After Effects doesn't preview the complete timeline

Community Beginner ,
Mar 08, 2022 Mar 08, 2022

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hi I am new to after effects and i have a problem every time I set the frame rate to 60the video starts to be slow and at some point its just repet it self without playing the full video ( sorry for my bad en )

 

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Adobe Community Professional ,
Mar 08, 2022 Mar 08, 2022

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Assuming that you didn't change the work area bar (the bar with blue handles below the numbers on the time ruler. It sounds like you computer may be having a hard time previewing your eniter timeline at your current comp settings. 

It could be a RAm issue, you can try lowering the quality of the preview in the Resolution/Downsample factor menu located on teh bottom of the comp panel. It probably says full right now, changing it to half or lower would take less RAM and allow your computer to preview a longer area.

Sometimes the preview just hangs up on the currently rendered area, pressing the spacebar to trigger preview again can usually clear this.

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Adobe Community Professional ,
Mar 09, 2022 Mar 09, 2022

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After Effects doesn't play video from a file - instead it goes frame by frame creating a preview of a video.  Anything frame to be viewed has a greenline in the timeline.  With a video at 60 fps, After Effects has 60 frames per second to create in its preview.  Once your computer's RAM is filled up, After Effects can play that part of the video and then it will loop its RAM preview again.   

In recent years, After Effects has go very good at making these previews happen and it can do all sorts of fancy tricks like caching previews, playing while creating etc..., but I think you've just hit your PC's limits.  

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Community Beginner ,
Mar 09, 2022 Mar 09, 2022

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ok I guess I will buy a new pc this pc is old thanks for your reply.

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Adobe Employee ,
Mar 09, 2022 Mar 09, 2022

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In addition to what the experts suggested, do not expect that After Effects will playback any video you throw at it in real-time if your computer has more RAM (more RAM will definitely improve the preview performance). After Effects is usually used to work on short clips (and it is very good at it) unlike NLEs like Premiere Pro. Here's an article with more info on why doesn't After Effects preview in real-time: https://community.adobe.com/t5/after-effects-discussions/faq-why-doesn-t-after-effects-preview-in-re...

Hope it helps.

 

Thanks,

Nishu

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