|Flickering in animation||Huck||9/12/09 7:33 AM|
I exported an animation to an .avi file. When I play it the lines
have a flickering quality. Does anyone know why this is? Is there a
way to avoid it?
|Re: Flickering in animation||r||9/12/09 8:42 AM|
are you using a mac?
|Re: None Flickering in animation||Colin Holgate||9/12/09 8:55 AM|
Would have to see it to be sure, but it could be some sort of moire
"r" asked if you're using a Mac, but the Mac version doesn't do export
Any chance you could post one of your animations somewhere for us to
|Re: None Flickering in animation||Huck||9/12/09 11:33 AM|
I uploaded the file, RiverDiag-6Story.avi, to the Files section, but I
don't see how to make a link to it for you here. (Excuse my
complaint, but Google Groups is so lame in this respect. Other forums
make it easy to attach a file to a post).
|Re: None Re: Flickering in animation||Colin Holgate||9/12/09 12:20 PM|
> I uploaded the file, RiverDiag-6Story.avi, to the Files section, but I
That's ok, I coped!
The problem seems to be compression artifacts from using Cinepak as
If changing the codec to Microsoft Video 1, or to Full Uncompressed,
Here are some files to illustrate the issue. First an export of my
and here is the same scene made with Mac SketchUp 7, as a QuickTime
If the first of those two links work, then no need to try the second
The AVI one is 3.6 megabytes (for 4 seconds), and has the twitchy
Cinepak was developed about 16 years ago, and is sometimes included in
|Re: None Re: Flickering in animation||Colin Holgate||9/12/09 12:31 PM|
On Sep 12, 2009, at 3:20 PM, Colin Holgate wrote:
It seems our server doesn't allow direct linking to AVI files. Here's the Cinepak AVI saved as a QuickTime file:
Compared to the 1/7th of that size H.264 movie:
|Re: None Re: Flickering in animation||Huck||9/13/09 3:27 PM|
Both of those look great compared to what I am getting. But are those
only available from the Mac SU? Or, how did you get them? and how
can I get that quality?
|Re: None Re: Flickering in animation||Colin Holgate||9/13/09 3:38 PM|
> Both of those look great compared to what I am getting. But are those
Hopefully you can see how much worse the fullqualityboxes one is
Unless someone can say otherwise, exporting under Windows is stuck
|Re: None Re: Flickering in animation||Huck||9/22/09 5:22 PM|
I think I discovered why the flickering line problem occurs. A thin
line at a slight angle across the screen “steps” down to the next row
of pixels as it crosses the screen. In some places a grey surface
next to the line may be white for a short distance at the “step”.
When the image moves, these steps move. Where 1 row of pixels is
black and in the next image the next row is black, your eye may put
them together causing them to appear to be 2 pixels wide. All these
changes combine to display a flickering line. Well, that is my guess.
I don’t know what could fix this. Any ideas?
|Re: None Re: Flickering in animation||Colin Holgate||9/23/09 6:18 AM|
> I think I discovered why the flickering line problem occurs. A thin
What you were describing is called aliasing. It's what antialiasing
|Re: None Re: Flickering in animation||Huck||9/23/09 12:39 PM|
I tried selecting File>Export>Animation, then click the “Export type”
dropdown menu and select “jpeg”
This gives a series of jpeg images. The quality of the images looks
better and when I hand animate them with Windows Picture & Fax Viewer,
it looks better.
Do you know anyway to combine these jpegs into a video file?
|Re: None Re: Flickering in animation||Colin Holgate||9/23/09 12:57 PM|
Use PNG rather than JPEGs, that way you're dealing with perfect
pictures and not compressed ones.
I would use QuickTime Player 7 (Pro version, $30). That has an Open
Maybe there are PC tools that can do the same? Others here may well
|Re: None Re: Flickering in animation||Huck||9/24/09 9:55 PM|
I used Quicktime Player (Not Pro as far as I can tell, but I did buy
Pro a long time back, but it doesn't seem to be on my laptop which is
what I'm using). It has a File>Open Image Sequence, which will play
the jpeg images I generated from Sketchup (File>Export>Animation,
select "Export Type" = jpeg). They are way better than the .wmv files
I generated from Sketchup.
Now I just need to figure out how to put them into a single video file
that an ordinary person can play.
|Re: None Re: Flickering in animation||Colin Holgate||9/25/09 8:32 AM|
and click on Account (between the Help and Cart buttons on the right).
Once you're up and running with QuickTime Pro you can then do an
|Re: None Re: Flickering in animation||Huck||9/25/09 11:03 AM|
I guess I did have Pro installed. I just saved the movie and uploaded
it. It is in Files with the name RiverDiag-6StoryFromStills.mov
Can you tell me how to make a proper link to files uploaded to Files?
I’m thrilled with the quality but the size is scary. This file is 37
images, 1280x960, played back at 29.97 FPS. The file is 5.2MB for a
bit more than 1 second of play. Also, Windows Media Player won’t play
the file which is .mov. Any idea how to get it into a file format
that is more available to anyone?
|Re: None Re: Flickering in animation||Huck||9/25/09 11:06 AM|
|Re: None Re: Flickering in animation||Colin Holgate||9/25/09 11:40 AM|
I hadn't reported back yet for two reasons. First, I don't think the
antialiasing out of SketchUp is very good. Also, I couldn't work out
how to animate through all of the scenes, only from the first to the
Your Save As file still would have the large JPEGs in the video track
It's at 720x540, which is smaller than your original size, but in
That link, which I hope you can play, uses H.264 for the video, and
|Re: None Re: Flickering in animation||Huck||9/25/09 9:57 PM|
To animate all the scenes:
highlight Scene 3 and holding down Shift highlight all through Scene
Then click "Include in Amimation"
Then play or export and it will give the whole animation.
I downloaded the file. However, Windows Mediaplayer won't play it.
QuickTime would play it.
I tried the Export to Web but what I got didn't seem to have an mp4
file at all. What did I do wrong?
|Re: None Re: Flickering in animation||Colin Holgate||9/25/09 10:06 PM|
> I tried the Export to Web but what I got didn't seem to have an mp4
I renamed it in the hope of making it work for other MP4 players. Oh
|Re: None Re: Flickering in animation||Colin Holgate||9/26/09 7:55 AM|
I'm going to start a new topic in a moment to explain the steps I took
in my last test. I'll title it "how to export nice animation". I'm
just doing that to help out the people who subscribed to these threads
and can't get unsubscribed!