Delay when starting a video file

[ElSagnol]

Hi! I'm trying for the first time the Exhibitions I get from you today. OSC via Qlab is working super well, but there is about 4 sec latency when I send a osc trig. Is it possible to reduce that time? Thanks for your reply.

[magdesign]

The delay is caused by the stopall* script which is called before a video starts. I could make you a few custom scripts which do not call this function, but then you must be sure that nothing else is running before you start a video! How many custom videos do you like to trigger with OSC?

*stopall=> killing all running tasks to make sure there is no other video, mapper, audio etc. playing when you trigger something new

[ElSagnol]

I'm not sure for now, but I think 12 or 15 video on a pvj..

[magdesign]

Ok. I just made an update to CP 3.1.5 please download and install it (see here or here the 2nd one is the faster way). Then you will have 5 new OSC commands to trigger videos with names from 01 to 05 This ones will not do any stopall command and also will not send a syncing timecode, they will loop forever until you send a stopall command.

the osc commands are:

/startlesser01 /startlesser02 /startlesser03 /startlesser04 /startlesser05

and keep in mind to send: /stopall to stop the tasks

please report back if it is faster and if it fits your needs or do you want them to play only once? If you are happy I will write another 10 commands.

[ElSagnol]

Thanks for that, super.. For now It's doesn't work... I'll do again everything tomorrow to be sure... now I need to leave.. I'll report back asap but I can tell you I'll play only once each.

[magdesign]

ok. no worries, I should stop too :-) I need to make a proper update video for the PVJ Exhibition.

[magdesign]

I made you an update tutorial.... https://vimeo.com/467914288 https://vimeo.com/468128933

[magdesign]

Updated to CP 3.1.6 Now you have 10 new commands to trigger a video on the fast way without checking if there is something running. They only play once.

/starlesseronce01 /starlesseronce02 /starlesseronce03 /starlesseronce04 /starlesseronce05 /starlesseronce06 /starlesseronce07 /starlesseronce08 /starlesseronce09 /starlesseronce10

Hope this helps boosting the speed as you needed...

[ElSagnol]

Hi.. thanks for all that things

on x.5, /startlesser01 is working well, reduce to about 1 sec which is really better! can we reduce more do you think?

Updated on x.6 but no start at all with /starlesseronce01

although maybe you miss a "t" with the "/start..."

I'm looking where these sentence are implemented for now..

[ElSagnol]

I think I found why..in the picture... found in osc-control.js

I'm trying to test that now!

[magdesign]

Thanks for the feedback. Yes, there are some typos, was a bit too fast on the road this morning....

it should be: exec("/var/www/startlesseronce01"); and the command im osc then: /startlesseronce01

I fixed it and just uploading it to the server and to github. if you want to edit the file by yourself or replace just the osc_control.js its located in/var/www/sync/osc_control.js or make an alternative update as described in the video.

I think 1second is the fastest to go. But the theater in france is solving it like this: starting the video, then sending the /pause command, when they want to trigger on time, just send /pause again.

[ElSagnol]

Super.

After a tiny modification, it's working now!

Rename each sync/starlesseronce## in sync/startlesseronce## completed in each sync/startlesseronce## . a # was missing to evitate killing all tasks..

where can I upload to give you that? thanks for everything

[magdesign]

omg :-) great, thanks! its a shame that I again made a typo.... via email would be amazing.

[ElSagnol]

done

[magdesign]

Thank you!!