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After Effects CC 2014 rendering random black frames

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Keith Dennis
After Effects CC 2014 rendering random black frames
on May 25, 2015 at 8:04:29 pm

I've been using After Effects CC2014 for over a year without incident. About five weeks go, I started getting random black frames in my renders. It's not the whole frame that goes black. My project is a text layer on top of a Quicktime ProRes 4444 MOV. Just the quicktime layer is black. My MOV and comp's framerates match.

I can't account for what changed five weeks ago. I haven't updated my operating system. I believe I did an AE update around that time but I can't be sure.

I haven't found many people with the same problem and the ones I can find are really old. I clean out my disk cache and conformed media cache before each render and it seems to have no effect. Sometimes I get the black frames and sometimes I don't.

I don't know what else to try. Has anyone else had this problem?


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Walter Soyka
Re: After Effects CC 2014 rendering random black frames
on May 26, 2015 at 1:41:36 pm

[Keith Dennis] "It's not the whole frame that goes black. My project is a text layer on top of a Quicktime ProRes 4444 MOV. Just the quicktime layer is black."

What are your system specs?

This suggests to me that the 32-bit QuickTime helper application is occasionally failing to pass a frame to 64-bit After Effects. Do you have any anti-virus or network monitoring software installed?

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive [twitter]   |   RenderBreak [blog]   |   Profile [LinkedIn]


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Keith Dennis
Re: After Effects CC 2014 rendering random black frames
on May 26, 2015 at 2:18:17 pm

I'm running:

Mac Pro (Late 2013)
3.5 GHz 6-Core Intel Zeon E5
64 GB 1866 MHz DDR3 ECC

I'm not running any anti-virus or network monitoring software, except for my standard Mac Firewall.


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Walter Soyka
Re: After Effects CC 2014 rendering random black frames
on May 26, 2015 at 2:51:06 pm

Are there any effects applied to the video?

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive [twitter]   |   RenderBreak [blog]   |   Profile [LinkedIn]


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Keith Dennis
Re: After Effects CC 2014 rendering random black frames
on May 26, 2015 at 3:16:15 pm

There are no effects on the video. It's a very simple project. The text has a drop shadow and wipes in using solid layer as an alpha channel.


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Keith Dennis
Re: After Effects CC 2014 rendering random black frames
on May 26, 2015 at 3:27:49 pm

Every time this error happens, the frame has been black. One time (out of the dozens) it was a random frame from earlier in the video.


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Walter Soyka
Re: After Effects CC 2014 rendering random black frames
on May 26, 2015 at 3:40:06 pm

[Keith Dennis] "Every time this error happens, the frame has been black. One time (out of the dozens) it was a random frame from earlier in the video."

Does it still happen if you transcode that movie file to another format?

Walter Soyka
Designer & Mad Scientist at Keen Live [link]
Motion Graphics, Widescreen Events, Presentation Design, and Consulting
@keenlive [twitter]   |   RenderBreak [blog]   |   Profile [LinkedIn]


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Keith Dennis
Re: After Effects CC 2014 rendering random black frames
on May 26, 2015 at 3:54:36 pm

I haven't tried that yet. My next step was trashing my preferences to see if that makes a difference. If it keeps happening, I'll try transcoding that file into something else.

Thank you for your help.


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Keith Dennis
Re: After Effects CC 2014 rendering random black frames
on May 29, 2015 at 6:01:37 pm

Just to close the loop on this. After trashing my preferences (all of the adobe .plist files in both my library and the root library, the black frame problem went away for four days. This morning, I had one pop up again, so I again trashed my preferences and it hasn't happened since then. So for the time being, I'm going to make it a habit of trashing my preferences every morning and we'll see if that keeps the black frames away.


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Kevin Monahan
Re: After Effects CC 2014 rendering random black frames
on Jul 6, 2015 at 3:53:07 pm

Hi Keith,
Thanks for reporting on the issues. You can file a bug report here: http://adobe.ly/ReportBug

Thanks,
Kevin


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