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after effect preview not work

Community Beginner ,
Apr 07, 2018

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Hi

yesterday this problem happen when press play bottom the review not work

also timeline not moving

i use AE cc 2018

Windows 10 64 bit

Ram 8 GB

you can see the play bottom is square shape and no motion appear

Untitled-2.jpg

When I leave AE open and take a break, a lunch (or leave it open overnight ), when I come back and hit the spacebar, it will play it once without sound and when I stop it and try to play it again, it does nothing. I can scroll the timeline and it composition updates, but can't play it back anymore. When I purge all the cache and memory it cleans it up and it also caches/renders it internally (green bar fills up) but it won't play it. When I check "cache before playback" on Preview panel then it time cursor will follow the caching process, but no way to really play it back in realtime with sound.

Restart always repairs it. My fellow animator next to me has the same issue.

Not really the dealbreaker type of thing, but kind of interrupts the flow every time it happens.

But, I figured it out

It seems to be an issue with audio hardware (and monitors connected with audio-supported cables). When I (1) removed external devices from windows audio settings and (2) changed audio hardware (File > Preferences > Audio Hardware) back to Speakers it started to playback my preview (AE needs restart to get the audio back though). (3) If you have headphones connected to the monitor audio output, then

This kind of explains the issue (and my situation after leaving AE open):

"When an audio-supported video cable is being used such as a DisplayPort or HDMI cable, Windows may change the default audio device to the audio-supported cable thinking another audio device is being used. The issue may be seen to occur when a portable is coming out of sleep as the system is detecting the audio-capable cable first."

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after effect preview not work

Community Beginner ,
Apr 07, 2018

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Hi

yesterday this problem happen when press play bottom the review not work

also timeline not moving

i use AE cc 2018

Windows 10 64 bit

Ram 8 GB

you can see the play bottom is square shape and no motion appear

Untitled-2.jpg

When I leave AE open and take a break, a lunch (or leave it open overnight ), when I come back and hit the spacebar, it will play it once without sound and when I stop it and try to play it again, it does nothing. I can scroll the timeline and it composition updates, but can't play it back anymore. When I purge all the cache and memory it cleans it up and it also caches/renders it internally (green bar fills up) but it won't play it. When I check "cache before playback" on Preview panel then it time cursor will follow the caching process, but no way to really play it back in realtime with sound.

Restart always repairs it. My fellow animator next to me has the same issue.

Not really the dealbreaker type of thing, but kind of interrupts the flow every time it happens.

But, I figured it out

It seems to be an issue with audio hardware (and monitors connected with audio-supported cables). When I (1) removed external devices from windows audio settings and (2) changed audio hardware (File > Preferences > Audio Hardware) back to Speakers it started to playback my preview (AE needs restart to get the audio back though). (3) If you have headphones connected to the monitor audio output, then

This kind of explains the issue (and my situation after leaving AE open):

"When an audio-supported video cable is being used such as a DisplayPort or HDMI cable, Windows may change the default audio device to the audio-supported cable thinking another audio device is being used. The issue may be seen to occur when a portable is coming out of sleep as the system is detecting the audio-capable cable first."

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Adobe Community Professional ,
Apr 07, 2018

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You should have taken a screen grab of a larger piece of your AE interface - there's quite a lot of relevant details that are cut off from this screen grab. Having said that, this is likely a user-error issue - your Timeline Indicator in the Comp Panel reads with a negative number - so, you must have moved it there by chance.

Have you tried previewing other Compositions? Any issues with those?

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Community Beginner ,
Apr 08, 2018

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yt.jpg

yes i try to preview another composition and still not working

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Adobe Community Professional ,
Apr 08, 2018

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You'll drive me blind before your issue get's fixed!
Can you not take a larger-sized screen grab???

Any error message(s)?

What happens when you initiate a Preview?
How are you initiating a preview?
Please be very specific with your reply. AND MUCH LARGER WITH YOUR SCREEN GRABS. My eyes will thank you 😄

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Community Beginner ,
Apr 08, 2018

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gfgf.jpg

@Roland Kahlenberg

thank you for your interesting

no error massege

the problem in simple words

when i initiate a Preview it is not work and red line not move

i press 0 and space also the play bottom and no motion in timeline or composition screen

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Adobe Community Professional ,
Apr 08, 2018

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Everything looks OK with the exception that you have Toggle Pixel Aspect Ratio Correction turned on - this is the icon/button at the bottom of the Composition Panel with a box and a line with two arrows at either end of the line. You should not have to switch this on unless you know you have to and it's quite infrequent that you have to.

What if you have a very simple Comp/Timeline - something like a single Text Layer with a Text Animation Preset applied? If this too fails to Preview, then I suggest you look at getting new drivers for your GPU. And if that installation is not required because you already have the latest drivers then uninstall AE and re-install it.

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Community Beginner ,
Apr 08, 2018

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thank you

i reinstall AE software many times and problem still happen

also i use adobe cleaner and no affect 

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Adobe Community Professional ,
Apr 08, 2018

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I'm sorry but I'm at a loss. Someone knowledgeable needs access to your system, to have a closer/hands-on look at AE and any other software that is hampering your work. If you haven't already, do get in touch with Adobe's Tech Support.

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Adobe Community Professional ,
Apr 08, 2018

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BTW, as a last resort, can you do a screengrab of the entire Preview Panel - it may be good to see how you've set up your Preview.

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Community Beginner ,
Apr 08, 2018

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2018-04-09_00-31-31.jpg

in addition, when i run the software it give me a chance to preview one time then stop working

@Roland Kahlenberg

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New Here ,
Nov 18, 2019

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Thank you very much, Roland! You helped me a lot and solved my problem!

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New Here ,
Jul 01, 2020

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Yea this is my problem too.... 

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Adobe Community Professional ,
Apr 08, 2018

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Hmmm, those Seamless Transitions are delicious. You have great taste! 🙂

A) I'll need to look at your Preview Panel. So, select the Preview Panel and drag its bottom so that all of its content can be seen - then take a screen grab to share with us, here.

B) Have you checked that you have the latest drivers for your graphics card?

Please go through A and B before you reply.

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New Here ,
Apr 09, 2018

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HI Me also not the boss but please try the following,

it has been happens to me once but i resolve by the following,  Even it is happens please let me know.

1. Check your render try to change both GPU and CPU ( see first image)

2. Disable Internet while you working ( you may think this is crazy but it worked some time for me)

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Community Beginner ,
Apr 09, 2018

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thanks  for your interesting @khadarshameer

I try to disable internet but nothing happen

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New Here ,
Apr 09, 2018

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What i can do next is send me the file shown in the picture so i can compare with mine....[

Also i hope you already try these following things.

1. Check the disk Cash are enough...[If your media Cash HDD have Bad sectors it could stop, most probably AE will Quit for this situation. ]

2. Purge everything from File>Edit>Purge>All Memory and Disk Cash..

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Community Beginner ,
Apr 09, 2018

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I can't find this file

There is no file with  same name

@khadarshameer

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Adobe Community Professional ,
Apr 09, 2018

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I'm sorry. I can't see any issue with your set up. Someone needs to see exactly what you're doing and also take a look at your setup.

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Participant ,
Jan 15, 2019

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Cache

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Explorer ,
Apr 09, 2019

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I have similar issue, after working for a while preview playback just stops playing back, AE caches but do not play it. Restart makes it works again, but I noticed when I set the Ray/tracing (Pref > Preveiw > GPU Inf > RT) engine from GPU to CPU and then back to GPU it also solved the issue. Looks like some GPU error viewport error.

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Explorer ,
Jun 17, 2019

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Did the trick once, but here I am again...happens every time when I lock the computer or leave it be for a while.

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New Here ,
Dec 17, 2019

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i had the same prob and when i disable internet it worked

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Community Beginner ,
Apr 09, 2018

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2018-04-09_14-31-29.jpg

yes, I have latest drivers for graphics card

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New Here ,
May 12, 2018

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I have had the exact same problem. The fix I've found is to switch "cache before playback" on, in the preview window and then set the resolution to full in the comp viewer. I also do a purge as well. This seems to unplug whatever is clogging the system.

Just wanted to help!

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New Here ,
Jul 16, 2018

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I had this problem as well.  Your advice did the trick.  Thanks!

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Community Beginner ,
Nov 03, 2019

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This still works! Thank you so much 🙂 

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New Here ,
Jul 11, 2018

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I had the same problem. I have an external audio card, and just went to the defnitions> audio hardware and changed the device and simple started to work!

I hope it helps!

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New Here ,
Nov 05, 2018

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I had this problem for two years now, and your advice was the solution! THANKS!!!  

I guess Adobe wont fix this, but we can only wish.

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New Here ,
Jul 07, 2020

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There are posts all over the internet about this issue and you have solved it.  It is a simple audio hardware setup problem.  I switched my audio hardware and BOOM, perfect playback.  I owe you a beer!!!!

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New Here ,
Jul 08, 2020

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sua solução funcionou! 

tenho uma drive que aumenta o volume do pc mais que o normal e acho que isso estava dando conflito no after, fui em preferencias>audio e troquei o reprodutor de audio, e funcionou ❤️ 

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Participant ,
Jan 15, 2019

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In my case (I am on a Mac), deactivating 'Adobe DV' brought some relief.

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New Here ,
Nov 29, 2019

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Hi . I am having the same issue. I tried all way but couldn't  fix it. can anyone help me with this problem.

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New Here ,
Dec 29, 2019

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I had the same problem and tried all the above on 2020 ver nothing did work and finaly I found out it was because of pixel aspect ratio which was set wrong and made preview not work correctly.

 

anyway I changed pixel aspect ratio  from composition setting to square pixels and it worked!

maybe preview player is not compatible with change of aspect ratio.

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New Here ,
Jan 15, 2020

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I just did that and nothing seems to be working. It's really frustrating

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Engaged ,
Mar 20, 2020

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I had the same problem on PC, and same help came in turning off ADOBE DV.

 

Adobe DV is the engine adjustment used when playing back older DV or HDV formatted footage that has interlacing and pulldown applied.  It happened also in Premiere Pro.  I did get this working again in premiere pro, with adobe DV on, by doing several things.  Here's what you can check:

 

1.  If your audio system has special drivers or a special enhancement system, turn this off before starting the app.  These look like driver headers to adobe and it will pass the wrong data set to them, hoping for a reply, but will get nothing.  The reply is a synchronization protocol that allows the clocking for the AV to be aligned.

2. Same as above for video system.  If you go over HDMI, make sure your audio system goes to your onboard speaker system and that this is set before you turn on the app.  HDMI will carry audio data in most systems and they will automatically choose it.

3. Make sure you haven't altered the "secret menu" at all.  It has several values that affect this output, and will cause previews to fail.

4. Make sure number and caps lock are off.  They apparently affect the way AE and Premiere render previews and especially the render queue.

 

I have been working on old VHS rips for some clients, and an update to the software made this barely workable.  Came to find out that the subsystem for DV content has changed in several systems, as IEEE1394 support is being phased out.  However, the DV support is still there over thunderbolt and USB3, you'll just have to pipe it through analog capture devices.

Again Adobe DV is just an engine adjuster that allows you to play interlaced frames on a progressive frame system, so the clocking is adjusted to maintain sync.  Turning it off really doesn't do much in my opinion, but when zoomed in, there is a very large difference.  The blending is just not there, and the footage looks blocky.  When played at actual pixel value, no change.  With DV working, there is some smoothing applied, and the images are more natural looking.

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