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M
madaspy
Participant
April 30, 2020
Question

Audio glitch with long time with a large number of edits.

  • April 30, 2020
  • 2 replies
  • 558 views

I am getting an audio glitch in premiere where using a long multicam sequence with 8 audio sources will not playback audio when imported in to a timeline and making100's of edits of said clip.

 

If you take that multicam sequence without a large number of edits, you get audio playback as expected. 

 

As a note, I am able to get play back of audio when I delete a majority of the clips. I find that a timeline with 10s of edits with a timeline duration shorter than 1 hour seems to play back just fine. But 1 hour is not practical when I have 5 multicam clips that are 10 hours each.  

 

My main audio sources used in my multicam sequence are detailed below in order of importance:

two 32bit 96000hz tracks

Six 24bit 48000hz tracks

 

I have set my timeline to 96000hz and 48000hz and i get the same issue.

 

Below is a video detaining my issue. https://www.youtube.com/watch?v=ETGpZCFqc_I 

There are two parts to this. First part of the video shows the issue, second shows how I remove the gaps between clips, and third shows of the glitch in a slightly differt manner. Click here for that video

 

Let me know what you all think!

Computer:

Windows 10

Intel x7900

64gb Ram

2x Geforce 1080 GTX

OS SSD 1tb Samsung 960pro NVMEFootage Drive: 48TB 4 drive RAID 0 🙂 Its all backed up.

This topic has been closed for replies.

2 replies

Ann Bens
Community Expert
Ann BensCommunity Expert
Community Expert
May 4, 2020

Have your tried Render Audio.

 

BTW i have used raid 0 on 7200 HDDs for years (with a back up) never had any issues.

M
madaspyAuthor
Participant
May 5, 2020

I have tried render audio but it didnt work. To note, it took about an hour to render audio.

Ann Bens
Community Expert
Ann BensCommunity Expert
Community Expert
May 5, 2020

Can you disable one graphics card?

P
Community Expert
Phillip HarveyCommunity Expert
Community Expert
April 30, 2020

That indeed seems strange. Have you tried deleting media cache and previews? You have a long project so it may take a while to recreate them, but that may be one thing to try.

Other things to try when you're really up against a confusing situation: paste the edit into a new sequence, and a step beyond that is to import it into a new project. I hope you get some other good tips from some of the more technically savvy peeps in here.

I have a completely unrelated question and sorry to change the subject from your bug, but what are you using for your RAID drive? (I was just looking at RAID and NAS solutions last night.)

M
madaspyAuthor
Participant
May 4, 2020

Sorry for the late reply, I thought i'd get a notfication when somebody posted.

 

I have deleted my media chache, I've done it for the entire project and for the audio files. But I still have the same issue.

 

I have also, been able to recreate the issue when creating a new project importing that day's worth of clips and audio, and reconstructing the timeline as shown in the video. 

 

Using just the 24bit 48000hz audio seems to allow for a longer timeline. So it is possible that premiere needs sigficantly more resources when using 32bit 96000hz audio.

 

As far as the RAID. I am using a Areca 1203-4 card with 4x 12tb 7200rpm drives in RAID 0. I am getting about 750-800MBs with this card, which is what I would expect from HDDs. These cards are extremly old, but it still works and I have not had any real issues with it. Additionally, I reallllllllly don't recomend running RAID 0. In fact DON'T do what I am doing. I am doing it because I wanted the Speed and capacity of RAID 0. I have all of my content being activly backed up on to a number of WD Red drives using the software SyncBack SE. 

 

I wish I could recomend some hardware solutions, but I have not activly looked at anything in the past 7 years.

 

 

 

 

 

P
Community Expert
Phillip HarveyCommunity Expert
Community Expert
May 4, 2020

Thanks for that info. I really wish I had more to try on that audio issue. I don't think I've ever seen that before.

I don't do a lot of MC editing, but when I do I usually only have the video in the multicam sequence and keep the original audio in my timeline. Part of this is because it's how I learned to do it quite a while back, and despite MC advancements I still just do it that way, the other part is that I'm used to trying to keep audio in a good form for sending to an audio engineer to work on, and having audio in inside of nests I assume would not go well when creating an OMF. So I guess I'm wondering if the nesting of the audio is adding an extra opportunity for something to go wrong there.

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