The VideoLAN Forums

Hi

Should netsync be able to work on one pc to syncronize multiple videos on multiple monitors?

When I run a slave video it does not sync and just plays a pixelated stuttering mess.

http://wiki.videolan.org/Documentation_ ... es/netsync

thanks semi

Depends on the video format. Netsync is meant to sync the same video, not different ones.

If input slave fails, it's likely netsync will fail too

Ive got it working by running the slaves first. They then pause when the master is run and wait until it catches up. It does not work at all the other way around, for me, on 1 or more pcs.

"vlc.exe path" "myfilepath1.mpg" --control netsync --netsync-master-ip 192.168.0.1
"vlc.exe path" "myfilepath2.mpg" --control netsync --netsync-master-ip 192.168.0.1

then the master

vlc "myfilepath3.mpg" --control netsync --netsync-master

This works on one pc to within half a second synchronized accuracy

Is it possible to increase this time sync accuracy ?
Does the sync clock come from the keyframes, the multiplexer or pid or something else?

thanks a lot

I have got it to work really well with .ts mpeg2 multiplexing exported from adobe media encoder with constant bit rate

This code plays 3 different videos with the exact same length on one pc, multi screen video installation. The pc uses ip 127.0.0.1 instead of network ip. Written in long form for idiots like me.

"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe" "D:\renders video\right.m2t" --control netsync --netsync-master-ip 127.0.0.1
"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe" "D:\renders video\center.m2t" --control netsync --netsync-master-ip 127.0.0.1
"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe" "D:\renders video\left.m2t" --control netsync --netsync-master

This code does the same but sends my audio to separate outputs on my m-audio sound card

"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe" "D:\renders video\right.m2t" --control netsync --netsync-master-ip 127.0.0.1 --directx-audio-device-name="Line 5/6 (M-Audio FW 410)"
"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe" "D:\renders video\center.m2t" --control netsync --netsync-master-ip 127.0.0.1 --directx-audio-device-name="Line 3/4 (M-Audio FW 410)"
"C:\Program Files (x86)\VideoLAN\VLC\vlc.exe" "D:\renders video\left.m2t" --control netsync --netsync-master --directx-audio-device-name="Line 1/2 (M-Audio FW 410)"

If you paste it all into the windows command prompt ,with a return included, it will all play with one paste.
They need to be dragged and doubled clicked on to make them full screen on the correct projectors/monitors

hi semiconductor.

i tried the command line that you suggested but i don't see the use of it.

it opens three (in my case two) separate VLCs and when i pause one video the other still plays. (unlike with input-slave)
and by the way if i leave away the --control netsync commands it still does the same .. opens two separate videos.

so ether i did something wrong or netsync has to be use somehow differently.