Audio Skipping Through Ram Preview

Hi I am currently using After Effects CS6, and I am editing a video. I have added a song, and everytime I try to ram preview the video the audio is very skippy, as in at one part it will play then go away, then play. This problem has not happened until now, any suggestions?

martinrendon
Open Preferences"Cntl + Alt + ; ", Got to Preview and check Audio Preview Duration. It might be the problem.

Similar Messages

I have no audio when I ram preview or after rendering in CS5.5

I have read all the solutions in other threads but with no avail, I'm still stuck with no audio. I had no problem like this before in CS3 and I'm currently using/learning CS5.5. I've had no audio at all. However, I can hear audio when I click on the layer that has my mp3 file on their by pressing 0 on the number keypad. But when I go on my main comp I can't hear any audio whatsoever when I press the space bar or when I press the RAM preview button. There is no audio even after I render it and yes, I did click on the audio check box in the audio module that has the lossless link to make sure it is on.

The flaw is here:
my mp3 file
Convert it to a WAV or AIFF. Nobody knows what can hapopen with MP3 and AE sucks at using those files even today.
Mylenium

Audio Problems during Ram Preview

Hello
I'm having a unique issue with my audio playback. Video playback works fine, but when I ram preview or audio preview it makes my computer stall for 10 - 20 secconds, then plays. the audio ether sped up, or slowed down (different each time). Once this happens once, I can then ram preview this area again, and it works perfectly, untill I ether go to another track, composition, or program, at which point the problems starts all over again. Anyone have any ideas?
I'm using a mac tower 8-core 2008, just recently put in an intel SSD drive for OSX Mavericks. in 14GB ram.
The audio is a wave file.
Thanks for the help!
Ian

Hi Szalam and Martlomiej, thanks for the responce.
Heres the wave file that Im using
However I feel like its not the Wave file at fault, because the issue also occurs on myfootage audio which are AACs, these are their specs
its having trouble reading the audio files for some reason. Stange.
Let me know if there are any other ideas.
Thanks for the help!
Ian

Audio distortion during RAM preview

I've been working for the past 4 months on the same computer, working on similar animations, nothing has changed much... then this happens.
**During RAM preview, my audio now sounds like an overloading robot.**
I can't seem to find similar issues on the internet to figure this out myself so I'm asking this forum. I haven't changed anything significant that could have altered my computer. I'm using:
late 2013 MacPro model
- with a SSD
- 32GB of DDR3 RAM
- 3.7 GHz Quad-Core Intel Xeon E5
- AMD FirePro D300 2048MB GPU
But I don't think it's the hardware
Old projects that I've worked on before are now doing the same thing. It's only during my RAM preview. Simple audio preview sounds perfectly fine. There is nothing wrong with the audio file because others that have worked before aren't working now.
Has anyone had the same problem?

I can't tell you what the problem was but I found the reset for all my preferences, tried it, and it worked. It solved my problem but I wish I could have found the source because I created my settings 2 months ago. I allocated more memory, changed a few settings but not within the past couple of days that would have created the problem. So i was just perplexed. I'd still like to know what the hell happened to cause this so I don't run into it again.
Thank you for reading this post

Audio glitches during ram preview after CC update

Howdy folks,
Just wondered if anyone has noticed a degradation of performance in AfterEffects ram previews since updating CC? I have. Every time I do a ram preview the sound continually cuts out. I never had this problem before, now it's consistent. Any ideas how this can be fixed? Or is it possible to downgrade AE back to the last version?
Many thanks,
Fredo

To what CC update are you referring? If you're referring to the latest version 13, what happens if you open it in version 12?

Audio playback or RAM preview is scrambled or jumps around in After Effects CS5 or Premiere Pro CS5

http://kb2.adobe.com/cps/851/cpsid_85192.html
Are there any news on this? When can we expect the update/bug-fix? This is really a major bug for me, cause I'm dealing with lots of old projects totally relying on aiff-files. I really don't want to convert all my files, re-connect it in the project and so on.
Any news?

We're working on it.

Eventual audio RAM preview problem...

AE CS3 (with Production Premium): When I include audio in my RAM previews, at first, the previews are instantaneous (as they are supposed to be), but after 15 minutes or so, AE starts to take a long time to RAM preview any comp that has audio in it. When I disable audio for RAM preview, everything goes fast again. If I shut down AE, and start again, everything is good again - but the same problem starts all over again and eventually, I have the same problem with audio. This problem happens even if I occasionally purge the memory cache. Any ideas?
I have 4 GB of RAM.
I have enabled the 3GB switch.
Win XP Pro.
Dell Precision T7400 - Dual Quad core.
Lots of HD space.
Nvidia Quadro FX 570.
Sound Card: Creative Soundblaster X-Fi

See "FAQ: Why does RAM preview only play part of my composition?".

RAM preview audio will not play through bluetooth headphones

I am using bluetooth headphones (Jaybird Freedom Sprint) to try and edit audio/video in after effects. However, when I go to Preferences>Audio Output Mapping and choose "Freedom Sprint" and click OK, close the preference window, and it will automatically go back to the default "Built in Output" when I open it back up. It will only play the sound through the Mac Pro tower I am using. Is there a way to get the headphone option output to stay permanently?? Is there a reason why it is not staying selected? Another thing I forgot to mention is that all other sounds work (like iTunes, volume up/down) through the headphones except for the audio RAM preview in After Effects. How can I disable the audio from playing through the tower? Very frustrating!
BTW - the only time headphones actually work is when they are plugged into the tower. These ones obviously can't be plugged in.
Thanks! (Screenshots provided for help)

Thanks! I definitely did try that first... (trying to find a solution with the headphones). You can't find any info about them online/their website. Regardless though, After Effects will not allow me to play the audio output through any other device except for the Mac Pro tower - even playing it through the LCD Cinema Display won't work.
Thanks for your reply

RAM Preview Audio Skipping Issue

- After Effects Version: 13.2.0.49 (This is the most recent update as I installed it today)
- OS: Windows 7 Home Premium
- So, I rendered out a clip from Media Encoder in H.264 format, and imported it back into After Effects and attempted to use RAM playback. The video plays fine without skipping, but the audio plays back partially, and begins to leave out certain parts. In other words, the audio says, "I'm going to try to spend more quality time with Luke, last time didn't go too well", After Effects plays back "I'm going to try to spend more - last time."
- I rendered out a series of clips. However, only the first two that I rendered in Media Encoder playback the audio in After Effects correctly, the rest all have skipping audio in AE only. I can play them back in Windows Media Player perfectly.
- My PC setup is: Intel Quad Core i5, 8 GB RAM, Nvidia GeForce GTX 650 series video card, 1920x1080 monitor, and 1 hard disk.
- My GPU driver is: GeForce Game Ready Driver (version: 344.65)
- I render all of the video clips using H.264 format in a .mp4 container.
- Quicktime version: 7.75.80.95
- I am only using After Effects for all of the video and audio and Media Encoder to render.
- No third party effects or codecs.
- I don't think I am using OpenGL features. (I'm not sure)
- This, as previously stated happens when I preview the already-rendered clip in the RAM preview, but it also happens when I put the rendered clips together in one video and render them out again.
- I am not doing any multiprocessing frame rendering.
- I am not using the ray-traced 3D renderer.
- If it helps, here's my output settings on Media Encoder:
Audio settings:
Video settings:
NOTE: I followed the FAQ guidelines as best as I could.

First, try exporting using one of the presets.
Second, H.264 has highly compressed audio and AE does not like that very much. If you are intending to do more editing on this video clip then you should be exporting a production format not a highly compressed MPEG format. Your audio problems are most likely caused by using some non standard settings somewhere along the way. That's why you should pick a preset and not mess with the audio encoding at all.

After Effects CS4 freezing with RAM preview audio?

Firstly, I'm on a mac. This problem just started a few hours ago after I made some system updates. When I hit preview in a comp with audio it runs through the frames, then locks up when it would normally start playing. I just get that dang spinning beach ball of doom. If I turn off the audio on the layer, it previews fine. I believe the only think I had updated when this problem began was upgrading to quicktime 7.6.2. Would this effect the RAM preview? Since the problem, I've updated AE to 9.0.2 and OS 10.5.7 with no change.
Anyone come across something similar?
Thanks

Mmh, well, seems ominous, but quite obviously QT is somehow involved. do you use any dedicated video hardware such as AJA or BMD cards? If so, the QT update may have introduced an incompatibilty with their drivers... Even if not using any such equipemnt, definitely check your QT system control panel. Also use OnyX to flush your QT components cache. They may just need to re-initilaized to function properly. Short of that I'm not aware of such issues, but anything is possible. If the issue persists, using Pacifist and downgrading your QT may be the only option. What Mac are you on exactly?
Mylenium

Audio layer causes "NOT realtime" on RAM Preview

Hi I am using a new machine I built mostly for AE and music video production.
Mac Pro 2008 - 2.8ghz 8-core
8GB RAM
AE CS3 + Nucleo Pro 2.0
Areca 1261ML
I have spent some time tuning the Nucleo & AE parameters to work most effeciently and I'm happy with the performance execpt for this issue.
What I am noticing is I get 29.97 fps playback with the RAM preview and NO audio, but as soon as I check the audio layer my fps drops to 22 fps and the audio only plays for only half of the preview. Most importantly the audio gets out of sync... It is frustratingly difficult to align video and audio like I've grown use to in AE7 & 6.5
Perhaps I'm missing a preference somewhere?
My comp is 29.97 fps 640x480. My project settings are set to 44.100 khz.
My footage is partially
60fps 640x480, 48K audio (audio unchecked)
30fps HD 720p , 48K audio (audio unchecked)
& mostly stop-motion jpg sequences taken from a 2MP camera.
1 song - 44.1khz wav
All my previous projects behave similarly.
All of this plays fine with no audio. However, even 29.97 SD alone still causes "NOT realtime" playback as soon as I check the audio on. This happens no matter if it is full-res or 1/4.
I have tried:
making sure all audio is set to 44.100Khz and also tried 48,000khz (with 48k audio)
changing the buffer size on the audio preference
swapping out the 44.100 wav with 44.100 mp3 or a 48,000 wav
Also tried switching to an external USB audio device in the audio hardware preferences - no change
still plays back in the 22fps range...
I don't remember having this issue on my XP64 quad core machine w/AE 7.0 OR with my old dual cpu XP box running AE 6.5.
As this Mac Pro is supposed to be for music video production. This is really an important issue to me and is making my work very difficult and tedious -- or I have to just render it out like in the ole slow computer days...
*EDIT* It does play 15 fps realtime -- if I tell it to skip 1 frame (just double checked - thought it played sluggishly too) But this is kinda upsetting... It should resolve my timing issues for now.

no effects on the audio -- it's just straight wav 44.100Khz.
Preferences > Audio Hardware > Built in line output
Preferences > Audio Output Mapping > Built in line output
System Preferences > Sound > Output > Built in line output
All of these settings in any configuration produce the exact same result. Presently set to "built in line output", I have also tried using the USB output and the ones labled "built in line input/built in line output" -- no success, even if all the settings are set to the same line or pointed to different audio hardware. Buffer size also has no effect.
I'm really stumped.
Also, my audio library is on a HDD by itself. I tried hard to set up the machine to not have issues like this...
I'd like to get a MOTU Ultralight for audio recording one day, but I don't think this is a $500 issue now. Plus, I doubt it will make a difference.
I mean 15fps works, but I miss stuff when I'm viewing stop-motion footage. I feel like I wasted a lot of money on hardware and CS3.

AE CS5 (10.0.1.19) Ram Preview - Audio stops and continue playing randomly

I already reported this issue to Adobe as a BUG but I want to ask here if somebody else have this problem or can confirm it.
Audio breaks/stops and continue playing randomly when 'Ram Previewing'
It happens mostly when the RAM is fully filled up with image cache files! When the Ram is not filled up totally with image cache files it happens rarely!
Steps to reproduce BUG / issue:
1. create a new composition with a length of for example 5 minutes.
2. create a new solid with size of 50x50 pixel and animate the position of the solid for a very long time so when ram previewing the whole ram/memory gets filled up with different image cache data (this is very important!). Alternatively you could use a long video file to fill up the RAM completely.
3. import a wave file .wav 16bit 48khz uncompressed which is very long for example 5 minutes.
4. insert the wave file in the earlier created composition which contain the animated solid or video file.
5. Set the work area bar (preview range) for the whole composition.
'Ram Preview' the composition until the whole RAM/memory is filled up with image data.
AE has to stop rendering because there is no more space available in RAM.
make sure 'from current time' checkbox is off.
6. listen to the audio which stops playing randomly for about 1-2 seconds and comes back and continues playing (***BUG***)
7. Now set the right handle of the composition work area bar (preview range) to less then the maximum RAM size
(less then the green cache indicator on the right side)
8. "Purge image caches" or "Purge All"
9. Ram preview the now smaller work area
10. listen to the audio. The audio breaks are gone! (***Workaround***)
Additional information:
I have the latest After Effects CS5 update installed (10.0.1.19)
This behavior is tested with different audio drivers inside After Effects CS5 (After Effects WDM Sound, Generic Low Latency ASIO Driver, ASIO DirectX Full Duplex Driver)
I also tried different Sample Sizes Buffers (alternatively to the default 2048 samples) but without success.
Reducing the amount of RAM which After Effects can access didn't solve the problem!
System:
Win7 64bit all latest Updates, 8GB RAM, CPU: intel Core 2 Extreme QX9300, nVidia Quadro FX 2700M, IDT High Definition Audio Driver v6.10.0.6227
There is no driver problem on my system because After Effects CS3 & CS4, Premiere & Soundbooth CS3 CS4 CS5 have no audio problems!
I have lots of other professional audio software like Steinberg Cubase 5.... on the same system and they all work fine.
I also turned off AVG Anitivirus and Windows firewall for testing without success.
AdobeQT32Server.exe, dynamiclinkmanager.exe, PProHeadless.exe, afterfx.exe do not get blocked by firewall they have full permission.
The CS5 Production Premium installation went fine and without errors and antivirus protection was turned off for the installation.
Any help would be nice!
Felix

Yep, I agree with craulmedia....
It's 1 month ago after my initial post and no valuable feedback from Adobe although I filled out the bug report in addition to this post and provide my email for further information.
The only reason for upgrading from CS4 -> CS5 production suite was the use of all my 8GB RAM in AE and now AE can use it but when it's using it the audio have issues.
CS5 is on the market for nearly a year and still have such essential issues... And my fear rises there will be no valuable update fixing these issues but instead Adobe forces me to upgrade later this year to CS6 in hope something change...
I have had support request for different Adobe products in the past including telephone support, web support via Adobe ID... none with success the web support answered my request 3 weeks later with the message they will look into it... time went by and in the end the result was "Yes we know it's a known bug" the bug did not get fixed for that CS version. it even exists in the next major CS release! (talking about EncoreDVD here). Once the web support answered weeks later when I was in holidays and after some days I was not able to respond they closed my case. I reopened the case but never got an answer! Telephone support is nearly waste of time because in 95% of all cases it does not help to reinstall the whole operating system and talking to people who know less about computers in general or Adobe products then my mom - it's a waste of time.
I don't want to blame here anybody for things happend in the past I just want to point out that this time I choose an other support channel (bug report and forum post) but it seems that this support channel is also a waste of time after 1 month with no valueable feedback!
I bumped up this post 2 times and thanks to craulmedia for the third time.
And now here is my fourth time *BUMP*
All I got so far is: "I saw your bug report it's in the queue"
Is it still in the queue? which queue nr. does it have? how long will it take to get any answer? is it reproducible? Is it confirmed as a known bug by Adobe? Is Adobe working on a fix? When will this fix be available? Is the fix provided in form of an update or in the next major release?
OK, I know this is a user to user forum and Adobe people only stop by in their free time and there is no guarantee for any real support.
But it started out so good in the first time...
Last 2 things I want to add here:
1. Why should I provide my email in the bug report? Sure so Adobe can get back to me for further information... but wouldn't it be nice if Adobe would be so kind to give some status report to that given email as a small present for the enthusiastic beta testers ?
2. please Adobe take a look at www.uservoice.com already Autodesk started to move there with 3ds Max.

Render and RAM Preview Skipping

Hi all-- I have a relatively simple project, just a paint stroke really, with a write-on effect of sorts that I created by keyframing the Stroke Color alpha (not with a behavior). Yet when I RAM preview or render to a QT, the result freezes and skips a few frames somewhere during the video.
It's not a playback issue; I can step by the video frame-by-frame and clearly see it pausing and then skipping forward.
Thanks!
Zak

MORE CLUES:
Camera Properties/Scale seems to cause it in my situation.
I just started using a technique of Camera scaling to control some of my shots (see http://discussions.apple.com/thread.jspa?threadID=2375595&tstart=15 for excruciating detail)
If I disable the keyframes of my camera Scale, RAM preview works as normal. If I then enable the scale change, RAM preview breaks as described above.
How odd.

RAM Preview with audio?

I'm making a music video, so I need to preview with audio to make sure timing is right................Problem is I can't get the RAM preview to render the audio file......I see the audio mu te button in the preview window but it does nothing when toggled on or off.......How do I get it to render the audio?

I recommend you check your porefs, whether AE even correctly recognizes your audio devices. if you have multiple outputs available, you may switch them around. The same may apply to your system wide settings. If e.g. you have a video capture card and it is your primary device, it may only correctly initialize when the edit program is loaded, but not AE. In addition turn off any fancies like Virtual Surround or such. The additional audio processing may throw things off track as well. For the audio files themselves, make sure the sound is on tracks 1&2, not 3&4. AE only sees stereo on the first two tracks. You may need to split the audio and import it again. Lastly open the Audio panle and see, if you not just have muted everything....
Mylenium

Warning "RAM Preview needs 2 or more frames" after scrubbing audio in After Effects CC 2014 (13.0)

The After Effects team are investigating a bug in After Effects CC 2104 (13.0) where a memory leak occurs while scrubbing audio (holding down the CTRL or Command key while scrubbing). This memory leak can eventually consume all free RAM, which can lead to the warning message "After Effects error: RAM Preview needs 2 or more frames to playback" when you try to initiate a RAM preview.
While we investigate this problem, you can avoid the bug and memory leak by not scrubbing with audio. When the problem occurs you can resolve it by closing and restarting After Effects.
http://blogs.adobe.com/aftereffects/2014/07/warning-ram-preview-needs-2-or-more-frames-aft er-scrubbing-audio-in-after-effects-cc-2014-13-0.html

Hi all, just wanted to say, I am currently working on an award show for TV and have been scrubbing audio in AE CC 2014 13.0.2.3 without issue. Why am I not having the memory leak problem?
Would like to help if I can.
Hardware Overview:
Model Name: Mac Pro
Model Identifier: MacPro6,1
Processor Name: 12-Core Intel Xeon E5
Processor Speed: 2.7 GHz
Number of Processors: 1
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L2 Cache (per Core): 256 KB
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Memory: 64 GB
Boot ROM Version: MP61.0116.B05
SMC Version (system): 2.20f18
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Kernel Version: Darwin 13.3.0
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Audio Skipping Through Ram Preview

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