Audio "disappears" in Pr CS6

New Here ,
Jun 13, 2012 Jun 13, 2012

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I'm having a tremendous amount of trouble with a particular project in CS 6.

PC, Win 7 Ultimate

Nvidia 4000

32GB Ram

Red Rocket Card

CS6 Prod Premium

Sony MXF 4:2:0, 35Mbps files at 29.97p.

I have a project, that has about 20 clips in it.  I edited the piece, then pushed the video into After Effects to do "treatments" brought them back and want to make an output. 

However, when I play the timeline back, audio seems to disappear!  By that I mean, if you open the audio track, there are waveforms... however, when playing "over" that clip, no audio is heard! 

Take a look at the image:

Mitchwood.PNG

I've been experimenting with various work-arounds... I've used the "match frame" to find the exact spot in the source monitor... then I choose "repalce clip with source monitor" and the audio is replaced and plays... The trouble is when I fix one clip, another pops up.

Even wilder:  Some clips play a portion and then the audio stops suddenly in the middle of the clip!

I've shut down Pr and fired it back up.... that works sometimes... not always.

I've rebooted... works sometimes, not always...

Now the system is hanging up and crashing! 

I'm trying to get the project out!  I have the client in the room, and this is not looking good!  "Why don't you just use Final Cut Pro like everyone else?" 

I'm looking for answers and solutions.

Thanks,

Curt

Worth noting:  I had both CS6 and CS5.5 installed on the system when this project originated... I had so many system crashes, I decided to remove BOTH last weekend, run a registry cleaner and then reinstall CS6.  That seemed to clear up many issues, but not the dropping of the audio.

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Explorer ,
Jun 13, 2012 Jun 13, 2012

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Curt,

I've experienced the same thing.  I have a multi-camera sequence of spanned video clips (MXF format) with two video tracks, four mono audio tracks (each camera shoots L-R in mono, so two audio tracks per video) and a fifth stereo audio track for ambient audio.  I cannot re-recrate it on demand yet, but the audio of one of video tracks will just disappear as you describe.  I can see the wave form, but nothing plays.  I can scrub to the next clip and the audio returns, so it is just a clip.  I have not seen it drop out in the middle of a clip. 

I can close PPr and re-open it, and all the audio is back.  I think it may have something to do with the media cache, but I'm under deadline and I don't have the time to experiment right now.  I have not had any issues with the audio during the multi-camera edit or exporting the video (knock on wood).

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Adobe Employee ,
Jun 14, 2012 Jun 14, 2012

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Hi Dave,

I just talked with Curt and he appears to have fixed the issue by trashing his prefs and the PluginCache. Give it a try and see if it fixes the problem for you too. Hold down the Shift key and the Alt key (Windows) or the Shift key and Option key (Mac) and then lauch Premiere Pro. Holding down the Shift on launch deletes the PluginCache. Holding down the Alt/Option key on launch deletes the prefs.

If this does/doesn't work be sure to post back here.

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New Here ,
Jun 14, 2012 Jun 14, 2012

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Dave,

I think it should also be mentioned that when you Launch Premiere Pro... do it from the START MENU, and NOT a short cut!  Launch from the start menu, with Administrative Privledges... Keep the buttons HELD DOWN until the "splash screen" appears... that's how the whole deal works! 

Good luck!

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Explorer ,
Jun 14, 2012 Jun 14, 2012

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I'll give it a try, but right now I'm in the middle of a big project and PPr is behaving nicely.  Once it's finished in a few days I'll be ready to start another and I'll follow the above and see if happens again.

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Adobe Employee ,
Jun 14, 2012 Jun 14, 2012

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Yes. Exactly. Thanks Curt. I left out a subtle yet very important step. Thanks for the clarification.

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Participant ,
Jun 15, 2012 Jun 15, 2012

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Hello all

     I can confirm that there is a serious issue with .MXF files (Sony MXF XDCAM @25Mbps here). I've metioned it in another thread but since this is in topic i'll re-post my experiences. In CS5 there was no problem importing MXF files. No matter the duration the file imported in a snap. Now in CS6 it takes ages to import (not mentioning peak generation). This also happens when I import MXF in Media Encoder.

     As for the audio the problem is there... Randomly it eliminates the sound while the waveform is there. Restarting PP usually does the trick. If this doesn't work, I delete the Media cache (and have to wait to re-conform). Sometimes while all seems (and sounds) ok the exported file has no audio on the MXF portion of the edit...

     Please fix it as fast as possible since we rely on PP for our news edit and this issue is a major drawback in our work.

     I'm seriously considering in re-installing CS5.

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New Here ,
Jun 16, 2012 Jun 16, 2012

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Mitch,


I tried your methord and the problem still occours. Any Ideas?

Thanks.

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Adobe Employee ,
Jun 18, 2012 Jun 18, 2012

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Hi Chathuranga,

Have you tried deleting the Media Cache files? You can surgically delete the files for the specific clip by navigating the the Media Cache folder and searching them out individually... or you can just delete the entire folder and let them all rebuild.

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New Here ,
Jun 29, 2012 Jun 29, 2012

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Excume by my english. I am brazilian. I have the same problem. I did all the solutions presents in this forum but the problem didn't stop. I will like that adobe employees resolve this. In cs5.5 this problem didn't occurs.

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Explorer ,
Jun 29, 2012 Jun 29, 2012

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Yes, I'm still having the problem too.  I just started a new project and I tried the suggestions above with no joy.  I tried to interpret the two mono clips as one stereo and it still happens.  Tried dumping preferences and cache, no luck.  I seems to be related somewhat to multi-tasking on my computer, but I can't prove it.  It just seems that if I'm doing something else (like printing DVD's) while I'm editing, I'll lose the audio when I switch to the second application and switch back.  But I'm not sure.

I thought it was because the source MXF files are on a third drive on my system and it was going to sleep, but then I think I would also lose the video too, as if the media is offline.  I *never* lose video, just audio.

I've resorted to rendering and replacing the audio on my edited timeline after I make all my cuts.  But before I run it, I always reboot and just run the render and replace before anything else.  I then examine the resulting WAV file in the source monitor to see if all the audio is there.  A couple of times when I tried before I did the reboot step, I would see dead people sections of the waveform.  Trash it and try again.

But once I have a good rendered WAV file for the audio, then there's no problem.  I'm convinced it's related to the MXF file.  My timeline typically consists of two camera tracks with audio and a third audio track from a digital recorder which is WAV format.  I will lose one or both of the camera audio from time to time, but never the audio from the digital recorder.

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New Here ,
Jun 29, 2012 Jun 29, 2012

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I also installed two external sound cards to test whether the problem is hardware, but problem continued. Interesting that i have files on timeline .mov .mp3 .wav and these don't have problem. Only audio mxf files recordeds with sony pmwf3 that exports yours files in mxf op1 disappears.

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Participant ,
Jul 12, 2012 Jul 12, 2012

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Any updates on the issue? We've tried every workaround possible. But the problem isn't stable. Meaning opening a project might cause the audio issue and re-opening might bring back the audio... or might not...

My guess is that there's something wrong with the MXF importer. Long import times are a symptom too.

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New Here ,
Jul 12, 2012 Jul 12, 2012

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Yes, PLEASE FIX THIS

Same problem as the OP here, totally different system...my specs:

MAC (mid 2010) OSX 10.7.4

2x2.93 6-Core Intel Xeon

NVIDIA Quadro 4000 (only common element)

24 GB RAM

Using XDCAM HD clips

I've done the make a .aif file after clips are editied, which is a sad solution for me as clients always change their minds. It seems that PR is just not handling the MXF audio correctly. Of the several issues I am having with PR this is the one causing me to think "deal breaker"...the randomness of how this happens makes it impossible to replicate other than saying just edit some MXF clips and it will happen.

I am currently using some clips for a new project (not giving up yet) that I used "import" from my PDW U1 instead of "export"...which puts the clips in a mov wrapper and the audio is now lpcm...after a couple of hours of editng it is still working with only one odd audio incident in the source monitor, which is a different glitch.

I just hope the engineers are working to fix this (and other problems), and not push out CS7...PR could be a wonderful editor IF it could be stable!!

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New Here ,
Jul 13, 2012 Jul 13, 2012

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Curt,

Im convinced that this is a bug in CS6. The issue I am having is more or less identical to yours: Im using XDCAM HD422 and IMX Pal 25P footage. In both cases, some clips will randomly and apparantly arbitrarily stop playing back, despite as you point out, still showing as online and with waveforms. The files continue to be absent when exporting the timeline. Restarting Premiere will temporarily restore the audio from the files, but changing focus to another application seems to be enough to trigger the issue again. It also spontaneously reoccurs after a nonspecific/inconsistent interval.

Considering the fact that the MXF codec was apparantly missing or incompletely implemented in the first release of CS6, logic would seem to suggest that this problem is related. I havent tried the workaround of deleting the conformed audio, but I certainly will.

@Kostas: Im surprised to read your MXF file imports now appear slower. My situation is exactly the reverse; importing is easily 4x as fast as in CS5.5, and the conforms do their business quietly in the background while still allowing me to work. A big improvement. Now if they'd only stop disappearing

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Adobe Employee ,
Jul 13, 2012 Jul 13, 2012

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Adobe has now been able to reproduce the issue (with the help of some of you here on the forum - thank you very much!) and is working on a fix. You aren't crazy. It is an Adobe issue. Don't bother deleting the conformed audio files, it won't help in this case.

@thirdeyeamsterdam - what did you mean when you said the MXF codec was apparently missing or incompletely implemented in the first release of CS6?

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LEGEND ,
Jul 13, 2012 Jul 13, 2012

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Mitch,

Thank you for that update. Many will be happy, when the work is done on this problem.

Appreciated,

Hunt

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New Here ,
Jul 17, 2012 Jul 17, 2012

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Mitch, when I first installed CS6, I was able to import MXF HD into Premiere and AE, but not export as MXF OP1a. The codec was simply not listed in the pull down, and the media encoder didnt recognise the file type either and refused to allow it to be imported to the queue.

I assumed this was an issue addressed by the update which was released soon after. Either way - apart from the audio issue obviously - it now works.

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Explorer ,
Jul 29, 2012 Jul 29, 2012

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Add me to the pool of users suffering this problem, in my case with footage from a Canon XF100, which is also XDCAM. I'm glad that someone from Adobe said that they were able to reproduce the problem and hopefully the next update will fix it.

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Explorer ,
Aug 06, 2012 Aug 06, 2012

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Mitch W wrote:

Adobe has now been able to reproduce the issue (with the help of some of you here on the forum - thank you very much!) and is working on a fix. You aren't crazy. It is an Adobe issue. Don't bother deleting the conformed audio files, it won't help in this case.

Mitch, I was wondering how close is Adobe to fixing this problem. I'm trying to edit this project from my Canon XF100, and it's driving me crazy, having to close and re-open Premiere several times in the past half hour because a new clip in the timeline suddenly mutes for no good reason. This seems to happen a lot when trimming by using IN and OUT points and pressing ' to extract. It's really frustrating to edit like this.

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New Here ,
Aug 08, 2012 Aug 08, 2012

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Instead of getting angry for this problem, I will help with more ideas to Adobe, Im from Argentina, im very dissapointed with this incredible audio issue, at least now Im reading more people with this problem....

Ideas I have at this time:

> Looks like the problem is only when you edit a clip with a lot of cuts, because i made a 2 hour long video for a school with a lot of speech and long shows with not too much editing and no problem with the audio

>Looks like the problem is only with HD video, the same than before: it was a DV AVI file from my old Sony PD170....

>The problem starts when i try to make an HD video with files from my Nikon D7000. I make shorts clips for electronic clubs with at least 60 cuts every take for about 1-2 seconds long. When you start the editing wit few cuts everything is fine, but when you try to put all those 60 cuts together the audio will be gone and u still see the waveform

>No problem editing with a lot of cuts if I use my material from my Sony PD170. Incredible!

I've just made a video clip with mp3 audio of 4 minutes with a lot of cuts and no problem at all with the audio...... a lot of effects too... everything ok

>Conclusion: the problem starts when u import a lot of short video clips and select IN and OUT from every clip and try to mix them quickly.... no problem if u import 1 hour long video from fire wire from PD170 and make a lot of selections  (In and Outs).... Am I right?

thats all i can say

thanks for reading

David from Buenos Aires

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Participant ,
Aug 09, 2012 Aug 09, 2012

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>Looks like the problem is only with HD video, the same than before: it was a DV AVI file from my old Sony PD170....

>Conclusion: the problem starts when u import a lot of short video clips and select IN and OUT from every clip and try to mix them quickly.... no problem if u import 1 hour long video from fire wire from PD170 and make a lot of selections  (In and Outs).... Am I right?

Hi,

The problem isn't only with HD video. We're using MXF PAL DV@25Mbps and the problem randomly appears. Usually when we use audio gain the audio disappears. Using "Undo" the audio re-appears (!!).

I'm forwarding this issue to our legal department. We've aired 3 stories with audio missing on some parts and the client refused to pay us (and he's right not to).

It's unacceptable to have an issue with a feature (MXF support) that worked fine in previous versions. It's also unacceptable to release a (paid) version without checking crucial parts of the software (MXF is being used on most production studios now).

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Explorer ,
Aug 11, 2012 Aug 11, 2012

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Kostas Arvanitidis wrote:

I'm forwarding this issue to our legal department. We've aired 3 stories with audio missing on some parts and the client refused to pay us (and he's right not to).

It's unacceptable to have an issue with a feature (MXF support) that worked fine in previous versions. It's also unacceptable to release a (paid) version without checking crucial parts of the software (MXF is being used on most production studios now).

Yes, it's outrageous that Adobe would release software with such an obvious flaw that shows shortly after doing a few cuts with MXF footage. I was editing happily in Edius but I wanted the extra creativity I can have with the Adobe suite, but I've invested a lot of money not only in the suite, but in a new graphics card just so Premiere can have at least half the real time performance I was getting on Edius with a lame Radeon 4850 HD, and a Matrox MXO2 Mini to preview video properly. Shortly before that I spent $3,500 in a Canon XF100 along with two CF cards. It's really aggravating to not be able to edit video from it smoothly and having clips go mute for no good reason at all.

In other words, Adobe, get on it, and release an update really soon.

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New Here ,
Sep 05, 2012 Sep 05, 2012

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I am seeing the exact same behavior editing XDCAM NTSC DVCam footage in CS6.  I don't understand how this made it through Adobe QC, this is a really bad bug.

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New Here ,
Sep 05, 2012 Sep 05, 2012

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Now I bought 4 gb Ram more and the problem is solved?

I mean, if the prolbem starts I just delete de cache folder and the problem is solved, that didnt happen when i had just 2 gb of ram.

older configuration: 2gb RAM

new coonfiguration: 6gb RAM

hope it helps

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