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Author Topic: Dolby Digital Latency  (Read 1837 times)

flac.rules

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Dolby Digital Latency
« on: September 22, 2017, 06:18:29 am »

This is correct. These are the two big features not currently working, which need to be rebuild since they relied on old things that can't be easily updated to 64-bit.

I hope the latency with dolby digital can be improved with the rebuid, it is now about 1 second(?)

Regarding a 64-bit version, that is great news, and good for the program, keep up the good work!
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Hendrik

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Re: Dolby Digital Latency
« Reply #1 on: September 22, 2017, 07:09:39 am »

I hope the latency with dolby digital can be improved with the rebuid, it is now about 1 second(?)

It'll work exactly the same way it does now.
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blgentry

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Re: Dolby Digital Latency
« Reply #2 on: September 22, 2017, 09:09:33 am »

I hope the latency with dolby digital can be improved with the rebuid, it is now about 1 second(?)

I think you are mistaken.  If this was true everyone would be complaining about it.  One full second of latency would make watching movies a terrible experience.  Something else must be going on with your system.  Perhaps you can provide some details of what you are seeing and your system configuration.

Brian.
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Hendrik

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Re: Dolby Digital Latency
« Reply #3 on: September 22, 2017, 09:33:16 am »

You could have 10s latency, and movie playback would still be fine - because file-based playback can basically compensate for any latency, as long as you have enough memory to read ahead far enough.
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blgentry

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Re: Dolby Digital Latency
« Reply #4 on: September 22, 2017, 11:05:03 am »

Maybe I don't understand what Elvis is describing.  I figured that anyone reporting latency here would be saying that audio and video were out of sync by some amount.  Maybe he's describing something else.

Brian.
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Hendrik

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Re: Dolby Digital Latency
« Reply #5 on: September 22, 2017, 11:46:13 am »

You would notice if you use a live source, like WDM.
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DeaneG

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Re: Dolby Digital Latency
« Reply #6 on: September 22, 2017, 06:16:26 pm »

For me, Dolby Digital introduced about 150ms mismatch between audio and video when watching TV. Looking forward to seeing how it turns out running 64 bits.
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flac.rules

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Re: Dolby Digital Latency
« Reply #7 on: September 23, 2017, 04:30:11 am »

You would notice if you use a live source, like WDM.

Bingo. That is where my main problem with the latency lies. But anyway, thanks for the feedback, although not what i hoped, it is clear :)
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millst

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Re: Dolby Digital Latency
« Reply #8 on: September 23, 2017, 10:37:30 am »

Each AC3 frame represents over 30ms of sound. That by itself is enough for many people to notice lip sync issues. It's always likely to be problematic in a real-time playback chain.

-tm
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