Home Page › forums › Autodesk/Discreet › Flame and Smoke › Expression Help
- This topic has 10 replies, 7 voices, and was last updated 14 years, 5 months ago by Victor Makali.
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May 12, 2006 at 8:27 pm #200914N8Participant
Does anyone know a good expression for camera shake. Like some one running with the camera? Any help would be Great!
N8
May 16, 2006 at 6:24 pm #213208pixelgrowerParticipantN8 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 .
May 16, 2006 at 7:06 pm #213212Victor MakaliParticipantI 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.
May 17, 2006 at 9:07 pm #213209pixelgrowerParticipantN8 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 …
May 18, 2006 at 8:34 am #213206prajjwalParticipantN8 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
May 18, 2006 at 10:44 am #213205kingcoonParticipantbaranz 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
May 18, 2006 at 3:07 pm #213213Victor MakaliParticipantXavier 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.
May 18, 2006 at 6:39 pm #213210ShaneParticipantN8er 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
May 18, 2006 at 8:25 pm #213214Victor MakaliParticipantpokeitwithastick 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 🙂
May 18, 2006 at 10:24 pm #213207guillem ramisaParticipantN8 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.
May 19, 2006 at 4:00 am #213211ShaneParticipantmiss ya n8r
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