13
votes
Accepted
How to convert a 3D movie to 2D using ffmpeg
While you might be able to achieve this by manually using ffmpeg's crop filter, the stereo3d filter is designed specifically for this purpose. You didn't specify the exact 3d format you have. There ...
- 246
5
votes
How they did it? (3D-like screenshots with animation)
This looks like 2.5D to me, probably in After Effects. You create high res art, perhaps by capturing web pages from a 4K display, then animate each screen. Its only a small amount of mousing. Then use ...
- 411
3
votes
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How to align a shape to stick to another in AE?
The tool you need is Maths (or Math, if you like), specifically that most beautiful of mathematickal arts: trigonometry.
First set the width of the base of your triangle to be the same as the sides ...
- 13.7k
3
votes
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convert horizontal side by side to vertically stacked 3D video
Just integrate all filtering into one command:
ffmpeg -i input.mp4 \
-filter_complex "[0:v]crop=in_w/2:in_h:0:0 [top]; \
[0:v]crop=in_w/2:in_h:in_w/2:0[bottom]; \
[top][bottom]vstack[outv]" \
-map "[...
- 32.6k
3
votes
Accepted
How to realistically add planet in the sky using 3d camera tracker and avoid overlapping with objects in the foreground?
If the blades are rotating, and the camera is moving, you need to create a good foreground layer with anything the planet is supposed to be obscured by.
So from the image it looks like it will be ...
- 7,585
2
votes
Accepted
Motion capture and 3D model formats
You are a little confused in the MoCap process.
Most mocap is captured live on either a soundstage or direct to your computer with a webcam/video camera with specialized software. This software ...
- 36
2
votes
ffmpeg statement for Anaglyph of Red-Cyan Color
stereo3d is a video filter so it has to be specified via a filterchain or complex. Since you have two inputs, and stereo3d only converts a single input from one form of 3D arrangement to another, you'...
- 32.6k
2
votes
How to convert a 3D movie to 2D using ffmpeg
I found a reference on this forum.
http://www.ffmpeg-archive.org/How-to-re-encode-3d-video-to-2d-video-td4676271.html
ffmpeg -i './a3dmovie.mp4' -vf "crop=w=iw/2:h=ih:x=0:y=0,scale=w=2*iw:h=ih,...
- 243
2
votes
Accepted
3D object from CINEMA4D has glowing edge in After Effect
Have a look at how AE is interpreting the footage (right-click it in the project and look for Interpret Footage>Main). Specifically look at how it is interpreting the alpha channel, it could be ...
- 13.7k
2
votes
Accepted
How to create a pseudo 3D/virtual POV effect
Th general technique is called camera mapping, projection mapping, or videogrammetry. It works by taking a photo or video from an angle and projecting the image onto geometry.
As a simple example, ...
- 2,156
2
votes
How to convert a 3D movie to 2D using ffmpeg
As an adaption of kevmitch's answer, I went with
ffmpeg -i "foo.mkv" -vf stereo3d=sbs2l:ml -c:a copy "bar.mp4"
Notable difference: It's using sbs2l (instead of sbsl2) and just ...
- 121
2
votes
Accepted
How can I convert a 3D SBS video to individual left side video and right side video?
You can use FFmpeg, a free commandline tool to do this.
ffmpeg -i sbs.mkv -filter_complex "split[l][r];[l]stereo3d=sbsl:ml[left];[r]stereo3d=sbsl:mr[right]" -map [left] -map 0:a -c:a copy left.mkv -...
- 32.6k
2
votes
Accepted
How to use chroma key to replace design of complex object?
What you are thinking about is a very great way to save production costs and is used in many cases on many sets. Here is what your pipeline would look like:
Shoot the footage with green tables
Track ...
- 2,675
2
votes
Accepted
Create a spherical hologram
This is not something you should ever do in After-Effects. Primarily, After-Effects is a motion-graphics program, so it works in 2D 99% of the time. Something like this scene from ghost in the shell ...
- 2,675
2
votes
Add 3D visual effects to videos
Yeah that was actually the best opening ceremony ever...
Doing something like this yourself is a hefty task, but first, here's what you would need:
A software for tracking
A software for modeling / ...
- 2,675
2
votes
How to realistically add planet in the sky using 3d camera tracker and avoid overlapping with objects in the foreground?
You need to add a copy of your video (so you have two layers, only the bottom one needs the planet on it). Rotoscope the top layer - when you create your mask the only thing you will see is the bit of ...
- 21
2
votes
Accepted
Which software/s to create a video like this - 3d explainer video
This could definitely be made using Blender. The text and lines could have been added using After Effects afterwards (Blender can do this too), but the 3D modelling would all be rendered in a 3D tool ...
- 7,585
1
vote
Why my objects are showing in this color?
The image from the tutorial has a white material applied to it. You can see it in the object manager, it’s the white sphere. By default, C4D uses a grey material. To do the same, create a new ...
- 4,444
1
vote
Accepted
Would a large grass field make a good green screen?
It's doable, so long as you have some time, diddling around in After Effects with the Keylight chromakey and the camera tracker... Here's an example I made a while back at 4m25,5m17,
6m04, 8m33 (and ...
- 7,585
1
vote
How do I adjust things in 3d in after effects
I pressed CTRL + SHIFT + H and my controls were back
- 31
1
vote
Accepted
How is this basic 3D animation template created?
You answered your own question in your tags: use Animation in a 3D package like Blender.
But TBH your question is too broad to be answerable. To tell you how to make those 3D characters yourself we'...
- 13.7k
1
vote
Can you put in and animate 3D models in After Effects exactly like in this video?
Combining camera footage with generated objects is called compositing.
The candy scene could be created in three steps:
The girl was filmed ahead of a green screen. Green parts of the footage made ...
- 189
1
vote
Can you create a VR video that makes use of positional tracking?
For this you are going to have to build a 3d-world. This is because if you want to move position you are going to have to be moving in 3d. The easiest way to build up the 3d scene is with ...
- 187
1
vote
Can you create a VR video that makes use of positional tracking?
You can use photogrammetry if you had enough different viewpoints to build a 3d representation of the scene and apply all necessary texturing and lighting. The video would then play as an animated 3d ...
- 19.3k
1
vote
Accepted
How to independently produce 3D Movies when 3D-TV's are discontinued?
Some are using VR headsets, some work with anaglyph glasses. With some plug-ins (such as the Dashwood 360 VR Toolbox, as one example), you can use popular headsets like the Oculus Rift. But many will ...
- 2,156
1
vote
How can I convert a 3D SBS video to individual left side video and right side video?
I don't have enough reputation to make a comment on the selected answer, but if you're using a version of ffmpeg with GPU support, you can use the GPU to render the output way faster. This is what I ...
- 11
1
vote
How to align a shape to stick to another in AE?
You could try moving shapes around in 3D in AE, but I think the free version of Cinema 4D included with AE would be a much easier tool for the job. Look up cinema 4DLite and after effects integration.
- 7,585
1
vote
Accepted
Cropping VR video afterwards
Using the mask image below, you can use ffmpeg to crop and output a MP4 with the visual content bounded in the same elliptical shape as the mask
ffmpeg -i input.mp4 -loop 1 -i 360mask.png \
-...
- 32.6k
1
vote
Accepted
Whats the name of this Effect?
I don't think there is a name to the effect. If I were to describe it, it would just be "the effect of a shell of an object cracking up and falling / peeling away in fractured pieces".
I am sure you ...
- 96
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