Constant Power Transition Causing Audio Stutter in Exports

I've now had this happen with two completely seperate projects today where I preview my edit, everything looks and sounds good, but then when I export there's a clear audio stutter wherever I used a constant power audio tansition. My solution thus far has just been to take out these transitions, but I'm wondering when this will be fixed.
NOTE: I experienced the Constant Power bug that happen last month that sounded like a super loud buzz. This is different.
Is anyone else experienceing this problem?

>wondering when this will be fixed
https://www.adobe.com/cfusion/mmform/index.cfm?name=wishform to report a bug

Similar Messages

Constant Power Transition Sudden Jump in Levels Bug

Sorry if the discussion's title is confusing – that's honestly the best way I could think of to explain what I'm experiencing. Here's a video screen grab with audio to illustrate further the possible bug I've run into: Premiere CC 2014 Audio Transition Bug - YouTube Do you hear that little jump in volume right as the playhead plays through the transition? It almost sounds as if it's doing the precise opposite of what the fade should be doing.
I'm just trying to add some small, two-frame, Constant Power transitions to some audio tracks to smooth out a cut – one of the oldest tricks in the book. I see this in many different kinds of projects, regardless of size, creation date, types/formats of media used, timeline settings, etc. It mostly just seems random to be honest.
This specific project is very minimal with all 1080p ProRes media being used. No .MTS, .MP4, or anything of the like. The project is all cuts, and no fancy VFX, titles, color grading, dynamic linked clips, etc. It's all quite simple.
Does anyone have any ideas on how to fix this problem? Thanks in advance for your help!

I see you have a stereo track. When I panned my tracks 100 I would get pops and glitches, when I panned them 99 the pops and glitches went away. Adobe support also told me that Constant Gain is the least buggy of all the transitions, while Constant Power is the most buggy.

PE13 Audio Stutter on Export to AVCHD

PE13 users, I need a bit of advice on troubleshooting an export of some HD video to AVCHD. Coming from PowerDirector 12, I just purchased PE13 and am experimenting with the software. Several video clips shot via Sony camcorder 1920x1080 60i 30 FPS, none more than about 2 minutes each, for a total of about 7 minutes. I've imported these clips into a new PD13 project, added a few transitions, and exported as M2T - H264 1920x1080i 30 (audio setting: Dolby Digital, 192 kbps, 48 kHz, Stereo). Video looks great, however, audio stutters a bit in some places, a lot in others, and plays fine for stretches. It should be noted that I exported even longer video of similar settings via PowerDirector and have not experienced any audio stutter ever.
When I export this same project as MP4 - H264 1920x1080p 30 (audio setting: AAC, 160 kbps, 48 kHz, Stereo) the audio plays flawlessly.
Are there any settings that may eliminate this stuttering when exporting as M2T - H264? It looks like I may be able to reduce the kbps of the M2T file to 160, but would rather not if it wouldn't make any difference anyway. I'll experiment when I get home to see if lowering kbps helps, but in the meantime, any other advice would be much appreciated.
Thank you.

Ralph McMurphy
Thanks for bringing your thread to attention.
When hitting the Reply button to reply, I found a post that I started to send you and apparently did not. The content that I found was
I would say go with the AVCHD.mp4
But consider you can take your Timeline to Blu-ray disc format on Blu-ray disc using
Publish+Share
Disc
Blu-ray
and have a choice of Presets
Presets
H.264 1440 x 1080i NTSC Dolby
H.264 1440 x 1080i PAL Dolby
H.264 1440 x 1080p NTSC Dolby NEW
H.264 1920 x 1080i NTSC Dolby
H.264 1920 x 1080i PAL Dolby
H.264 1920 x 1080p NTSC Dolby NEW
The 1080p ones have frame rate of 23.97 progressive frames per second. The 1080i have are either
25 interlaced frames per second or 29.97 interlaced frames per second depending on NTSC or PAL.
If you want to export to file saved to the computer hard drive, a good choice in your case for a later burn to Blu-ray disc format on Blu-ray disc
would be
Publish+Share
Computer
AVCHD
with Presets = MP4 H.264 1920 x 1080p30
You cannot customize the burn to presets. But, you can customize the preset for the export to file saved to the computer hard drive.
But, those settings will be overwritten in the encoding process in the burn to process to give you the format cited above.
Please let us know if that targets your question.
Thank you.
ATR

Transitions cause audio/ video sync problem

Lets see if I can explain this one. Its certainly an odd problem.
I have an iMovie project, with around a couple hundred photos in it, and some short video clips. Im putting transitions in between everything.
At some point I noticed that, sometimes, I'll add a transition after a video clip, and then the last few seconds still have my audio from that clip but the video changes to a photo 2 photos later in the time line. Then it changes to the next photo after the clip.
Im using the latest iMovie HD, and Quicktime Pro 7.5.5, and Mac OS X 10.5.4.

Hi
I do like this:
• Select the video-clip
• goto Advance menu - select extract audio
• now apply transition
• adjust audio clip
Yours Bengt W

Sync issues on export to AME using constant power

Using a new 12 core Mac Pro with PP CC 2014.
If I have any CONSTANT POWER transitions in my timeline (for example when shortening music) when I export to AME as an H.264 YouTube setting the video plays back out of sync. You can hear it 'jump' at the points where the CONSTANT POWER transitions are. It trys to catch back up but all the edits are off by at least 10 frames. Near the end of the 2 minute video the sync catches back up as long as there are no CONSTANT POWER transitions near the end.
The ONLY work-around that works is deleting all CONSTANT POWER transitions and using straight cuts.
Strangely enough when you play back the movie inside PP CC 2014's timeline- it plays back smooth and clean.
Anyone else having this issue???
Using a audio wave file (music)

Use shorter audio files. Break up the audio into shorter, more manageable chunks, and then place those shorter audio files in your movie.

Mouse and Audio stutter/freezes with Intel ICH9R AHCI drivers

edit: Initially (in original post) I suspected the random mouse and audio stutter/freezes were from a driver update. However between a reboot during these updates I had disconnected an eSATA cable from a drive that was not powered. It turns out the ICH9R when running in AHCI or RAID mode with appropriate drivers installed has problems with some HDDs when the drive isn't powered but the SATA data cable is connected. This is quite normal in SATA enclosures which I have plenty.
What makes this more puzzling is that the stutter/freezes are very tiny and hard to notice IF you don't have any PCI cards connected. With a Intel 100 Mbit PCI NIC connected these stutters became real blocking issue that would have prompted me to return this Gigabyte G33 motherboard (Also affects P35) to the shop had I noticed this issue sooner. I'm not yet sure whether this stutter w/ AHCI/RAID issue affects only the Gigabyte boards but what is certain is that it does affect these in quantity based on how there's others reporting the exact same issue if googling around.

This issue has been confirmed not to be limited to just my system.
http://forums.microsoft.com/msdn/showpost.aspx?postid=1196678&siteid=1&sb=0&d=1&at=7&ft=11&tf=0&pageid=5
androidi wrote:
Same problem here, it's not limited to Vista, also happens on XP/2003 both 32/64 bit. I'm 99% sure it's to do with the Intel AHCI/Matrix storage driver. It'd be interesting to know what your motherboard brand/model is. Mine is Gigabyte DS2R and I've seen reports of this issue on other forums as well. I'm using the integrated Intel graphics and every component is Intel except Audio Realtek and Network Broadcom. The issue goes away by disabling AHCI/RAID but you lose hot-swap of SATA drives and NCQ.
The primary indicator for this issue is that if any of the SATA ports has a drive that is plugged in but not powered up (and not powered down by the AHCI driver programmatically) then you get this global stutter/studder/hickups/choppy. In audio it sounds like tiny repeats. How bad it is seems to depend on what drive brand is plugged in etc so on some combinations it's very tiny and doesn't happen that often, on other drives it's more constant and easy to detect.
I'd suggest you report at:
http://supportmail.intel.com/scripts-emf/welcome.aspx?id=
Chipsets/Chipset software/Matrix storage Technology
btw. My AHCI BIOS/OROM version that is shown on boot with AHCI/RAID enabled is iSRC 1.07 08042006, what's yours?
nada_clue wrote:
Though most posts in this thread involve laptops and many of them attempt to isolate the problem in wireless network adapters, let me assure you the same problem can show up in a desktop with wired-ethernet-only. (Admittedly, it's a Realtek onboard gigabit LAN, and Realtek has been fingered by a number of you for its drivers, at least its audio drivers.)
On a brand new core2-quad P35 chipset machine with 4GB ddrII, with a completely clean install of Vista 32 business, I have been suffering intermittent global stuttering. It affects not only audio (of any sort, through any player, whether or not dsp-enhanced) but also video (you can see it in screen saver motion, for instance) and even cursor or mouse movement (hit and hold the spacebar in a text editor and watch the stuttering fun begin!). It's intermittent but not random; that is, it can disappear for a while after I apply one of my stab-in-the-dark fixes (read on) but can come back and then generally remains until I re-apply a fix. It's been like this since about day 1. Well, maybe day 2 or 3.
I've seen so many variants of this problem posted in so many forums, with so many theories, that I could spend the next three months doing nothing but troubleshooting it, assuming I had the budget and time to try endless substitute components or re-builds from scratch, but there's no assurance any or all of that would actually fix it. I do have the Intel Storage Matrix AHCI drivers pre-installed, and Intel itself vaguely alludes to possible 'degraded performance in Vista' with regard to those drivers--is this what they're talking about? They don't say. I do have an Nvidia 8800gts, and Nvidia forums are full of complaints about unacceptable issues with their video drivers, but again it's vague, no smoking gun for global stuttering. I have tried THREE different audio configurations--the onboard realtek hi-def; an x-fi elite; and a c-media based Omega Claro card. I have the problem with all of them. Discovering how musical the c-media card is was a happy accidental side effect of this miserable odyssey, but it really just makes it more frustrating, since I now want to listen to music more than ever but can't find a permanent solution to this vexing problem.
One of the weirdest symptoms is that the stuttering can re-appear (if it has been gone for a few days) just by connecting an external SATA drive, even if the drive is not turned on! Equally weird: simply going into the BIOS and just looking, changing nothing, exiting without saving, can cause it to reappear upon re-boot!
And to ice this cake of weirdness, here are some things that can make it go away (sometimes, at least for a while): removing the external SATA drive and rebooting; removing and re-seating the cards on the motherboard; and clearing the BIOS (jumper or pull out the battery) and then re-entering all the same settings as were there already.
The symptoms are driving me nuts, as audio is one of my main uses for a computer, but it's the HUH? quality of these various actions that can seem to make the problem disappear or re-appear that are really threatening my sanity. If anybody can sift a better clue out of these ashes of frustration than I can, I wish you would post it.

OS 10.4.10 Update Causing Audio Popping (AND HUM) Issues:

OS 10.4.10 Update Causing Audio Popping (AND HUM) Issues:
The problem on my Intel Mac mini with external Klipsch speakers (two mid-range/high and a subwoofer) is REAL obvious as the system emits a hum like a Spinal Tap amplifier turned up to #11 when 10.4.10 powers down the audio circuitry
Then, if I play a song in iTunes, it first pops and the hum disappears right before playing.
Quite annoying. I restored the mini from a recent backup to 10.4.9. Problem gone.
I'm glad I test updates on the mini before applying them to my Intel iMac 24. I guess I'll just hide & watch what happens before doing any more updates.
Here's what I sent to Apple tech support:
Guys/Gals (OS X Engineers):
Concerning the Snap, Crackle Pop Audio problem in the 10.4.10 update:
Please. Just do the right thing and fix the audio.
There is no need to power cycle the audio subsystem to save .0005 amps on the laptop line.
And then to make your Mac mini/iMac/other desktop users have to put up with it when using AC power is ridiculous.
Put the audio subsystem back like it was in 10.4.9 and let the laptop battery freaks looking for mini-amp savings get a "work-a-round".
Crikey!
iMac 2.16 Ghz Intel Core 2 Duo 2GB RAM Mac OS X (10.4.9) 20 Years of Microsoft-Induced Grey Hair
Mac Mini 1.83 Ghz Intel Core Duo 1GB RAM Mac OS X (10.4.9) 20 Years of Microsoft-Induced Grey Hair

Libby,
Backup is unable to make a restorable by Disk Utility backup. You can restore pieces of the software as outlined in my FAQ about backing up user data:
http://www.macmaps.com/backup.html
But to be able to restore a backup with Disk Utility, you need a cloning utility to have made the backup.
I suggest starting a new thread here, where someone else could help you out better:
http://discussions.apple.com/forum.jspa?forumID=752&start=0
First off, you'll get a wider audience who may be able to solve your problem. Secondly, responses to you won't confuse the original poster with solutions that don't apply to them. And thirdly, you'll know for certain whether or not a response applies to you.

Why does embedded video cause audio sync issues?

Greetings all,
   I have a question that is perhaps best answered by an Adobe developer or someone who knows the SWF file format and various audio/video standards fairly well. When one drags an FLV file into the library in flash authoring tool, a window appears. If you click "Embed FLV in SWF and play on timeline", an awful message appears, "WARNING: Embedded video is likely to cause audio synchronization issues...". My question is: why would there be any audio synchronization issue? Is this really just a bug/unimplemented feature? Or is there some fundamental shortcoming of current versions of the SWF file format that does not allow for the FLV audio/video signals to be properly encoded in the SWF file? Or is it that the flash player plays SWF and FLV data in fundamentally different ways and that even if the audio/video is perfected sync'd in the SWF file, the fact that it's a SWF file causes flash player to lose sync?
   I'm guessing only a Flash developer could answer this (and probably not just any Flash developer!), so if there are any out there, please spare some wisdom for a poor lost SWF surfer.
   Thanks!

Hi:
Welcome to discussions!
From what I am reading, you are trying to use the audio that was in the original video-right? By that, I mean, you haven't added a voice over or music-just using the speaker's voice on the tape.
If so, you might want to try using something like a Fade Out or Fade In instead of one of the transitions that add or subtract to the length of the video
[Quoted from iMovie Help]
Some transitions (for example, Cross Dissolve and Push) shorten your movie by a few seconds, depending on the speed of the transition. For example, if you add a transition with a speed of 2 seconds, iMovie overlaps 2 seconds from the first clip and 2 seconds from the second clip as it renders the transition. This shortens your movie by a total of 2 seconds.
The Overlap transition freezes the last frame of the clip on its left and superimposes it over the next clip. Fade In/Fade Out blackens the last frames of the clip on the left and the first frames of the following clip.
[End quote]
Or you could try extracting the audio from the movie so that you could edit it and sync it that way.
Sue

Audio crackles on export

Hello,
For a couple spots in my timeline I have to two audio tracks (of the same song/lyrics, but recorded on different nights) layered on top of eachother.
I have no issues with it in FCP7, sounds great.
On export however, the audio crackles in the spots where the audio tracks are "doubled up". I'm not sure why this is happening, because when viewed/listened to in the timeline, all sounds good.
My video is ProRes (converted from AVCHD) 1920x1080 60i. Square pixels. Sequence matches the video settings.
Audio is 16 bit stereo, @ 48.0 KHz
Anyone know what might be causing this crackle after export (same settings)?
Thanks

Check your levels when you play this part, are they in the red? If so your audio is too loud... bring down the volume.... Unfortunately (or fortunately) FCP doesn't crackle when your audio are too hot...

BUG: Speed Change + Audio Transition = No Audio-Video Sync

BUG: Speed Change + Audio Transition = No Audio-Video Sync
If you change the speed of clips (125%) and make an audio transition between them (power), the audio runs out of sync. The longer the transition, the more out of sync.
alec

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Eddie
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Deleted audio reappearing in exported version

I'm attempting to make a movie in which I've dubbed over several clips. I originally detached the audio from these clips and deleted it before dubbing them over, and in iMovie it appears that the clips are, in fact, muted, but once I export, several clips still have the original audio. I've gone back through about 5 times and tried to make sure all the clips' original audios are muted, which it appears they are, but without fail, every time I export the original audio is there. Any suggestions on what I can do to fix this?

found the answer in another forum:
e: Audio shifts during export
Posted: Sep 11, 2010 1:30 AM in response to: MEMCRJ
Reply Email
There is a well known bug in iMovie '09 that can cause audio glitches. If you have made any speed changes (such as slow or fast motion) in your project, you must use only the presets on the speed slider. If you manually enter a custom speed, by typing in a percentage, you may experience issues with the audio. These issues are not evident in preview, but only appear upon exporting the project.
Note that the slider presets are 12.5%, 25%, 50%, 100%, 200%, 400% and 800%. Don't enter speeds like 33%, 75%, 89%, 120% etc. - use ONLY the presets.
John
MacBook Pro 15" (early '09) 2.66 GHz, 4 GB RAM, 320 GB HD Mac OS X (10.6.4) LaCie 120GB; Maxtor 250GB, 300GB and 1TB FW drives; Sony DCR-TRV20E and HDR-SR7

Leopard and Audio Stutter Requiring Restart

Ever since installing Leopard, there will be some random event that causes audio to start stuttering and the only way to stop it is to restart the computer. I use Guitar Rig 2 very heavily but it isn't just the tracks with GR2 active that stutter. Once it goes, it's all the way gone and affects all audio. I normally use headphones and can sometimes go two hours before it fails but it doesn't seem to survive more than five or ten minutes when I'm using the monitors hanging from the audio interface. That kind of points to Presonus incompatibility but the best course of action is not at all clear. Any help would be appreciated as a back-out would be next to impossible.

I finally have a chance to get back and check Q&As/Posts. I actually solved my stuttering, indirectly thru another issue. During the 10.4 OS update, my dock (in Leopard screen) dissappeared. In the attempts to recover it, I fell back on my PC way of thinking and decided to re-install the 10.4 update, and wa-lah, the dock was back, and the stutter stopped and has not returned to this day. It appears the updates could have something to do with it, in addition to, things like a cell phone near by, frequency interference from other electronics, etc. However, I still think it's often an update related matter.
Here's a discussion on the issue, and also do a search in support with "Macbook audio stutter" and do the search for the last 90 days. The search will yield some good discussions, even more relevant ones the last 30 days, one person noting stuttering started after their upgrade to 10.5
Hope this helps.
http://discussions.apple.com/thread.jspa?messageID=8082774&#8082774

Best way to make a Constant Power Load

What would be the best way to make a load that always draws the same amount of power whatever the voltage on it. For exemple, an load would draw 100 mA at 24 VDC, 150 mA at 18 VDC and 200 mA at 12 VDC. All I found is to use Nonlinear Dependant source.
Any easier way to do this? Thanks.

Sorry about the file mix up, I was anxious to get it posted for you that I failed to realize you were using a different version.
As far as the last "amplifier" in your Leaky Feeder design, I actually hooked it up to the 24VDC supply on the left and this was a direct connect before the first resistor. I realize this is not what would be ideal for your application as probably you have only a certain place in the Leaker Feeder to tap off from. I would suppose this would be going into a different entry way off the main entry at an intersection so I do not know how my adjusting the placing of this would effect the results because it seems to me by doing this I have bypassed a bunch resistance in the Feeder cable itself (if that is what the resistors represent) and also bypassed a number of amplification stages in the process as well.
I will post a picture of my circuit for you to examine and try in Version 9. This is the only thing I could come up with to where the power draw was the same no matter what the voltage input was. The only thing I can see as a drawback is that with this circuit the current remains constant but the voltage fluctuates. If I use a 24V regualtor and drop the input voltage to 12V the current remains at approx 118ma but the voltage drops to 12V when I plug it into your circuit.. I will let you try it and see what you may be able to do with it.
Message Edited by lacy on 04-28-2008 05:47 PM
Kittmaster's Component Database
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Power Point Import Audio Question

When I import a Power Point with audio the audio plays in my captivate file but does not appear in the library nor in the audio management area, and I can not find the audio file anywhere within captivate. Any ideas?

Can you see in the center of the slide where it gives you the
animation or click box properties, like "Click Box (646x484)"? If
you drag the right edge of the slide you will see that there are
two layers - one is a click box layer and one is an animation
layer. Also, make sure your timeline is fully expanded at the top
of the editing window - you should be able to see separate items
for audio, click box, animation and anything else you have on the
slide. If you don't see that, then click on the right pointing
arrow next to the "timeline" caption to expand the view of the
timeline. Good luck!

NO AUDIO ON BATCH EXPORT. First 2 times i posted this it never showed up....

Why do I randomly get audio from batch export using AME. Usually it doesn't work at all as in NO audio but other times several of the files in a batch will have audio. And other times none.
What gives?
running Mavericks on G5 with 12GB of RAM and Quadro FX4800 video card.
Rob

First of all, could you tell me what version of AME you are using?
Did you import files directly into AME or queue jobs from Premiere Pro or other Adobe apps?
Could you clear the following cache folders while no Adobe app is running and try again?
/Users/<user name>/Library/Application Support/Adobe/Common/Media Cache
/Users/<user name>/Library/Application Support/Adobe/Common/Media Cache Files
How many files did you encode at one time? If you encode one at a time, does it encode fine?

Constant Power Transition Causing Audio Stutter in Exports

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