ADOBE AFTER EFFECTS: Forum Expressions Tutorials Creative Cloud

Time lag

COW Forums : Adobe After Effects

<< PREVIOUS   •   FAQ   •   VIEW ALL   •   PRINT   •   NEXT >>
Jonas Mortensen
Time lag
on Mar 23, 2010 at 11:11:36 pm

Hey everyone.

I have been working in after effects for some time now. And resently i bought a new camera. but when i edit my footage in after effects i sometimes experience that the movie reapeats the frame before the actual frame. like this:
Without timelag: 1-2-3-4-5-6
With timelag: 1-2-3-2-5-6

Its impossible to edit when this happens. I would LOVE help :)

PS. Sorry if my english is bad. And i could post a example video if it would be helpfull.


Return to posts index

Joey Foreman
Re: Time lag
on Mar 24, 2010 at 4:34:18 am

Sounds like your footage's field order is improperly interpreted.
Is this 1080i?
If it's set to lower, change it to upper, or vice versa.

If this doesn't help, tell us what codec your footage uses, frame rate, etc.

By the way, why are you editing your footage in AE?
It's a lot less painful in an NLE.



Return to posts index

Dave LaRonde
Re: Time lag
on Mar 24, 2010 at 2:24:10 pm

[Jonas Mortensen] "...recently i bought a new camera..."

...and I would not be surprised to learn that is some kind of HDV camera. I think you'll have to adopt a new workflow. Here's what I mean:

Dave's Stock Answer #1:

If the footage you imported into AE is any kind of the following -- footage in an HDV acquisition codec, MPEG1, MPEG2, AVCHD, mp4, m2t, H.261 or H.264 -- you need to convert it to a different codec.

These kinds of footage use temporal, or interframe compression. They have keyframes at regular intervals, containing complete frame information. However, the frames in between do NOT have complete information. Interframe codecs toss out duplicated information.

In order to maintain peak rendering efficiency, AE needs complete information for each and every frame. But because these kinds of footage contain only partial information, AE freaks out, resulting in a wide variety of problems.


Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


Return to posts index


Jonas Mortensen
Re: Time lag
on Mar 24, 2010 at 2:34:19 pm

Where can i see the codec?


Return to posts index

Jonas Mortensen
Re: Time lag
on Mar 24, 2010 at 3:04:19 pm

How do i change the codec?


Return to posts index

Dave LaRonde
Re: Time lag
on Mar 24, 2010 at 3:34:52 pm

There are a LOT of ways to do it. Too many ways to mention in a post.
If we knew about your computer, the software you run for editing, how you now capture video and any third-party compression software you have, we might be able to offer some meaningful suggestions.

System and software specifics are good.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


Return to posts index


Michael Szalapski
Re: Time lag
on Mar 24, 2010 at 3:37:07 pm

You encode the video into another format. If you have the Adobe software suite, it comes with the Adobe Media Encoder which does an excellent job. Quicktime Pro does it too. Any editing program will do it. There are tons of other programs out there.

Quicktime format with the PNG codec would be a good way to do it. (Not a PNG sequence.)

- The Great Szalam
(The 'Great' stands for 'Not So Great, in fact, Extremely Humble')

No trees were harmed in the creation of this message, but several thousand electrons were mildly inconvenienced.


Return to posts index

Dave LaRonde
Re: Time lag
on Mar 24, 2010 at 3:39:11 pm

,,,and then there's always my personal favorite: change your stinkin' HDV footage to a proper editing codec as you capture it.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]