Synchronization problems in show mode

Ask a generic question about the usage of QLC+, not related to a particular operating system
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ponge
Posts: 24
Joined: Tue Jan 14, 2020 6:34 am
Real Name: Pascal FRANCOIS

Hello !

I have a big problem in show mode. Music and light are not synchronized every time I start show mode. Sometimes it works, sometimes it’s a few ms...on the same shox without any modification !

If you have the solution, it’s urgent I prepare a show!

thank you!
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GGGss
Posts: 3052
Joined: Mon Sep 12, 2016 7:15 pm
Location: Belgium
Real Name: Fredje Gallon

The show portion of QLC+ is not a timecode solution... unfortunately timing will be a tad off every time you start it.
This can be observed mainly on the Windows platform.
If you embed your audio inside a video format (black screen is oke), it was reported that the show sync problems were better...
If timing is crucial, I'm afraid you will have to stick to a long chaser, where timing can be right to the ms. (A lot of work dough!)
All electric machines work on smoke... when the smoke escapes... they don't work anymore
ponge
Posts: 24
Joined: Tue Jan 14, 2020 6:34 am
Real Name: Pascal FRANCOIS

GGGss wrote: Mon May 17, 2021 9:50 am The show portion of QLC+ is not a timecode solution... unfortunately timing will be a tad off every time you start it.
This can be observed mainly on the Windows platform.
If you embed your audio inside a video format (black screen is oke), it was reported that the show sync problems were better...
If timing is crucial, I'm afraid you will have to stick to a long chaser, where timing can be right to the ms. (A lot of work dough!)
Thanks for your answer. What do you mean by a long chaser ? is it a alternative to show mod ? can you give some information or link to undestand ?

Thanks !
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GGGss
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Location: Belgium
Real Name: Fredje Gallon

a long chaser... all needed steps for your show are put inside a chaser.
The show mode is actually a collection of steps if you like, so each step can also be a step inside a chaser.
All electric machines work on smoke... when the smoke escapes... they don't work anymore
ponge
Posts: 24
Joined: Tue Jan 14, 2020 6:34 am
Real Name: Pascal FRANCOIS

GGGss wrote: Tue May 18, 2021 8:31 am a long chaser... all needed steps for your show are put inside a chaser.
The show mode is actually a collection of steps if you like, so each step can also be a step inside a chaser.
even the music inside ?

An oather question, do you think bluetooth connexion can be introduce some dysynchronization ?
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GGGss
Posts: 3052
Joined: Mon Sep 12, 2016 7:15 pm
Location: Belgium
Real Name: Fredje Gallon

Music starts in parrallel to the chaser (use a collection for that)
Bluetooth does have latency... depending one the interface between 5..40ms (never actually measured it)
All electric machines work on smoke... when the smoke escapes... they don't work anymore
ponge
Posts: 24
Joined: Tue Jan 14, 2020 6:34 am
Real Name: Pascal FRANCOIS

one solution works perfectly, it is to put a video file in place of the sound file, but not in MP4 but MPG!! no more synchronization problems, up to ms!

Finally!!! It’s great (even if it’s a bug!)
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