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audio glitches and phantom noises show up when I nest a 23.98 timeline into 59.94 timeline

Enthusiast ,
Jul 08, 2024 Jul 08, 2024

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I've had this issue for MONTHS now and regret not reporting it earlier. I often cut features for TV in a 23.98 sequence. And it sounds fine on that timeline. Then when I go to nest it in a 59.94 sequence for export, and hit play on the timeline, there are random audio glitches / phantom noises that show up in the 59.94 sequence that definitely ARENT in the 23.98 sequence. (and yes those 'phantom' glitches do show up in my MXF export as well).  And this happens with almost every project I work on for the past year. It's really problematic. I usually have to jump through hoops and move some audio around by frames just to make it go away. I don't feel comfortable posting a public video but if Adobe would privately message me, I'd gladly show you the screen record I did this morning to showcase the issue.  I could tell you my current premiere version but I've gone through several versions of premiere over the past year and its been prevalent throughout. I've even had 2 different kinds of computers in the past year and the issue shows up on both computers. I'm on a mac studio at the moment.

 

on this particular instance, its occuring during an audio dissolve. I cant tell any more if these are exponential dissolves or normal gain dissolves since this latest version did this big overhaul visually. if i click on the dissolve and look in the effects controls it says custom dissolve. i dont remember applying any "custom" dissolve. so how can i tell if this was originally an exponential fade? because what if the exponential fades are causing the issue? I need to explore deeper

Deleting the media Cache and restarting the computer does not rectify the issue.

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correct answers 1 Pinned Reply

Adobe Employee , Jul 08, 2024 Jul 08, 2024

Hello @rachelcenter.

I read your bug report. Thanks for filing. Can you provide more technical details so the team can reproduce your issue? See, How do I write a bug report?

 

Sorry for the frustration.

 

Thanks,
Kevin

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Adobe Employee ,
Jul 08, 2024 Jul 08, 2024

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Hello @rachelcenter.

I read your bug report. Thanks for filing. Can you provide more technical details so the team can reproduce your issue? See, How do I write a bug report?

 

Sorry for the frustration.

 

Thanks,
Kevin

Kevin Monahan - Sr. Community & Engagement Strategist – Pro Video and Audio
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Enthusiast ,
Jul 09, 2024 Jul 09, 2024

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Kevin, did you revise the bug report per my message to you a few weeks ago where the article asks for information that mac no longer provides? Also, was adobe able to fix this forum yet? Remember I tried to post a bug report last time and it told me I had illegal html in my message when I really didnt? And I had to post a screenshot. I guess I'll find out in a few minutes

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Enthusiast ,
Jul 09, 2024 Jul 09, 2024

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Use the template below to provide us with information: 

  • Issue - when nesting a 23.98 timeline in a 59.94 timeline, you can hear audible phantom glitches that dont exist on the 23.98 timeline. glitches that I believe might be caused by exponential audio fades.
  • Adobe Premiere Pro version number: 24.4.1 (build 2)
  • Operating system - macOS Sonoma 14.5 (but this issue has been prevalent for at least 6+ months now when I've had other previous operating systems I believe).
  • System Info: CPU, GPU, RAM, HD:
    • CPU - i dont see "cpu" listed under "hardware overview" on mac.

    • GPU and Driver Version - i dont see "gpu" listed under "hardware overview" on mac. 

    • RAM - i dont see "ram" listed under "hardware overview" on mac. 128gb memory.

    • Hard Drive (and, if external, how the drive is connected: USB 3, Thunderbolt, etc.) - right now I'm using a sanDisk 4TB Extreme Portable SSD with USB C cable, but its possible ive used other external hard drives in the past when experiencing this issue.

  • Video format: it's a 5-6 camera shoot. some of the cameras are mp4 codec h264, and some are MXF files (codec in premiere says ai13)
  • Workflow details: I'm working in a 23.98 sequence with 5 or 6 cameras stacked on top of each other. not using the official multicam technology. then nesting in a 59.94 sequence.  sequence settings for 23.98 sequence are as follows: editing mode cusom, timebase 23.976, frame 1920x1080, square pixels, no fields, working color space rec 709, audio stereo 2 channel sample rate 48000hz, display format is audio samples, preview file format i-frame only mpeg. checkmarked is composite in linear color.
  • Steps to reproduce - (Very important!) Exact steps, in a numbered list, that are needed to reproduce the problem. 
  • Expected result - expected result is not hear any phantom audio that doesnt exist on the 23.98 timeline
  • Actual result on the 59.94 timeline im hearing weird audio glitches that dont exist on the 23.98 timeline. this happens in almost every broadcast tv project that I do. its been happening for months. I've even had this problem since at least 11/11/23 when trying to output for my producer at 2 in the morning (and its now 7/9/24). i had to go back into the 23.98 sequence and keep moving the exponential audio dissolve around by frames or delete a few frames just to make the issue less prevelant
  • To the Adobe Employee reading this bug report, please ask @Kevin-Monahan to privately share the dropbox video with you that I had shared with him. It's a screen record of the issue.

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Enthusiast ,
Jul 23, 2024 Jul 23, 2024

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@Kevin-MonahanI'm on the latest version/update of premiere. Version 24.5.0 (Build 57) and had the audio glitch issue again yesterday. I'm almost 100% convinced the glitch is stemming from certain audio dissolves either being too short or too long. Possibly even exponential fade being the issue.

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