Expression Help

Home Page forums Autodesk/Discreet Flame and Smoke Expression Help

Viewing 11 posts - 1 through 11 (of 11 total)
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  • #200914
    N8
    Participant

    Does anyone know a good expression for camera shake. Like some one running with the camera? Any help would be Great!

    N8

    #213208
    pixelgrower
    Participant
    N8 wrote:
    Does anyone know a good expression for camera shake. Like some one running with the camera? Any help would be Great!

    N8

    you can use this . noise(frame)*5 . you can use this expression any channel you want . try different value for good result .

    #213212
    Victor Makali
    Participant

    I tryied noise but it was to random. In the end I just video taped some black tape on a white wall and tracked it. It worked great.

    #213209
    pixelgrower
    Participant
    N8 wrote:
    I tryied noise but it was to random. In the end I just video taped some black tape on a white wall and tracked it. It worked great.

    eheh =) nice solution …

    #213206
    prajjwal
    Participant
    N8 wrote:
    I tryied noise but it was to random. In the end I just video taped some black tape on a white wall and tracked it. It worked great.

    To smooth out the noise try this:

    noise(frame/10)*5

    Make “10” bigger or smaller to adjust the frequency.
    Make “5” bigger or smaller to adjust the amplitude.

    – Xavier

    #213205
    kingcoon
    Participant
    baranz wrote:
    N8 wrote:
    I tryied noise but it was to random. In the end I just video taped some black tape on a white wall and tracked it. It worked great.

    eheh =) nice solution …

    yes very nice. I usually just use another scene from the clip I am working on – do the tracking and reverse/mirror/stretch the tracking data and appy it to the new scene

    #213213
    Victor Makali
    Participant
    Xavier wrote:
    To smooth out the noise try this:

    noise(frame/10)*5

    Make “10” bigger or smaller to adjust the frequency.
    Make “5” bigger or smaller to adjust the amplitude.

    – Xavier

    Cool. I will try this.

    #213210
    Shane
    Participant

    N8er N8er,

    When your down … and out … and neeeeed a helping hand. All you gotta do is callllll. You could have called dude.

    Ok enough karioke

    Alright spunk monkey as my good friend ka would say, what you need is this:

    1)Create a dummy axis and name it whatever. Lets call ours “dummy”.
    2)Select the position folder in the animation menu so it selects all the xyz channels in the axis that you want to add jitter too.
    3)Hit your expressions and typ in:

    noise3(frame/dummy.position.z+1)*dummy.position.x

    Noise3 controls, 3 channels at once. Use the dummy position .x to control amplitude and dummy position.z to control speed. Animate the dummy and have fun.

    Enjoy.

    SB

    #213214
    Victor Makali
    Participant
    pokeitwithastick wrote:
    N8er N8er,

    When your down … and out … and neeeeed a helping hand. All you gotta do is callllll. You could have called dude.

    Ok enough karioke

    Alright spunk monkey as my good friend ka would say, what you need is this:

    1)Create a dummy axis and name it whatever. Lets call ours “dummy”.
    2)Select the position folder in the animation menu so it selects all the xyz channels in the axis that you want to add jitter too.
    3)Hit your expressions and typ in:

    noise3(frame/dummy.position.z+1)*dummy.position.x

    Noise3 controls, 3 channels at once. Use the dummy position .x to control amplitude and dummy position.z to control speed. Animate the dummy and have fun.

    Enjoy.

    SB

    Heh thanks man. Next time I will call. I just did not want to say for the 1 millionth time “Hey SB how do I…” Hey if you want you can come up here and finish what I am doing so that I can go home 🙂

    #213207
    guillem ramisa
    Participant
    N8 wrote:
    I tryied noise but it was to random. In the end I just video taped some black tape on a white wall and tracked it. It worked great.

    I think the best way to get a believeable camera shake is to “steal” motion from another clip or – as you did – film your own material and track it. Expressions are great but the “randomness” of a handheld camera is hard to emulate. You can also try the free spark that comes with flame (don’t remember the name) where you can record motion from the tablet and copypaste keyframes to your axis.

    #213211
    Shane
    Participant

    miss ya n8r

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