anyone haveing black flash frames on their renders?

[Mylenium]

What file format? What CoDec? Really, you cannot expect anyone to help you without being more specific. You know, I’m not telepathic (yet).

Mylenium

[Pour Myl

[Steve Roberts]

While we wait for more info, I’d suggest that if you can’t solve the problem, render to a still sequence, check the sequence, then re-render any black frames with the proper frame number in the sequence.

Steve 🙂

[Joe Carusoe]

woah!
most tangential and entertaining thread ever!

so, if anyone’s still reading this very odd thread, i’ll clarify…
rendering a full (non-trimmed) comp to lossless (animation codec) quicktime, 720 x 405. nothing funny going on.
but i’ve seen this for a while now… every so often (fairly frequently- i’d say 1 in 8 renders) has a random black frame in it. if i re-render the comp, the comp again has a 1 in 8 chance of having another black frame. so the odds are pretty good that it won’t if i re-render it. if it does, the frame is never in the same place as it was.
so it must be a system or app issue, and nothing specific to do with the comp.
oh, and it’s a dual processor G5 mac.

so, great swami, rain wisdom down from the mount!!!
your servant, brent

[Robert Diggins]

I have had this problem since day one and spent a lot of time Google-ing it. Others seem to have the same problem, but I can’t pick any answers out of any of the threads.

I am VERY new to After Effects, and this has been going on with my last machine, and just last week installed CS4 on a new 24″ iMac, only to have the same problem,,, Single BLACK frames inserted randomly throughout.

As I said, I am a beginner at AE, so the very few SIMPLE things I try ALL have these random black frames.

I can to a very simple Stabilization, noting more, and still end up with these black frames when I
“Scrub?” through it. And after Rendering it, the black flashes are in the movie in Quick Time.

Anyone have an explanation yet?

Thanks

[Adrian Henderson]

Greetings all, got the same issue.

No solution to this???

There has to be some little thing I’m not getting here…

I’ve got a green-screen clip of a guy, that’s been Keyed out with Keylight1.2.
It’s on top of a jpeg image, has an audio clip, and setup is custom “Desktop Video” as it’s for online viewing. 500x430px

I’m wanting to get it out to .mov with “Compression type: None” at 25fps…
“Channels: RGB + Alpha”; Millions of Colours; Premultiplied

BUT…

my rendered mov has random black flashes quite often…

I’ve checked my trimming and it’s def not that, as the flashes are frequent.

Here’s hoping some fantastic, North American fictional great will offer a bag of jingling suggestion coins, along with insults for my future second wife…
😉
Thanks for any and all response…

[Eddy Bergman]

I see this was posted in 2006 but I’m having the same problems with AE CS5
I recently made a map animation a la Indiana Jones and when I rendered it out in best quality AVI possible, there were two frames that were partially black.
I’ve had this happen before actually, usually it’s not black but like TV snow. Just a few frames in an otherwise perfect render.
If anyone knows how to solve this, I’d very much appreciate it.

[Tomas Chlubina]

had the same problem and noticed that after restarting the program its good for one or two renderings so I tried to set the purging after 20 frames in secret settings in preferences (by holding shift and clicking on general) and that helped

[Ben Reckelhoff]

Isolated the problem to a specific layer by adding a new comp with a white 2d circle over transparency. Moved said layer to the top of the comp and placed it over the black frame. Moved the layer down, layer-by-layer until I found where the black frame was originating. Seemed to be coming from an effect-heavy layer.

HOW I FIXED IT:
Copied all effects from the problem layer onto a new layer in a new comp and pre-composed it separately. I also cleared out all unused keyframes.
Reintegrated this precomp into the project and the black frames were gone.

Still no explanation, but some insight into a possible solution…

[Nancy L. sutton smith]

Those guys at the head of this post were a bundle o laughs.
Yes, I have been having this problem a lot. I was blaming it on the laptop I am using when I can’t be on my desktop. My work around is to re-export the section where the black flash frame appeared. I just exported a 40 second comp – completely standard AVI and had 4 big black hits in various places. Very annoying. When I re-render that small area it’s fine so I just patch the ‘holes’ as it were.

Nancy L. Smith
President
Sutton Bay Media Company

[Lev Kalman]

Hi all,

I just ran into the same issue in AE 6.
I’m compositing 16 videos into a single frame and occasionally, and unpredictably, a black frame would appear in one of them when I’d render a movie. It’s a one minute video and the black frames would get more frequent as the video went on.
I’d go check the source video in AE, and sometimes (but not always) that black frame would be there. In that case, replacing the footage with itself solved the issue, temporarily.
To anthropomorphize, it seems like sometimes AE just couldn’t find the frame in time while rendering. Maybe this is because the source videos are H.264.

Anyway, Tomas’ suggestion: “set the purging after 20 frames in secret settings in preferences (by holding shift and clicking on general)” definitely helped. The problem has greatly decreased.

Any other suggestions on what else can help?

Thanks
Lev