after effect preview not work

Community Beginner ,
Apr 07, 2018 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

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correct answers 1 Correct answer

Explorer , Jul 03, 2019 Jul 03, 2019

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

...

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Adobe Community Professional ,
Apr 09, 2018 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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Engaged ,
Jan 15, 2019 Jan 15, 2019

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Cache

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Explorer ,
Apr 09, 2019 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 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 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 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 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 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 Nov 03, 2019

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This still works! Thank you so much 🙂 

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New Here ,
Jul 11, 2018 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 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 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 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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New Here ,
Aug 28, 2021 Aug 28, 2021

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This worked for me. Thank you very much

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Engaged ,
Jan 15, 2019 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 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 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 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 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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Community Beginner ,
May 08, 2019 May 08, 2019

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I recently ran into the issue and discovered that my AE audio preferences were set to headphones that were no longer plugged in. Once I changed to the default setting. preview worked fine.

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New Here ,
Jun 30, 2019 Jun 30, 2019

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Hi guys, I ran into the same issue, I went to Edit > Preferences > General: I clicked on

it worked afterwards but removed my custom composition presets.

Hope this helps someone.

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Adobe Community Professional ,
Jul 01, 2019 Jul 01, 2019

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Migrate Previous Version Settings is an option but it'll only work if your previous settings were working and of course it depends on the relevant settings you had, previously. And as you've realized, your importing previous settings will delete all of your current preference settings. So, this isn't an ideal solution - the ideal solution is to set your preferences appropriately and ensure you have viable driver version for your GPU.

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Explorer ,
Jul 01, 2019 Jul 01, 2019

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the ideal solution is to set your preferences appropriately and ensure you have viable driver version for your GPU.

I guess we all agree but please help us out then, what are the appropriate settings and viable drivers, because most of us I think have tried many combinations...I till have to restart my AE at least 2-3 times a day to get my preview playback working. I just update AE to 16.1.2, maybe it fixes the situation, let's see...

Using

NVIDIA Studio Driver SD430.86May 27, 2019

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Explorer ,
Jul 02, 2019 Jul 02, 2019

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Back from lunch and again no playback, sadly.

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Adobe Community Professional ,
Jul 02, 2019 Jul 02, 2019

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I've said previously, it's best that you contact support, to have someone take a closer, hands-on look at your system and this includes taking a look at your OS settings and AE settings.

Meanwhile, when you say "no playback", exactly what happens when you initiate a Preview?

What happens in the Timeline, does the Preview Time Indicator (vertical red line) move across the timeline?

What happens in the Comp Panel?

Please take a screen grab of your Comp and Timeline Panels.

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