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Exported video shorter than it should be

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Alex Hoffman
Exported video shorter than it should be
on Jun 14, 2010 at 1:16:46 pm

I've got a strange problem with exporting my videos from After Effects. No matter what format I render as, my video, which is 1:07, exports as a 35 second video. I should say that, when I open it, in a number of media players, it says it's 35 seconds. In some players, it plays all the way to 1:07 (but the clock stops changing at 35), and in others, it stops completely at 35. The player I need it to play in (for a monitor system in my office), stops it at 35. Any ideas why the video may be acting like this?

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Steve Roberts
Re: Exported video shorter than it should be
on Jun 14, 2010 at 3:24:14 pm

Have you tried Rendering (using the Render Queue) to the Photo-JPEG codec and playing the result in Quicktime Player?

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Dave LaRonde
Re: Exported video shorter than it should be
on Jun 14, 2010 at 4:03:47 pm

If you're not yet running AE 10, aka CS5, I say it's the nature of the footage you're trying to use:

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, mts, 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.

I'm a Mac guy, so I like to convert to Quicktime movies in the Animation or PNG codecs; both are lossless. I'll use Apple's Compressor, Adobe Media Encoder or Quicktime Pro to do it.

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

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