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 Post subject: Ghost Town Tour
PostPosted: Tue Apr 28, 2020 1:03 am  (#1) 
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Tutorial
I used an actual ghost town in Tasmania to make the background using google street view images. I put them together to make the background in a very long Gimp canvas (2560x360px). Left and Right ends must match.

I used ofn-scroll-layer script to make 2560 layers. Settings were Horizontal Step = 2, Tiles = 1.
Next exported all layers to a folder to reduce the frame number.
Then from a terminal:
rm -f *[13579].png

rm -f *[24680].png

Renumber layers after each of the above operations with the file manager.
This reduces frames down to 160 without dropping 2 layers in series.

The reason for all of this is the original image is over 30 gigabytes in size. This will hit the 'Gimp ram wall'. Unless you have a very powerful computer you will be unable to process an image of this size. So a lot of the image reduction takes place in the file manager.

Then 'open as layers' the 160 frames back into Gimp. Then I scaled them up to 1280x720 for video use. Making a gif just means scaling them down again to about 500px wide. I use an online GIF maker.
The 'rat rod' is a cut-out on a 1280x720 transparent background. To speed blur the wheels I used Gimp Circular Motion Blur and adjusted the angle till it looked right. Put this at the bottom of the layer stack and Filters>Animation>Overlay background.

Commands are for Linux modify for other OS's.


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 Post subject: Re: Ghost Town Tour
PostPosted: Tue Apr 28, 2020 5:08 am  (#2) 
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That looks great Tas. Amazing tenacity to accomplish such a feat using Gimp. The Google Street View idea is brilliant as well. Awesome job :bigthup


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 Post subject: Re: Ghost Town Tour
PostPosted: Tue Apr 28, 2020 6:46 am  (#3) 
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Thumb goes up and then the rest of the hand goes up in the back of the room. Have you used any gif animation in the videos you've previously posted here and on YouTube?


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 Post subject: Re: Ghost Town Tour
PostPosted: Tue Apr 28, 2020 12:42 pm  (#4) 
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Impressive idea to use google street view Tas_mania it works very well :kpix


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 Post subject: Re: Ghost Town Tour
PostPosted: Tue Apr 28, 2020 2:54 pm  (#5) 
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Very nice gif Tas, though if it had small bumpy ride effect, like having suspension it would be superb.
Great idea to use street view.


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 Post subject: Re: Ghost Town Tour
PostPosted: Tue Apr 28, 2020 5:36 pm  (#6) 
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Hey thanks for the encouragement racer-x. I'm glad you liked it neurolurker and I will answer the question.

teapot this was your idea of course, but I wanted to see how long the background could be.

Nidhogg, I thought of bumps in the road. This vehicle shows front and rear suspension control arms so not a suitable candidate. One of teapots VW beatles would be a place to start. Or maybe a Porsche?

The GIF format is accepted here as an upload (less than 5.22Mb) but it's not needed for videos. If you want a video loop just make sure the end and beginning match and play over again. I've been doing gifs for a long time but the webm format is what I use for loops.

I'm making a 'road movie' video at the moment and this gif is just a sample.

I found this setting gives some slight 'bumpiness'. But it moves the image when the background moves - not what I want.
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 Post subject: Re: Ghost Town Tour
PostPosted: Thu Apr 30, 2020 6:25 am  (#7) 
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Thanx for the suggestion Nidhogg - I bounced the ratrod a bit.
I used 'python-fu-copy-and-shift-layers' to Shift Y one place and then up one place again, then down one place etc.
I built a series of about 12 layers then linked them and packed the linked layers. I then duplicated the packed layers to match the number of background layers.

Lastly I used python-fu-interleave-multiple layers to merge it with the background animation.
It doesn't really move, just bounces in one place :cool


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 Post subject: Re: Ghost Town Tour
PostPosted: Thu Apr 30, 2020 6:38 am  (#8) 
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Looks great, Tas. :)

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 Post subject: Re: Ghost Town Tour
PostPosted: Thu Apr 30, 2020 7:53 am  (#9) 
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Great job Tas, looks also smoother than the first.


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 Post subject: Re: Ghost Town Tour
PostPosted: Thu Apr 30, 2020 8:31 am  (#10) 
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Looks great Tas, well done. FYI, you do realize you could've done that in Aviutl in 5 min or less though. I'll give you an A+ for doing it all in Gimp.

Example using teapot's background.

Attachment:
Mustang.gif
Mustang.gif [ 528.81 KiB | Viewed 8236 times ]


Last edited by racer-x on Fri May 01, 2020 9:05 am, edited 2 times in total.

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 Post subject: Re: Ghost Town Tour
PostPosted: Thu Apr 30, 2020 8:40 am  (#11) 
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wtg Tas :bigthup

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 Post subject: Re: Ghost Town Tour
PostPosted: Thu Apr 30, 2020 5:51 pm  (#12) 
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This one is smoother Nidhogg because it's faster. I was too focused on the background in the first one and slowed it down. GIFs have to fly past to work properly.

racer-x's animations are always good. This type of animation would work for trains and drag cars as well. I'm finding the newer Gimp appimages are user friendly with features than could only have been put there by artists.

Gimp python scripts are almost 'scientific' when you get into them. Very precise and predictable IMHO.

Hi Sallyann and Lyle keep on Gimping.


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 Post subject: Re: Ghost Town Tour
PostPosted: Thu Apr 30, 2020 7:19 pm  (#13) 
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Looking good, well done Tas_mania :clap

I like your version too racer-x, nice work :coolthup


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 Post subject: Re: Ghost Town Tour
PostPosted: Sat May 09, 2020 5:50 am  (#14) 
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Another GIF spinoff from a video clip. I call it 'Born To Be Mild'. Playing with some techniques.

Background loop made with Kdenlive using alpha gradient for the transition. The rest done in Gimp merging 3 animations with 'python-fu-ofn-interleave-multiple-layers'.

The weird sky animations made in Mandelbulber with a G'MIC wave distortion applied.


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 Post subject: Re: Ghost Town Tour
PostPosted: Sat May 09, 2020 10:05 am  (#15) 
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Awesome job Tas! I almost flipped when I saw it...
https://imgur.com/uVKYKgD


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 Post subject: Re: Ghost Town Tour
PostPosted: Sat May 09, 2020 6:20 pm  (#16) 
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Awesome job Tas! I almost flipped when I saw it...
https://imgur.com/uVKYKgD

He remembered to put decals on the bottom of his car but not get a wheelie bar LoL.

I've embedded a Kdenlive appimage as well as the Gimp appimage. Kdenlive is now up to 20.04. For transitions (loops) I'm experimenting with alpha gradient. I think it's best to use a long overlap between the 2 clips.


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 Post subject: Re: Ghost Town Tour
PostPosted: Sun May 10, 2020 8:20 am  (#17) 
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I mostly use ShotCut these days and did the same with embedding the appimage. Kdenlive works well too. As for the car flipping, it was during a wheelie competition...

Attachment:
Buick-wheely.gif
Buick-wheely.gif [ 2.27 MiB | Viewed 6788 times ]


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 Post subject: Re: Ghost Town Tour
PostPosted: Mon May 11, 2020 7:30 pm  (#18) 
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The Buick wheelie works well as a gif. Good color and the action is short and sweet. Also no need for a transition.
I don't think we have wheelie competitions in Australia.
But what is this sport??
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 Post subject: Re: Ghost Town Tour
PostPosted: Tue May 12, 2020 1:58 am  (#19) 
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Today I went from wheelie contests to wheelie bins. I came across a UK inventor whose idea may have solved homeless accommodation....or has it?

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