I did not find information on the Internet how to make animated video and animated images in the 3D space of the AR project in Vuforiа Studio.
At the PTC Community forum users write that video and GIF-animation in 3D-space are not supported, however, there are projects in the Internet where video in 3D and animated images are clearly visible.
How did they do it?
I believe that it can be done with these open source Extensions :
Here an article who explains how to install them:
1 .About the first video, I think that it might be possible to embedded a video in a svg file and use the 3D svg Extension.
Just keep in mind that the refresh will be low. So, it might be laggy to display a video.
2. About the second and third videos. It can be done by 3D svg also.
Please look at the example Project attached to this post.
I hope that it's can help.
Regarding first video (video with Polaris, ) https://youtu.be/c3Nlb1Rz9wY?t=34 - please, see this video about 44-45 sec (0:45) - here you could see Vuforia watermark in the left down corner. Vuforia Engine (former Vuforia SDK) watermark It means PTC made this AR application in Vuforia Engine (+ Unity, may be).
To install video clip "Player" into Unity scene supported by Vuforia AR camera - it is the trivial task.
You create Unity scene, add here vuforia-unity unitypackage, add vuforia engine license and you can see new class of Unity Game Objects - Vuforia objects. First of all - AR-camera, then - image as a target container/ And after that you can add in Hierarchy under Image native Unity object - Quad. After that you can put into Quad new quad-component- Player for mp4 (or another video format). You can see similar example in youtube as https://www.youtube.com/watch?v=MtiUx_szKbI (since 12:27 ...)
Regarding others - I don't know how do it in Vuforia Studio without extensions.
The first one is not a Vuforia Studio Experience but a stand-alone application made with Vuforia Engine (and Unity i think). Vuforia Engine is an SDK so you can use it with other software but require knowledge of programming languages and other software. If you search online there are a lot of tutorial about using Unity combined with Vuforia Engine.
The second one i think has been realized with a little trick.
Probably you can achieve the same result using a custom shader but it's more complex.
Regarding the third one, as far as i know the only way to make something like that is with a custom shader but my knowledge about shaders is very limited therefore i can't be more helpful.
To have better performance in real time with a video rendered over a 3D plane, the best is to use Unity3D and Vuforia Engine SDK.
About video rendered as a texture in Unity, please this help page :
To make a Plane, it is simple, an Object already exists in Unity :