Audio Output Track 2 crackling

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TomasM

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Audio Output Track 2 crackling

PostSun Aug 04, 2019 11:00 am

I need to deliver MXF with 4 audio channels (2 identical stereo pairs).
When outputing 2 audio tracks (2 stereo pairs), the output in second audio track becomes corrupted (crackles). Adding second Main Bus doesn't help.
Sub Bus doesn't help either.
I've confirmed this with other Windows machine.
This "effect" is exaggerated when using any plugin (i.e. Limiter) on Main1 Bus.

Image

Image

Artifacts are visible in waveform and clearly audible.

Has anyone experienced this bug and maybe found a solution?

I am willing to switch from Premiere to Resolve and this bug (along with other bug - black artifacts in Sony XDCAM mpeg2 output) is a real deal breaker as I have to deliver MXF XDCAMHD with 4 audio channels.

Resolve 15 apparently also has this bug.

The project is 1920x1080 25p. Source footage - ProRes4444, MXF XDCAMHD, Audio - 48000 16 and 24 bits

My setup:
Resolve 16b07
Windows 10 Pro
Core i7 9700K
RAM 64GB 3200GHz
Gigabyte Z390 Designare
OS: Samsung 970EVO 250GB
Cache: Samsung 970EVO 250GB
Projects: Samsung 860 EVO 2TB
Resolve 16.1.2 Studio | WIN 10 Pro | Core i7 9700K | RTX2070Super 8GB | RAM 64GB | 2x 970EVO 250GB | 860 EVO 2TB
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Peter Chamberlain

Blackmagic Design

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Re: Audio Output Track 2 crackling

PostMon Aug 05, 2019 3:05 am

You didn't mention the GPU which is extremely important for the image issue..
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TomasM

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Re: Audio Output Track 2 crackling

PostMon Aug 05, 2019 4:43 am

Yes, sorry.
GPU: MSI Geforce RTX 2070 Super (8 GB)
Drivers updated (DCH Studio version).
Resolve 16.1.2 Studio | WIN 10 Pro | Core i7 9700K | RTX2070Super 8GB | RAM 64GB | 2x 970EVO 250GB | 860 EVO 2TB
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Charles Bennett

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Re: Audio Output Track 2 crackling

PostMon Aug 05, 2019 1:17 pm

As you can see artifacts in the waveform, are you sure that the original audio is not corrupt?
Resolve 16.2.0055 (free)
Dell XPS 8700 i7-4790 @ 3.60GHz, 24GB RAM, Palit GTX1060/6GB (441.66 Studio), Win 10 Home-18362, 2 Screens
Pro Tools 2018.4
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TomasM

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Re: Audio Output Track 2 crackling

PostMon Aug 05, 2019 1:27 pm

Yes, absolutely. We've confirmed this behaviour on a completely different Windows system with different source file.
Resolve 16.1.2 Studio | WIN 10 Pro | Core i7 9700K | RTX2070Super 8GB | RAM 64GB | 2x 970EVO 250GB | 860 EVO 2TB
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TomasM

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Re: Audio Output Track 2 crackling

PostFri Aug 16, 2019 8:07 am

So the problem still not solved in DR 16.0
Resolve 16.1.2 Studio | WIN 10 Pro | Core i7 9700K | RTX2070Super 8GB | RAM 64GB | 2x 970EVO 250GB | 860 EVO 2TB
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Peter Chamberlain

Blackmagic Design

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Re: Audio Output Track 2 crackling

PostFri Aug 16, 2019 10:10 am

I guess we need a sample project and the sample media clip to try to repo
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Peter Chamberlain

Blackmagic Design

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Re: Audio Output Track 2 crackling

PostWed Aug 21, 2019 8:12 am

Thanks.. we see this now.
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TomasM

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Re: Audio Output Track 2 crackling

PostThu Aug 29, 2019 11:35 am

Upgraded to Studio. Now hoping for the fix :)
Resolve 16.1.2 Studio | WIN 10 Pro | Core i7 9700K | RTX2070Super 8GB | RAM 64GB | 2x 970EVO 250GB | 860 EVO 2TB
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Vit Reiter

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Re: Audio Output Track 2 crackling

PostThu Aug 29, 2019 12:03 pm

Similar behaviour is if I insert two plugins on bus. Exported audio has cracks.
My resolve is insert effect plugins to timeline track (not to bus) but I'd like preferred correct behaviour of DaVinci. I hope Blackmagic developers fix it.
DaVinci Resolve 16.2 Studio
Mac Pro 2013, AMD FirePro D700, 64GB RAM, macOS Mojave 10.14.6
iMac 2017, Radeon Pro 575, 24GB RAM, macOS High Sierra 10.13.6

Film Editor, Colorist, DIT, Encoding technician
linkedin.com/in/vít-reiter-film-editor
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TomasM

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Re: Audio Output Track 2 crackling

PostMon Sep 16, 2019 5:43 am

16.1 Beta3 has fewer audio glitches in second stereo pair, but they are still present.
Resolve 16.1.2 Studio | WIN 10 Pro | Core i7 9700K | RTX2070Super 8GB | RAM 64GB | 2x 970EVO 250GB | 860 EVO 2TB
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TomasM

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Re: Audio Output Track 2 crackling

PostWed Oct 23, 2019 7:59 am

This bug seems to be fixed in 16.1
BM, thank you!
Resolve 16.1.2 Studio | WIN 10 Pro | Core i7 9700K | RTX2070Super 8GB | RAM 64GB | 2x 970EVO 250GB | 860 EVO 2TB
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marcelofernandezmusic

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Re: Audio Output Track 2 crackling

PostFri Feb 21, 2020 10:28 pm

Are you guys still getting this bug? I'm on the latest version, 16.1.2. I tried setting the Render Speed to 50 but still getting some crackling, tried other Render Speed settings with no luck as well. I'm on Windows and my project uses Compound Clips (I think the bug is related to this).
Thanks!

Update: I could solve the issue, on my project I had "Cross Fade 0 dB" audio transitions connecting every audio, after I removed all those audio transitions the crackling was gone.
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TomasM

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Re: Audio Output Track 2 crackling

PostTue Feb 25, 2020 6:01 am

No crackling since 16.1
But I didn't test it with crossfades.
Resolve 16.1.2 Studio | WIN 10 Pro | Core i7 9700K | RTX2070Super 8GB | RAM 64GB | 2x 970EVO 250GB | 860 EVO 2TB
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Vit Reiter

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Re: Audio Output Track 2 crackling

PostWed Mar 25, 2020 3:32 pm

Vit Reiter wrote:Similar behaviour is if I insert two plugins on bus. Exported audio has cracks.
My resolve is insert effect plugins to timeline track (not to bus) but I'd like preferred correct behaviour of DaVinci. I hope Blackmagic developers fix it.
In 16.2 audio has cracks again if you put two plugins on bus.
That's a bad joke!
DaVinci Resolve 16.2 Studio
Mac Pro 2013, AMD FirePro D700, 64GB RAM, macOS Mojave 10.14.6
iMac 2017, Radeon Pro 575, 24GB RAM, macOS High Sierra 10.13.6

Film Editor, Colorist, DIT, Encoding technician
linkedin.com/in/vít-reiter-film-editor

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