POV-Ray : Newsgroups : povray.animations : ttlo : Re: ttlo Server Time
3 Oct 2022 16:36:00 EDT (-0400)
  Re: ttlo  
From: dick balaska
Date: 3 Apr 2018 10:52:09
Message: <5ac39519$1@news.povray.org>
On 04/03/2018 02:59 AM, Thomas de Groot wrote:
> On 2-4-2018 3:21, dick balaska wrote:
>> Elvis has left the building.
>> My next scene, Through the Liftoff of ...
>> http://www.buckosoft.com/tteoac/video/testRenders/ttlo-720p.mp4
> 195km??? And still visible from the ground???

Very small km?

On the other side of that, I think it is 10km and hasn't even cleared 
the strongback.

I was worried you spacegeeks would freak out about that. :)

In my defense, in some reality, the SpaceLoco is being carried by the 
kid and is really no higher than an outstretched arm, 4 feet up. :)

The speedometer/tachometer sweep is what I used to see going from 0-100 
mph (in 6 seconds) on my CB650sc. Other than that I didn't put a lot of 
control into the numbers. I wasn't sure where they'd end up.  I will 
figure out what I want those numbers to be and backport the increments 
to fit. -- I just watched yesterday's SpaceX launch; I need to really 
dial back the altitude and increase the speed. :)

Major math disaster strikes!

So I have this 16:43 long song/movie.  I break out a scene of a couple 
of verses, between 1 and 2 minutes, and work on that.
The problem is, each scene can not end exactly on a frame, because I 
support 23.976 and 30 fps, and because I was a little sloppy. Each scene 
is +-0.5 frames off, which added up over the scenes. Even worse, in the 
movie, I have different start times for this scene depending on frame 
rate. :(  I am off by 0.126 seconds from where I think I am, which is 
horrible when trying to time it to music.

This is a cumulative problem, and I never really noticed it because most 
music cues happen on the peak of a sin curve, so if it is off by a 
little it's not really noticeable.  But, this scene, the countdown, 
monitor2 on and monitor3 on all need to nail the timing.  And in this 
scene as presented here, they do.  But, when I pasted it into the full 
movie, it is off by 0.126 seconds and they look horrible.  Even worse, 
this is 30 fps, and the 23.976 fps edition has a different amount of 
off-ness. [1]
So I have to do this scene in two different lengths. In the ini I pass
and adjust the duration and start time of the scene accordingly. :) :(
And, the Thrusts and camera2/3 images are handled by Java [2] and *it* 
needs to know the different scene durations and start times.  Just ugh.

At least at the end of this scene, my two timelines are resynced back up.

Math, and time, are most unforgiving mistresses.

> I love this scene! I thought the locomotive would travel along the 
> tracks but this is better.


> Well done. Cannot wait to discover the 
> destination.

I'm not real sure.  Do I go into space? Do I fly around the room? both?
I cut the next scene at 2:13, which is my longest scene, and I'm not 
sure what to do with it. :)

Rendered 328976 of 330000 (99%)

(lines 59-60)

[2] http://www.buckosoft.com/javadoc/TteoacService/

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