Time-remapping audio artifacts - pops/crackling/static

I'm still not entirely sure why it happens but when I slow footage down with time-remapping in AE CS5-6 I can most of the time get these 2-3 frame audio popping sounds ( best way I can describe it, you could also describe it as a static spike or crackling sound, something that is noticeable different from the slowed down audio ). However I don't get it at anytime during ram previews, I'm only hearing them with rendered footage. Normally I'd just take those rendered clips and reduce the audio levels for those 2-3 frames but I'd like to see if there is a way to avoid it entirely.
I've tried rendering in various codecs and matching the source footage settings exactly but haven't had any success in that direction. Again it's not in the source and it doesn't show up in ram preview, only after it's been rendered do you hear any of it. Any input and possible alternative approaches to solving this issue would be great I've run out of stuff to try.

I don't believe the source is using MP3 or AC3 for the audio but I do believe it has some slight compression. It's nearly lossless so I don't understand why rending something with heavy time-remapping using something like Lagarith would cause these types of artifacts.

Similar Messages

Why can't Adobe Premiere Pro CC 2014 Time remap Audio and Video together?

In case you didn't notice, my question is WHY. I don't know why Premiere Pro can't do this. From what I understand at the moment, the only way to time-remap audio in any way shape or form using Adobe software is through Adobe After Effects, which my computer has absolutely no chance of running ever. I know how to do regular stretching of audio in both Audition and Premiere Pro, but apparently I can't time-remap audio using either of these programs.
So why can't Adobe Premiere Pro time remap audio along with the video? What's the reason that it can't? It's a massive disappointment and would be very impressive to see accomplished in the future. If it's possible to time remap audio and video together in After Effects, that's great and all, except for the fact that I can't use that program. Why can't it be done in Premiere Pro and will it ever be possible in Premiere Pro?
Also, will time remapping audio become possible in Audition someday?

That sounds like a great idea. File a Feature Request:
Adobe - Feature Request/Bug Report Form

Time Remapping Audio?

Will someone please confirm that you cannot time remap audio (like you can to video) in FCP5? If this is the case does anyone know of a shareware/freeware app. that can remap the time/tempo of an audio file?
Thanks.

does anyone know of a shareware/freeware
app. that can remap the time/tempo of an audio file?
Thanks.
Audacity and GarageBand are two that can change the tempo or pitch independently of one another. Audacity is available for free, I think.

Audio and Video are out of sync after time remaping.

After I did the time remap,audio and video are completely out of sync.
I don't know what I did wrong.Please HELP.
I did a short video(43seg) to explain myself better
http://www.youtube.com/watch?v=X0PQEoZvGbk

ha. having the video is killer. there are a couple ways to do this. i'd recommend using the blade tool (tap b twice to get the one that cuts all tracks), make a cut through the audio and the video at the points where you want it sped up, then right click the clip itself (which should be linked with audio and video) and then just set it to whatever speed you want. it'll have the same effect. you might have to adjust boundaries or you can select ripple.
alternatively, it looks like you just needed to do the same thing to the audio that you did to the video in that clip you uploaded. you can always relink things by selecting the audio and video and hitting cmnd+L.
hope that helps.

TS3581 Crackling static noise in audio with 30 pin lightning adapter when battery is full

Anyone else get a really bad crackling static noise through the audio when using the 30 pin lightning adapter and the battery is almost full? I am using an iPhone 5, BMW iDrive with the Y audio and USB connection. I did not have this problem with the 4S and the normal 30 pin connector. The lilghtning 30 pin adapter seems to create interference when the phone's battery is nearly full. I also see the warning message indicating that charging is not supported - and according to the troubleshooting guide this is normal - but what about the noise????

Alright, another update: I tried another iPhone 5, which did not charge, and an iPod touch (without the lightning adapter, obviously), which also did not charge. Additionally, I tried the lightning to 30-pin adapter with an old sync cable and my computer, and it worked fine. At this point, it appears that the problem may be in the MDI cable coming from the car, rather than the adapter. Perhaps it was just coincidental that it stopped working at the same time I upgraded.

How to fix streaming audio pops/crackles and then stops all sound

I am a google Chrome user. I am unsure if this problem is related to Chrome or to Flash by I suspect there is a problem with both. I previously had this problem where when you start a youtube video for example the audio would pop/crack and then the audio would go dead. If you were able to put the video on full screen before this happened it would work fine. This really only happens with windowed (non-fullscreen videos). Previously I went in to my chrome plugins and disabled chrome's native flash and that fixed the issue. With the most recent update to Chrome this has happened again. This time disabling chrome's flash does not work. On the adobe version site it says that for chrome the version should be 11.5.31.137 but it shows me as using 11.5.502.146. The latter would be the version for firefox. I do not use firefox. Could this be causing my trouble? I have used the official flash uninstaller and restarted my computer and reinstalled but the same thing happened. Thanks.

Thanks for the link. I have tried what they recommend. I currently have two flash files. I have disabled the chrome one and the one that is enabled is C:\Windows\system32\Macromed\Flash\NPSWF32_11_5_502_146.dll
However, I ran the chrome://flash and this is what I got:
Flash plugin
11,5,502,146 C:\Windows\system32\Macromed\Flash\NPSWF32_11_5_502_146.dll (not used)
--- Crash data ---
Crash Reporting
Enable crash reporting to see crash IDs
For more details
https://support.google.com/chrome/?p=ui_usagestat
--- GPU information ---
Graphics card
ATI Radeon HD 4800 Series
Driver display name
aticfx32.dll,aticfx32.dll,aticfx32.dll,atiumdag.dll,atidxx32.dll,atiumdva.cap
Graphics card
ATI Radeon HD 4800 Series
Driver display name
aticfx32.dll,aticfx32.dll,aticfx32.dll,atiumdag.dll,atidxx32.dll,atiumdva.cap
--- GPU driver, more information ---
Vendor Id
0x1002
Device Id
0x9460
Driver vendor
Advanced Micro Devices, Inc.
Driver version
8.970.100.3000
Driver date
7-3-2012
Pixel shader version
3.0
Vertex shader version
3.0
GL version
GL_VENDOR
GL_RENDERER
GL_VERSION
GL_EXTENSIONS
I've never looked at this before but it is weird that it is saying that that flash is not used.
Anyone know about the firefox version of flash installing for Chrome because as I described above that doesn't seem right.

Using time remapping w/AE CS4 to freeze time/video freezes but not audio

Ok I do alot of editing of sports. One thing I like to do is freeze the moment when a special play is about to happen, highlight the player (via masking), then resume play. I had no problem with this in CS3. Now when I use the same workflow in CS4 the video freezes but the audio doesn't. So when I play it back I see the video freeze BUT the audio is still playing...hence now my audio is not synced up with the video. Didn't do this in CS3. My workflow: from PP -rightclick clip- replace w/ AE comp- AE loads my clip in a comp- I enable time remapping- extend the duration of the comp by 5 sec- find the point I want to freeze-set a key frame-copy key frame to origninal position- now I have a 2 second freeze between 2 keyframes. When I check the comp in PP the video freezes where I want it to but the audio keeps playing during the freeze....even after render. Thoughts?

Hi,
I'm also having the same problem with CS4 version. I'm using Mpeg4 file shot on my canon 60d and it's freezing the video in places and continuing the sound. The whole clip is just over 2 mins and I don't have any effects at all.
Does anyone know how to solve this please???
Cheers!
Shan

Audio only time remapping

Is there a way in either FCP 6.0.2 or Soundtrack Pro to do a time remap on an aiff audio file? I would like to take a piece of music and do a time remap on it to make it sound as if it was starting from zero speed and increasing to normal much like an LP might sound if the turntable was turned on and came up to 33rpm. I don't figure it would be more than a second, or a second-and-a-half of remapping.
Thank you in advance for your help!

I think After Effects is easy to use, but I've been using it for over ten years.
You add the AIFF file to the project, then add it to a comp (that's very similar in process to editing a clip into a sequence in FCP).
Then select the layer in the timeline and choose Enable Time Remapping from the layer -> time submenu (I'm guessing). The keyboard shortcut I believe is Command-Option-T. Anyway, you'll figure that out quickly enough.
Then it is just a matter of playing with keyframes and the way the keyframes Ease. Right-click on a keyframe and choose Ease In. You can also view a graph of the time remap parameter and then have a way to visualize the remapping graph.
This may all be a foreign language, but After Effects is a tool you should know anyway, like Photoshop.

How to sync/edit audio when using frame freeze or time remapping?

how to sync/edit audio when using frame freeze or time remapping? in premiere pro cs6

You need to give more information about what you want to happen to the audio when you freeze or time remap the associated video.
Is it synch video?
Is it music?
Is it Voice?
Generally .. you have to cut and design the audio around the video effect.

X-Fi Xtreme Audio - Volume goes low, static, then comes back.

Hi all, I have a problem that just developed with my sound after 3 years of owning this PC. Is this the infamous static problem with the card or something else I can fix? Thanks.
I was playing a game the other day when the sound 'cut out'. If I turn the volume on my speakers up louder I can sometimes hear what should be playing, it's very quiet and sometimes distorted. There is also a loud hiss and static when the volume is at standard levels whilst the sound is doing this. Sometimes I can't hear anything if I turn it right up even, it's just the static.
There have been the odd pop, crackle and even strange noise coming from it on occasion over the last few days.
After a while it just decides to go back to normal and will work for a while and then do the same thing again. Will happen when playing games or even just on the desktop (listening to music to test this)
I have unplugged my speakers (2 desk speakers with subwoofer) and put headphones in, they are doing exactly the same thing so it is not the speakers.
I have updated the drivers. No change.
I'm baffled. Sometimes even restarted the computer doesn't fix it, it just decides to work again.
It's almost like it's getting inteference or picking up a staticy radio, and then cuts out again, but obviously i know that's not what it's doing.
Any solutions or am I looking at buying a new sound card here?
I'm not using two gfx cards, and the mobo is ASUS p5n-e sli. I have an Nvidia Geforce 8800 GTS gfx card.
Any other info you need let me know, thanks in advance.
Oh and I believe it's in PCI. Not PCI-E.

@Re: X-Fi Xtreme Audio - Volume goes low, static, then comes backu Hi
Did anyone solve this - I have started getting exactly the same problem today. There is a fairly loud pop and then the sound that normally should be coming form the machine (game or music) is very quiet and distorted. After a short while (a few minutes), it pops again and starts working again. I built this machine a few months ago and this is the first time that I have had this issue. The specs are as follows:
XFX ATI Radeon HD 5870
Asus P6X58D Premium Intel X58 Motherboard,
Intel Core i7 920 D0 Stepping 2.66Ghz (Nehalem)
Corsair XMS3 6GB (3x2GB) DDR3 PC3-2800C9 (600MHz) Tri-Channel
Hitachi Deskstar 7K2000 2TB HD
Intel X25-M Mainstream 80GB SSHD
X-Fi Fatalty FPS
The X-Fi card is from my old machine and it worked perfectly in that one.
Many thanks,
Dave

Why am I getting a crackling/static noise on my macbook air?

I have a MacBook Air (mid 2012) with version 10.9.5. I keep hearing a crackling/static noise every time there is Audio output.
The sound seems to be coming from the top left-hand corner closer to the 'esc' key.
I have no external devices connected and I have restarted multiple times. If I mute my sound the crackling/static also stops.
Any idea what I might be the cause and how I can fix it?
Thanks.

The iPod does not use a cellular network It uses only wifi.
Try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Power off and then back on the router
- Reset network settings: Settings>General>Reset>Reset Network Settings
- Try when connected to another wifi network

Fixed Popping/Crackling on X-Fi Titanium Fatality Pro

For those having problems and tried all the IRQ fixes+ unofficial drivers but failed..
You might want to use this DPC latency tool
http://www.thesycon.de/deu/latency_check.shtml
You can read how to use it from the website.
Anyways, I isolated my problem down to my gigabyte motherboard EasyTune software [used it for fan control]. Audio is working fine now.

Re: Fixed Popping/Crackling on X-Fi Titanium Fatality Pro That spikes (they are rear but they do occur)?im geting is during playing World of Warcraft. So when all components are under (some) load. Doing this tests when you dont do anything seems kinda pointless And ye if you dont notice any issues you shouldnt worry about dpc spikes/latency anyway. This was more like and experiment, when i saw people complaining and i notice on nvidia forums that "dpc fixes just missed 96.75 drver release", so i went and check it out what the hell this actualy is. So also people that are runing nvidia cards and have sound issues, update to latest nvidia driver (97.x+) it might resolve your issues. Also as far as i know occesional spikes are to be expected, whats bad is, when you constant latency is high (over 500ms). This shows as unusual fps drops and/or sound crackling. I personaly suspect that lots of problems about this is actualy caused by something else and not creative driver/card. Known "bad" drivers are lots of times also network drivers, so people should keep updated those as well...

Audio tracks pop at start of song

hi,
im usiing g5 dual 2x2.3 ghz. 250gb hard drive, 2.5gb ram with logic 7.2.2 and a digi 002 rack. when i play back my song the audio tracks pop just before the song starts, i dont think its anything to to with the recording because i cut the tracks right up to where the song starts and you still get the pops when there is no recorded sound to be played back!!ive also tried changing buffer sizes etc. i use amplitube 2 as a plugin too. please can someone help as its driving me crazy!!!
thanks, phill
g5 dual 2x2.3 ghz. 250gb hard drive, 2.5gb ram Mac OS X (10.4) digi 002 rack

new zealand, i've toured there a coupla times early in my career as a guitarist/MD. nice place, but like australia the population is to small to support a big music industry. that's way a lot of our talent goes overseas eg: rohan s on this board. nz people were very friendly but a lot of 'em come here because there's little work there.
these days i release my music thru cdbaby hence itunes. it works and is very flattering when people from other countries like and buy your music without all the hype made by record companies.
to tell you the truth, i'm not that into computers at all, what attacted me to post here were some of the other posters who were very hospitible towards me.
my field is really just audio recording in general and music composition/orchestration.
if i had huge money, i'd probably invest in Neves, Studers etc as i still feel they have the drop on digital audio. the most appealing thing to me with a DAW is just the standard non linear editing.
most of my music is hatch in my head and in the old daze i used to write it out long hand.
today, i still don't use instruments to write on, just my brain/ear to score in logic. saves time. playback in logic just helps me to confirm what has been written.
anyway, mate, cheers. djr.

Can I use Time Remapping in Flash?

Hello Guys,
I just start working on Flash and I can't find how to use kind of Time Remapping in Flash.
I always work with AE but this project I have to work with Flash...
Is it possible ?
Thanks!

You can to an extent. It's not as good as AE where it will interpolate frames. Here's what you can do...
Put your artwork inside of a symbol. This is the equivalent of a composition in AE.
Place your symbol in the stage.
Click it once and its properties will appear in the Properties pane.
Look under the "Looping" section of the Properties window.
You can change the options to "Loop", "Play Once", or "Single Frame".
The "First" number corresponds to the frame number inside your symbol.
You can change these settings for every key frame you set.
The biggest difference between Flash and AE is that tweening a time-remapped symbol won't interpolate frames. Instead it will mess up your time-remapping. The best practice is to put your time-remapped symbol inside another symbol, and tween and puppet the new symbol instead.
An example...
You can create a mouth shapes for lip sync and put them in a symbol. Then set the symbol to "Single Frame" and set keyframes in your timeline to call up each mouth shape to match your audio. Then to move your mouth symbol around on your character's face, you can put the mouth symbol into a new symbol, and just puppet the new symbol.

Repeated frames when time remapping AVCHD clips in AE

I will try to explain the best I can. Keep in mind I am a novice and by no means highly technical. First some background: I edit sports video for college bound athletes. I put together highlight videos for them. When I am filming I start/stop the camera at the beginning/end of a play so I can easily identify/edit "clips". I have imported 10 AVCHD "clips" from my Sony HDR-SR11 to a Premiere Pro CS4 project. I am using the "AVCHD 1080i anamorphic/29.97fps" sequence setting as my output for this project will be a 1440x1080 mepeg2 file. So I get my clips in the timeline add some transitions, no major edits, render the work area and playback. Everything looks fine, all clips play smooth. Now here's the rub. I want to freeze play, highlight an athlete then continue play. To do this I am using AFTER EFFECTS (NOTE I have done this with HDV footage off my Canon HV20 camera with no problems) so anyway with the new CS4 edition I can right click on a clip in my timeline and choose "replace with after effects composition"....I do and the clip migrates to AE into a a composition ready for me to work my magic. So my method for freezing play is select the "clip" in the composition, Ctrl-Alt-T for time remapping. I add 5 seconds to the duration of the composition since I am going to add time when I freeze the clip. I find the point in the clip where I want to freeze it. I place a "time remap" keyframe at that point. I then drag my mouse to highlight the keyframe I just placed and the keyframe at the end of the clip......I drag them to the right 2 seconds, then cut/paste the keyframe I added which is placed by the CTI (which is still at the original point). Now I have a 2 second freeze in play. I add a white solid and do some masking to highlight the athlete during that freeze. And that's it.....I press "O" then "N" to define the work area then I choose "trim comp to work area" from the composition menu. I repeat this process to all my clips and here is where I see the problem. I go back to my timeline in PP and I play the clips......I see my freeze/highlight edits from AE just fine but on SOME clips......2 out of 5 for example.....I get jittery playback. So I decided to scrub thru the clip frame by frame to see what is going on. So within 29 frames this is what I see. Girl is getting ready to serve a volleyball....Frame 1-15....she steps forward to serve THEN at frame 18 she pops back to the starting point...IT LOOKS LIKE FRAMES 1-12 ARE BEING REPEATED. I scrub the rest of the clip and this happens at random points....a small block of frames gets repeated throughout the clip which in the end looks like "jitter" or "jumpy" motion. I follow the same workflow in AE for each clip BUT this "jitter" does not happen on every clip...only some. So is my workflow at fault or is AE/PP/Adobe still buggy when it comes to working with AVCHD codec?? Anyone else experience this, if so do you have a fix?

I haven't tested your theory yet Andrew but I did do this. In trying to track down exactly where these repeated frames are occurring. In AE I redid one clip that was repeating frames. I went frame by frame in AE and see no repeated frames. These changes should occur automatically in PP since the AE comp is still dynamically linked to my PP timeline. So I scrubbed the "source" (AE comp) file from the PP project panel frame by frame. And low and behold there are repeated frames, so it appears the problem is the handoff from AE to PP Sooooooo, ok I deleted the source file in the PP project panel and reimport it via dynamic link. Open the clip in the source monitor and yes...repeated frames at same point....recheck the comp in AE....no repeated frames. Delete the clip from PP project panel and this time import the clip directly instead of dynamic link.....repeated frames still there. So how about rendering the clip in AE the old fashion way then import to PP. AE Render Queue best settings - lossless.....blah blah blah. I ended up with an .avi file with no repeated frames. So to me the problem is the handoff between AE & PP. So rendering my AVCHD comps in AE first is my work around for now. Andrew...thanks! I will try your theory of converting the clip prior to the comp asap...right now I am trying to meet a deadline.

Time-remapping audio artifacts - pops/crackling/static

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