get that rythm'

[Madfox]

I have been puzzling a bit with a metronoom, to see if it could help me adding some sense to my dance acts. For some reason I can get them only randomly catch a rythm. So after making a metonoom I caught up with another effect. A metronoom has a division of 60 beats per minute. So it is easy to find an animation pose that fits for 1 beat at 30 frames in a second. With 120 beats p/min it would become 2 beats at 30 frames in a second. Then it begins. 88 beats per minute should be possible  at 4 beats p/sec, but I can't divide 30 frame in 4. It would become 7.25 frame and that's only possible when I start shortening the act movements. Or I could change the wav length of one sound beat to another lenght than 1 second. In the sound screen I can't overcome the lenght of sound shorter than 1 second so this won't help. Sofar I have this reult of one animation that goes for one second, but the repeat function gets somewhat delayed.

It is not my intention to make an error calling. I'm just playing with the intention how close can I come with a metronome being reliable in an animation . Didn't know it took that precaution.

 

metronoom.zip

[robcat2075]

 

 

Quote

88 beats per minute should be possible  at 4 beats p/sec

88 bpm is really 1.46666 beats per second

4 beats per second is 240 bpm

 

To get the number of frames per one beat at any particular tempo we can do ( frames/sec) / (beats/second)   or frames/sec  *  seconds/beats

(30 frames/sec) * (60 seconds/ 88 beats) = 20.454545... frames per beat which is quite awkward for animation. It can be done but it is awkward.

if you want something like 88 bpm, then 90 bpm would fit well into 30 fps ... 1.5 beats per second or one beat every 20 frames which is what you appear to have animated in the metr0_tmp088.act

 

If that doesn't answer your question, ask again!

 

Here is a note about animating pendulum motion...

 

[Madfox]

Thanks for your reply, RobCat. It was more a sort of a try-out to see how I could obtain a reasonable effect of the metronoom. I took examples of one seconds, while my experience tells me it will be more convienent if there are more frames available. Like a range of one minute and 60 beats. Now the repeat function of the avi makes it a bit unstable. Good to know that the swing off the matchstick can be altered that way.

 If 88 bpm would be 22,5 frame per sec It could be possible to make an animation of 2 seconds with 50 frames. Then shrink the animation chor halfways so it comes back on 22.5 frame. Of course positioning on that point wouldn't be possible, but it would come close to the division of 7 parts between 1 and 2 beats per second.

Thanks for the hint!

😊

[robcat2075]

Quote

If 88 bpm would be 22,5 frame per sec

you really mean 22.5 frames per beat, right?

[Madfox]

Yes, one beat in 22.5 frame.

[Madfox]

As I was testing for a way to get my sound beat right on a 3 minutes track I stumbled on a strange side effect.
I had imported a sound and made sure the beat was somewhere right on track.
When I rendered the file I got a scrambled screen with a shreeking noise.  I thought I did something wrong.

I just wanted to delete the file untill I noticed this was only on the first 48 sec. Then the file rendered well with the according music.
Can't find a reason for the effect.
When I render on mini all goes right.

On VGA the scrambing starts again untill 48 seconds. (?!)
Better watch the audio on test00_1.avi.

 

 

 

[robcat2075]

• Does the error always happen when you render on the PC?
• The appearance of these is quite different. What else did you change?

 

• Try rendering to AVI "Uncompressed" on the PC. Then compress in some other app.
• I rarely render to a video format. I usually render to an image sequence and then join the sound in some editing app.

 

[Madfox]

Thanks for your attention, Robcat!

It is a bit of a way of doing. As long as I use Animation Master I use avi files to render. Never had any issues with it. 
Now I am using netrendering it changes things, as my usual VGA resolution changed to 1920x1080.
The reason I like to render to avi is because then I can udse the sound to check the animation frames.
Then I can use this "neutral" file for use with alpha's or other layers, as long as I have a checkpoint for the metrum.

Now I'm a bit diffused, as the vga render won't come to a clean solution without a scrambled screen.
Mini works, but tga.avi starts already getting wicked.

I can make a jpg file of the animation , but then again the synchronic of the beat is hard to refind. 
At least not as hard as with rendered avi/sound.

But yes it worked.
Rendering to image file indeed includes the sound later.
 

[robcat2075]

I'm not sure what "tga.avi" is.

[Madfox]

Avi at size of tga.

Funny as I don't have any trouble in version AM v16.

[robcat2075]

Did you try AVI uncompressed?

[Madfox]

I always use oncompressed. Others with codec just return strange side effects.

Not sure why this happens. I made a 1240x1024 render with sound, but after 6 hours rendering only gave a file that won't display The last frame render gave an error. Something like a driver not available. 

I know I can make jpg file of it and add sound later, but it doesn' t have the same accuracy as the avi with sound.

The reason I am so keen on this format is because then I have a key line as start point. 

 

[robcat2075]

Unless it's not being interpreted correctly by the video editing program, there should be no difference in synch between a 30fps image sequence and a 30fps video.

 

However, back in the 90s AVI was notorious for poor audio synch. I don't know if that was ever fixed.

[robcat2075]

To test, I made a 3 minute animation of a pendulum doing 1 beat per second.

If I render to AVI, the first 30 seconds are messed up but the rest looks normal.

 

If I render to Quicktime, it all looks correct. (I chose "Animation" as the Codec)

If you still have Quicktime installed, you can render to QuickTime from 32-bit A:M. I think most video editing apps will still recognize QuickTime files.

[robcat2075]

Try playing this...

pendulumB.zip

[robcat2075]

If I render just one minute of pendulum, the resulting AVI plays fine. There may be some general problem with large AVIs.

[Madfox]

Thanks for the file, robcat!

I made some soundvideo's before,like the tud "do you want to know a secret" , and others and had no problem with them.

Maybe because of the size larger then vga, I don't know but at least I' m not the only one that receive that 48 sec scrambled noise. 

I made a picture file of jpg and added the sound later. It seems the best way to do.

My last render on 1240x1024 on mpg1 code returned a scrambling screen again. Oh Yeh and QuickTime isn' t available in amv19.

[robcat2075]

10 hours ago, Madfox said:

Oh Yeh and QuickTime isn' t available in amv19.

I rendered that file in v19!

You have to install 32-bit v19.

Copy the master0.lic file from your 64-bit A:M to your 32-bit A:M to activate it.

[Madfox]

Here again on solving some nitwits.

I read the song "On The Run" from the Pink Floyd album carries the BMP 166. 
So that is 166 beats in a minute.
Me donkey starts counting on 30 f/s divides by 60 seconds end upon 1800 : 60 = 10.843.

Uh.., how do I fit one second in 10.843 frame?

So to occupie the problem I started with a minute animation and added 166 beats on 11 frames.
That works on the behold of three frames.
I took the whole minute (and three) beats and shortened them back to one minute.
Then I reordered the beats (on sight) back to keyframes.

Of course 24 frames per minute give another outcome.
Then it becomes 8.67 frames per second. Then it rounds up to 9 frames per second.

Anyway, it always ends upon a non integer.This interferes the feeling of rythm.

Now I finally have a reproduction of a minute animation on 166 Beat Measures per Minute.
It slightly swifts, but I think it is the best way to archive the goal.

Maybe others have another solution?

🤔

 

[Madfox]

[Rodney]

Posting MP4 version as that should appear here in the forum: