Bug Report - sync issues when speeding up more than 1000%

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Tony359

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Bug Report - sync issues when speeding up more than 1000%

PostMon Mar 24, 2025 1:14 pm

I hate to create a second thread about this issue but the original one has "SOLVED" in the title and I doubt it will attract much attention from BMD.

This is a continuation of this thread: viewtopic.php?f=21&t=197713

Basically when speeding up a clip more than 1000%, the sound ends up out of sync.
This has been going on for quite some time. Still happening on 19.1.3.

When contacted, BMD support claimed they could not replicate the issue but people I know have confirmed this is happening - and the other thread is proving that.

Please see a clear example on the below video. @Peter Chamberlain, any chance you could at least acknowledge this issue and maybe confirm that this is on your list?

Thanks!

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morefunmakingit

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Re: Bug Report - sync issues when speeding up more than 1000

PostMon Mar 24, 2025 1:39 pm

Having exactly the same issue here. This has been a very annoying bug for a really long time now. So long in fact that I just got used to working around it until Tony reminded me it was actually a bug!
Clear evidence below

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Peter Chamberlain

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Re: Bug Report - sync issues when speeding up more than 1000

PostMon Mar 24, 2025 1:41 pm

Can u provide a link to the source clip?
And your drp?
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morefunmakingit

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Re: Bug Report - sync issues when speeding up more than 1000

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Tony359

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Re: Bug Report - sync issues when speeding up more than 1000

PostMon Mar 24, 2025 2:26 pm

Thanks Peter for chiming in.

Here is the drp and the clip - sorry it's a large download.

https://1drv.ms/u/c/0f215fbb023f1ee9/ES ... w?e=zMu7WK

The clip is from a Sony ZV-E10, 4K, 30fps, 60Mbps. But to be honest I've always seen this bug with any content I've tried.

Let us know if you can replicate.
Thanks
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visinc

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Re: Bug Report - sync issues when speeding up more than 1000

PostMon Mar 24, 2025 2:51 pm

I have experienced this same problem across several versions of Resolve and multiple media types, dating back several years. Most recently media from a Canon C300 mkII, Sony FX30, and Sony FX9 - all industry standard cameras.

This should be very simple for BMD to replicate (take literally any media and speed it up a lot), and I hope they finally put in the work to solve it.

Thank you for highlighting this incredibly irritating bug again, Tony359!
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Tony359

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Re: Bug Report - sync issues when speeding up more than 1000

PostTue Apr 01, 2025 1:33 pm

Peter,

Any chance you could acknowledge this bug please? or at least the reception of the data that you requested.

Thanks
Antonio
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Re: Bug Report - sync issues when speeding up more than 1000

PostThu Apr 10, 2025 11:09 pm

Still waiting for some sort of acknowledgment of the data that was provided on request.
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Re: Bug Report - sync issues when speeding up more than 1000

PostMon Jun 30, 2025 1:01 pm

This persists in DR 20.0.1
DaVinci Resolve Studio 19.1.3
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