On 11/04/2021 8:20 am, Dave Blandston wrote:
> Greetings Friends,
> 
> More than ten years ago I made a scene that I didn't think turned out quite
> right so I set it aside until recently. I re-worked some of the textures and
> made some improvements. One of the improvements was to change the flag from a
> flat box with fake shadows to simulate ripples (not very convincing) to a mesh2
> object. Since the mesh2 is easily animatable with a simple sine function that
> led to this animation:
> 
> https://www.youtube.com/watch?v=gYJac3vCHu8
> 
> The message of the image is anti-war and it's based on the Metallica song
> Disposable Heroes, so I've decided to add the music to the animation and try
> animating the inside (currently green) portion of the Metallica logo. My goal is
> to animate the logo in such a manner that the animation is synchronized with the
> music, similar to the visualizations in Windows Media Player and other music
> players. It will be a big job to do by hand. One thing that would help would be
> a software application that would analyze the music and generate a list of exact
> times when a change occurs in the music and save the list as a text file that
> POV-Ray could read, but creating a program that does that is beyond my ability
> so I will try doing it by hand. There are endless possibilities so this will be
> a fun project! One thing that I have working at this point is using video frames
> as the pigment for one or more letters of the logo at a time, which can be
> combined with procedural textures.
> 
> Kind regards,
> Dave Blandston
> 

I use Audacity to find the start time of each phrase in the song, I then 
put these times in a spreadsheet to get the clock values and frame 
numbers for POV-Ray .
See screen shots.

Best wishes,
m@

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