Audio delay/offset option in DCP Player?

Anything and everything to do with DCP-o-matic.
giordanistudio
Posts: 2
Joined: Sat Aug 30, 2025 7:51 am

Audio delay/offset option in DCP Player?

Post by giordanistudio »

Hi everyone, I’m using DCP Player on a Mac and would like to run it with a projector. As expected, there’s an audio delay when sending the signal to the projector (usually something in the range of 100–200 ms). Is there currently any way to offset the audio in DCP Player? It would be very useful if such a feature could be implemented in a future update. In the meantime, does anyone here who uses a Mac know of any alternative method or workaround to delay the audio for proper sync with the projector? Thanks a lot in advance!
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carl
Site Admin
Posts: 2852
Joined: Thu Nov 14, 2013 2:53 pm

Re: Audio delay/offset option in DCP Player?

Post by carl »

There isn't a control for that at the moment but it would not be so hard to add. I'll see what I can do.
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giordanistudio
Posts: 2
Joined: Sat Aug 30, 2025 7:51 am

Re: Audio delay/offset option in DCP Player?

Post by giordanistudio »

Dear Carl, you’re truly amazing. An audio delay option would be very useful in setups with a projector. If you manage to implement it, I’ll certainly make sure to show my appreciation 😉
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IoannisSyrogiannis
Posts: 309
Joined: Mon Nov 13, 2017 8:40 pm
Location: Iceland

Re: Audio delay/offset option in DCP Player?

Post by IoannisSyrogiannis »

In the meantime, you might want to give a go to SimpleDelay of Static Z Software or Audio Hijack from Rogue Amoeba.
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cvila
Posts: 20
Joined: Tue Jul 16, 2024 11:54 am

Re: Audio delay/offset option in DCP Player?

Post by cvila »

If the audio is played back with a delay due to processing in the projector, should't the video be delayed in DOM to compensate?
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Carsten
Posts: 3010
Joined: Tue Apr 15, 2014 9:11 pm
Location: Germany

Re: Audio delay/offset option in DCP Player?

Post by Carsten »

We should have a slider that allows adjustment between positive and negative values. Usually, video delays should only be a few frames, but depending on the full video pipeline (e.g. video streaming encoders or rf transmission), it could be much more. Then sometimes audio may be transmitted through Bluetooth or streaming devices as well. This adjustment shoould probably go into prefs/Sound. Maybe it could even remember different settings for different devices?
Last edited by Carsten on Mon Sep 01, 2025 11:54 am, edited 1 time in total.
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IoannisSyrogiannis
Posts: 309
Joined: Mon Nov 13, 2017 8:40 pm
Location: Iceland

Re: Audio delay/offset option in DCP Player?

Post by IoannisSyrogiannis »

cvila wrote: ↑Sun Aug 31, 2025 1:54 pm If the audio is played back with a delay due to processing in the projector, should't the video be delayed in DOM to compensate?
I don't understand what kind of processing is taking place on PCM audio, but it doesn't matter. I misunderstood.
As far as I know and regretfully, none of the solutions I proposed can help you with video delay, until a solution is given via DCP-o-matic Player.
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