height=450,mosaic-height=450, mosaic-width=1600, mosaic-alpha=255, mosaic-xoffset=0, mosaic-keep-picture, no-media-library, mosaic-rows=1, mosaic-cols=2 , mosaic-position=0, mosaic-order=1,2, mosaic-position=1},vcodec=mp4v,vb=2000,fps=15}:duplicate{dst=display}", 2, mosaicOptions, true, false);

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Video Resolution of Mosaic Inputs with libVLC

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