[Sam Moulton]

I can get the tutorial to play fine. The podcast of the same tutorial has serious playback problems on my system (mac) with QT7.2. I’ve looked on the Apple QT forum at apple and there are a bunch of folks having trouble with mp4 files and playback.

[Sam Moulton]

got it figured out. Used the remainder function (%) to loop the slider value at 100.

Now if I could just get the thing to work with negative numbers…. but that’s another project.

here’s the working code.

val = thisComp.layer(“PositionController”).effect(“xPosition”)(“Slider”)%100;
period = Math.floor(val/10);
offset = ease (val%10, 9, 10, period*10, period*10);

x = linear (offset, 0, 100, 1, 6000)
y = value [0];

[x, y]

[Sam Moulton]

here’s what I came up with

val = thisComp.layer(“Control”).effect(“XPosition”)(“Slider”);

period = Math.floor(val/10);
offset = ease (val%10, 9, 10, period*10, period*10 + 100);

x = linear (offset, 0, 100, 600, 0)

I’ve redesigned the project a bit and am using the offset filter instead of position because of some 3D and scale issues.

Everything works except that I can’t go above 100 on the slider.

Thanks again for your help…

[Sam Moulton]

Thanks, I’ll give that a try.

[Sam Moulton]

You need to learn how to use the render queue. Check the help files. Search Rendering.

Go here:

https://www.adobe.com/designcenter/video_workshop/

Look for After Effects, then scroll down to the 2 minute tutorial on rendering.

pick an appropriate codec for real time playback. You’re rendering uncompressed which won’t playback smoothly on any system.

[Sam Moulton]

thanks ron.

I think this may be a new QT bug. Found a bunch of other podcasts that are hanging up from Photoshop sites and from one of my clients sites. If i download the mp4 files and open them in QT they hang, stutter, and crash.

[Sam Moulton]

definitely interlacing issues here

Attended a class by Chris Meyer…
Here’s the drill.. Different formats require different speed. The difference between 24fps and 23.976 with pull down means you credit roll will have to be different speeds for the two projects in order to be perfect.

I’d suggest you get it perfect at 24fps for your film out, render that, then bring the render back into AE, scale it to fit into your NTSC comp, re-interpret the footage to 23.976 fps and render out without fields. This will fix the interlacing issues.

[Sam Moulton]

Make sure your illustrator file is interpreted as square pixels. HDV will look squished unless you turn on PAR correction in the Comp window because HDV isn’t really HD….

[Sam Moulton]

possible openGL errors. Try turning openGL off

[Sam Moulton]

should have mentioned that I’m on Safari….

See the same thing on Firefox and IE for mac.

Nothing’s changed. cookies still in tact.