About expressions and keyframes

Hi people, hope you can help me.
I would like to use a variable instead of a keyframe within an expression, for instance:
Hermite(0,[0,0,0]@(certanTime - 10),[10,10,10]@certainTime)
but when I type this in an expression field the variable gets substituted for the numeric value it currently has.
I understand it would be problematic if that same variable is dependant on the time (it is animated) and probably that is why Shake won't let me keep the expression as i typed it. I won't be animating that variable i just whant an overall control on the keyframes so with just one control I can move multiple keyframes for several nodes, how can I achieve this?, is there a workarround for forcing the expression to keep the variable variable?
thanks

thanks for the feedback, as the character in PI would say: "everything can be represented and understood through numbers". I supose with a little work i could find a mathematical expression that gives me the curves i need but things would be so much easier if I could use variables in keyframe numbers. I might try the timeX solution but thing is I didn't quite understand the procedure, I thought the timeX node was to be used with the fileIn node, the other way is to manually move the curves in the curve editor but things get slow and there is a chance for missing the correct values besides the curves I want to sync have dispair values thats why I would rather to do it numerically.
thanks

Similar Messages

Combine Expression and Keyframes

Hello guys.. I hope you all are not bored with me for asking questions
Okay, I got problem (again) here.
I want to make a gear rotating in certain time.
I have googling and I found an expression to solve it.
It gave me this expression..
timeToStart = 2;
if (time > timeToStart){
      wiggle(3,25);
}else{
      value;
and I try to make that.
and what I've got here isssssssssssss.. look at the picture below..
I make my gear start rotating at 6;14 seconds. Look at the Z rotation value and its value is at 0x and 0 degree. Look at the current time. It shows 0;00;05;29
When I moved it to my selection time, look at the picture below..
Look at the current time! It shows 0;00;06;00 and my gear starts to rotating!
and look at the rotation values. It suddenly to be 1x and 240.6 degrees!
All I want is just the gear starts rotating at time as I want and it will start from 0x and 1 degree.. Not suddenly to be 1x and 240.6.. So the gear starts rotating with smooth movement..

In the future it would be best to post expression questions on the AE Expressions forum. I'll give this one a shot here anyway...
The problem is that you're defining your rotation by time and you haven't subtracted the start time from the current time. It also looks like you want to start the rotation at 6 seconds and 14 frames. You can't put timecode in as time that way. Time is a decimal value. Assuming 29.97 fps 6;14 = 6.4
Try this:
timeToStart = 6.47;
if (time > timeToStart){
      (time-timeToStart)*100;
}else{
      value;
The only other problem with your expression is that the rotation speed doesn't ramp up smoothly. You can fix this by increasing the complexity of the expression or by rewriting the expression using an expression slider to control the rpm. If you do that then you can simply set keyframes for the slider and ramp up the speed or change the speed over time with ease. You'll get a better solution. Add an Expression slider to your rotating layer, rename it to "rpm" and try this expression.
slider = effect("rpm")("Slider");//Expression Slider on this layer.
sv = 0;//start value
fNum = timeToFrames(inPoint);
while (fNum < timeToFrames()){
sv += slider.valueAtTime(framesToTime(fNum));
fNum++;
sv*thisComp.frameDuration*60
I think I got this solution from Dan Ebberts a few years ago. When you get something like this that you might want to reuse turn it into an Animation Preset by selecting all properties of the layer and choosing Animation>Save Animation Preset. It took me a moment to remember what I'd named it.

Express and ASP

Does anyone know if there is an Express extension to ASP?

I've just been learning ASP, but I don't think there's anything planned. Microsoft will certainly not worry about Express, and I don't think Oracle would support a Microsoft standard :)

Can i do Expression to keyframes and smooth via script?

hi guys, who know AE scripts can translate expression to linear keyframes via script(now i use app.executeCommand(app.findMenuCommandId("Convert Expression to Keyframes")) ; command) but , for Comman work i must select every time property of layer(opacity, position, scale, etc) where i have expression.... but i need translate very many layers, i always click on property with expression and then do Convert Expression to Keyframes its to long.., can i do something like this
for (var j= 0; j<selectedLayers.length; j++)
                   var SelLaye= selectedLayers[j];
                   if (SelLayer.transform.opacity.expression!=null && (SelLayer.transform.opacity.expression!=null) && (SelLayer.transform.opacity.expression!=null)) //check if layer have expression
                         SelLayer.transform.position.select=true; //and here i need set cursor to position, expression, etc, where i have expression and translate to linear kayframes(but i dont know how)
                         app.executeCommand(app.findMenuCommandId("Convert Expression to Keyframes")) //do translation
                         SelLayer.transform.rotation.select=true;
                         app.executeCommand(app.findMenuCommandId("Convert Expression to Keyframes"))
                         SelLayer.transform.scale.select=true;
                         app.executeCommand(app.findMenuCommandId("Convert Expression to Keyframes"))
                         //and after this also need do a smoother or something like this for decreasing linear keys for max(because app.executeCommand(app.findMenuCommandId("Convert Expression to Keyframes")) create to many keyframes)
sorry for bad English

Sup,
Earlier Dan Ebberts already wrote the answer on CreativeCow:
http://forums.creativecow.net/thread/227/13039#13041
Можно все выбранные значения добавить в массив и потом уже дергать из оттуда, ну либо вручную прописывать в скрипте. Кому как больше нравится.
AE has "Smoother" panel, but as far as I know you can`t access it via scripting using app.executeCommand(app.findMenuCommandId("Smoother")) or something.
But there is a script that makes same work , called Smart Baker. You can download it here:
http://www.creatogether.com/ctg-smart-baker

My Airport Express just stops working. Computer keeps searching for it. DSL modem is OK. Have to unplug Airport Express and replug to get it to work again. Starting happening sporaticaly some time ago, but now it is about once a day, maybe twice a day. Ha

My Airport Express just stops working. Computer keeps searching for it. DSL modem is OK. Have to unplug Airport Express and replug to get it to work again. Starting happening sporaticaly some time ago, but now it is about once a day, maybe twice a day. Has v.6.3 on it. Supposedly up to date.What's the problem?
Has anyone had that happen? Solution? (other than purchase a new one.......)

My Airport Express just stops working. Computer keeps searching for it. DSL modem is OK. Have to unplug Airport Express and replug to get it to work again. Starting happening sporaticaly some time ago, but now it is about once a day, maybe twice a day. Has v.6.3 on it. Supposedly up to date.What's the problem?
Has anyone had that happen? Solution? (other than purchase a new one.......)

Recently upgraded from Snow Leopard to Lion then Mavericks. I have Final Cut Express and when I export to Quicktime, and open to play the movie, Quicktime starts to "convert" it? What is this about????

Recently upgraded from Snow Leopard to Lion then Mavericks. I have Final Cut Express and when I export to Quicktime, and open to play the movie, Quicktime starts to "convert" it? What is this about????

My existing movies are all the following types straight from FinalCut
Apple Intermediate Codec, 1920 × 1080, Millions
16-bit Integer (Little Endian), Stereo, 48.000 kHz
This particular movie is 6.66 Gb
The new Quicktime player in OS Mavericks converts these to the following format:
Apple ProRes 422, 1920 x 1080
Linear PCM, 16 bit little-endian signed integer, 2 channels, 48000 Hz
And a movie size of 6.48 Gb
Please, please can someone tell me why?

I just have questions about the AirPort Express and how it works.

My household Wi-Fi is not the strongest in my room and I found out about the AirPort Express and I read the overvie, but I still have some questions on how it works, how its setup and other questions as well.

The AirPort Express will not wirelessly extend the signal from another router unless that router is also an Apple product.
Not sure what other questions you might have, but we'll try to answer if you want to ask.

Want to know about the AirPort Express and AirTunes

I have been contemplating purchasing an AirPort Express to stream music from my bedroom into the entertainment room in a 4 bedroom apartment. I have a wireless G D-link router which could be better but its not going to get better any time soon. As far as AirTunes goes, i have been researching it but still have questions on how it works exactly. Also, is it possible to play music through the speakers that are currently hooked up to my computer and through the stero in my living room simulaneously with this device.

So i have the airport express and i want to use internet at the same time as streaming my music to my stereo. I also have a router that i normally use for internet. My problem is, how do i use them at the same time because the airport run's or the router runs not both. I tried running a ethernet cord from the router to the airport express, and i can now recieve internet and stream music, but i want to be able to use my router instead of the express. also if i can't and have to go through the express, can i password protect the internet connection because i have no idea how to use settings for this device?

Advised to get an "extender" to be able to stream netflix, etc. through new digital tv. Apple store told me to buy Airport Express and set up WDS. Upon reading about WDS it stated cannot set up WDS with Airport Express 802.11n,

I was advised I needed an "extender" to stream Netflix, etc. through my newly purchased digital TV. Apple store advised me to buy Airport Express and choose WDS setting. When reading instructions on how to set up WDS it states cannot set up WDS with an 802.11n airport express, which is what they told me to purchase. How do I set up this Airport Express to extend my internet signal from my modem & airport to be able to stream internet capability to my TV?

I was advised I needed an "extender" to stream Netflix, etc. through my newly purchased digital TV. Apple store advised me to buy Airport Express and choose WDS setting. When reading instructions on how to set up WDS it states cannot set up WDS with an 802.11n airport express, which is what they told me to purchase. How do I set up this Airport Express to extend my internet signal from my modem & airport to be able to stream internet capability to my TV?

Questions about AirPort Express and Extreme!

I have BT Infinty and the hub is situated in the living room. What I want to do is extend the wi fi to my room which is around 10 metres away.
Are you able to connect the AirPort Express to the network and then create a network for the AirPort Express for my MacBook Pro to connect to?
I have two options and questions
1. Buy a AirPort Extreme and replace my BT hub with that. Then use an AirPort Express to extend the wi fi. But when you extend the wi fi does it mean that when I search for a wireless hotspot from my Mac I connect the the AirPort Express? Or is there a way of making the AirPort express to have a different name?
2. Use my Bt hub and buy a AirPort Express and connect it to my Infinty Connection. BUT is there a way of making a hotspot for the AirPort Express for example
my Infinity connection is named Bt-Infinty2356
I use the AirPort express to connect it and extend the wifi
THEN is it possible to make a hotspot named "AirPort-Express-Muppet" for me to connect from my Mac?
Thanks

I have no experience with the "BT Infinity Modem" and "BT HomeHub", but I assume that they are two separate units?
If yes: connect the modem direct to the Extreme by ethernet cable.
If it is a "combined" unit: connect the Extreme by ethernet cable to one of the ethernet slots on the hub.
In both cases set the Extreme to "Create a wireless network".
Use a Airport Express to "extend a Wireless Network", and extend the Extreme.
Do not expect the Airport Express to extend the BT hub wireless network, because it will not work.
In both cases you have two wireless networks: one from the Hub and one from the Extreme.
Off the record: I have the same situation in France with the "Livebox" (Orange) that is connected to a Netgear WiFi router: two network: the Livebox is just that, the Netgear is "relayed" through Netgear Routers (Switches) to five areas in the "house". The same in Switzerland, but there I used Extreme and Express units instead of the netgear units.
The Hiome Hub should work fine connected to the modem by cable, and the other network also by connected to the cable. Do not mix the different brands: trouble.

Expressions and scripting

Hi
I've several questions about programming in Ae
And I hope to find answers with you
1- What are the differences between : expressions and scripting ???
2- I'm not a programmer , so , can I be proficient in expressions ? and how ?
3- again , I'm not programmer
can I learning Java script ?

An expression is a little piece of softwaremuch like a scriptthat evaluates to a single value for a single layer property at a specific point in time. Whereas scripts tell an application to _do_ something, an expression says that a property _is_ something.
With expressions, you can create relationships between layer properties and use the keyframes of one property to dynamically animate other layers. For example, you can use the pick whip to link path properties, so a mask can take its path from a brush stroke or a shape layer object.
The expression language is based on the standard JavaScript language, but you do not need to know JavaScript to use expressions. You can create expressions by using the pick whip or by copying simple examples and modifying them to suit your needs.
Be sure to read the
"Expressions" section of After Effects Help on the Web.
Dan Ebberts has an excellent collection of example expressions and scripts and tutorials for learning how to work with expressions and scripts on his website: http://www.adobe.com/go/learn_ae_motionscripthome.
The AE Enhancers forum provides many examples and much information about expressions, as well as scripts and animation presets: http://www.adobe.com/go/learn_ae_aeenhancershome.
JJ Gifford provides several example projects on his website that demonstrate how to use expressions: http://www.adobe.com/go/learn_ae_jjgiffordexpressions.

Binding expressions and collections

<quote>
In addition to being able to read the initial value of a field from an object, value binding expressions can also be used to navigate maps, lists, or arrays. Here are some examples:
#{foo[bar]}
#{foo["bar"]}
#{foo[3]}
#[foo[3].bar}
#{foo.bar[3]}
</quote>
Could anyone explain how does it work ? Is foo is always bean ?
Isn't #{foo["bar"]} identical to #{foo.bar}
Also in "Core JSF" they say #{foo.bar[3]} doesn't work if bar indexed property of a bean.
<anotherquote>
The syntax of a method binding expression has two primary formats:
#{expr-a.value-b}
#{expr-a[value-b]}
The first format is a classic DOM-style object tree structure. The second format can be used to call a method pointed to from an object array, Map, or List.
</anotherquote>
The same question how to use the second form.

An expression is a little piece of softwaremuch like a scriptthat evaluates to a single value for a single layer property at a specific point in time. Whereas scripts tell an application to _do_ something, an expression says that a property _is_ something.
With expressions, you can create relationships between layer properties and use the keyframes of one property to dynamically animate other layers. For example, you can use the pick whip to link path properties, so a mask can take its path from a brush stroke or a shape layer object.
The expression language is based on the standard JavaScript language, but you do not need to know JavaScript to use expressions. You can create expressions by using the pick whip or by copying simple examples and modifying them to suit your needs.
Be sure to read the
"Expressions" section of After Effects Help on the Web.
Dan Ebberts has an excellent collection of example expressions and scripts and tutorials for learning how to work with expressions and scripts on his website: http://www.adobe.com/go/learn_ae_motionscripthome.
The AE Enhancers forum provides many examples and much information about expressions, as well as scripts and animation presets: http://www.adobe.com/go/learn_ae_aeenhancershome.
JJ Gifford provides several example projects on his website that demonstrate how to use expressions: http://www.adobe.com/go/learn_ae_jjgiffordexpressions.

I am trying to use macro express and adobe acrobat 9 profession keeps shutting down, why is this happening? I tried to run as administrator already as well on both Macro Express and in Adobe and it still keeps shutting down.

I am trying to use macro express and adobe acrobat 9 profession keeps shutting down, why is this happening? I tried to run as administrator already as well on both Macro Express and in Adobe and it still keeps shutting down.

same problem, it's been happening to me for a week or two now i'm thinking about backing up my documents and just wiping it completely, see if that works. Has anyone else tried this? I'm loosing time and have already lost a good few hours of work as it just crashes randomly. need help!!!
- saving these threads on my favourites cause i'm about to crash . . .

HT202159 I downloaded Dragon Express and now it won't open. It says it is INSTALLED but it won't open when clicked. Tried to trash it and start over but won't let me trash because it says it is open. But it isn't! Called mac help and they can't help e

I downloaded Dragon Express and think that it did not completely complete the download. However, it says that it has been installed and my account has been charged 50.00. However, when I click on the icon, it will not open. I have tried everything from restarting, trashing the app, but it continues to tell me that I cna't trash the app because it is open. I called apple support and they worked with me for about 30 minutes until they finally told me that the call had to end regardless of the fact that after all of their efforts, the problem was not resolved. He gave me a link to get a refund and said it was easy to navigate however, it led me nowhere. So now I am stuck with a worthless app, that does not work and a 50.00 bill to pay because I can't get support or link support to get a refund and even if I could get a refund I still have the Dragon express on my computer that does not work!!! HELP! I don't know how the app can be open when even support could not figure it out! When I restart, the finder window opens where it never did before.

Well first of all this is a public forum, so keep that in mind. The users here generally can not look up your case numbers.
If AppleCare didn't work out for you, I believe your next step is
iTunes Store Support
http://www.apple.com/emea/support/itunes/contact.html
Unfortunately, their case indexing is on a different database, and they will not be able to look up your case number either. However, their support is free, and despite it may take a few bounces of emails back and forth, there is a decent chance they may be able to get a solution.
Or... you can still try to shoot the **** with us here, which is Ok as well. But you'll have to keep in mind we can't look up your case numbers.
By the way, the link for a refund, I think is for the same link I just gave you, so on second though, mabye it's best to just go there.

I have a linksys WRT54G router that we use as a base. I want to use Airplay using Airport Express and hook up my stereo to it. How can i set up my Airport express without a PC/laptop? I just downloaded Airport utility on my iphone and ipad,will that work?

I have a linksys WRT54G router that we use as a base. I want to use Airplay using Airport Express and hook up my stereo to it. How can i set up my Airport express without a PC/laptop? I just downloaded Airport utility on my iphone and ipad,will that work? And one more thing about the setup, the linksys router shich acts as a base is in a different room as the airport express which i wanted to use for airplay. So I'm hoping to hook up the Airport express via wireless signal. If i can set it up, can someone pls help me out by posting detailed instructions. Thanks so much!

The first message that AirPort Utility will display during the auto setup will be that the Express will be confgured to "extend" the network. When AirPort Utility analyzes the network further, and sees that the Express cannot "extend" the 3rd party network, the next message will indicate that the Express is being configured to "join" the wireless network.
Once the Express is configured, if you later go into AirPort Utility to check the settings under the Wireless tab, you will see that the Wireless Mode is indeed "Join a wireless network".

About expressions and keyframes

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