Blender 3.0 for Production - 2D & 3D Tracking Workflow - 11 Semi-automatic Tracking Workflow

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In this tutorial series, we will talk about Blender as a solution for 3D Camera and Object Tracking. Step by Step you will learn how to use Blender for preparing your footage in the Video Sequence Editor (VSE) and getting used to the Movie Clip Editor. Then we will cover the important fundamentals of 2D-Tracking in Blender and also some use-cases for directly using these data. Then we build upon these 2D-Tracks and start solving a 3D-Camera and talk about good and bad tracks, nodal shots, tricks like offset-tracking, joining of tracks, and analyzing solve problems. In the final tutorials, we will finish with Object-tracking for props replacement. After this tutorial series, you have a solid understanding of Blender's Camera and Object Tracking and how to use the solved data inside of Blender or in other applications like Maya, Cinema, or Houdini.
If you have questions or topics, which should be added, please let me know.
If you want to support me for publishing more free tutorials you could join my Patreons:
👉 / pixeltrain3d
or give me a fast Coffee time Tip:
👉 PayPal: paypal.me/pixeltrain
Want to start learning Blender Fundamentals with Helge?
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These topics are covered in this tutorial:
When to use semi-automatic Camera-Tracking
Analyzing the shot
Finding problems before tracking
Detect features function
Predefine the tracker settings
Last operation menu
Defining tracker areas with annotations
Workflow with zero-weight trackers
Using annotations as masks
Margin, Threshold & Distance
Remove problematic trackers
Tracking
Hiding disabled trackers
Adding more automatic trackers
Analyzing the trackers amount
Killing short living trackers
Clean-up panel
Filter tracks by Frames
Working with the tracking graph
Understanding speed curves
Solving the shot
Looking for good keyframes
Search for high re-projection errors
Clean-up by error
Search for parallax
Focal length
Lens Distortion
Setting up the scene orientation
Re-adjust the geometry
Making a playblast
If you want to use the same footage, here is my Gumroad link:
pixeltrain3d.gumroad.com/l/GEdjT
Be aware, that these files are included in my Patreon ;-)
/ pixeltrain3d
This tutorial series „Blender for Production“ focuses on Blender as a full Production Suite for (Indie) 3D- & VFX Productions. In these tutorials, I will explain how to work with the different Modules of Blender and how they are connected. I will give you an introduction to the specific functionalities, but also the production context and workflows, which can help you to use Blender in your productions.
As a Senior 3D & VFX Trainer, Helge Maus teaches 3D- & VFX Applications for 20 years. His focus lies on VFX, but he also works with many studios and agencies from different visualization areas. He focuses on Houdini FX, Blender, and NUKE for his daily work and training.
If you have questions or topics, which should be added, please let me know.
If you want to support me for publishing more free tutorials you could join my Patreons:
/ pixeltrain3d
or give me a fast Coffee time Tip on
PayPal: paypal.me/pixeltrain
Find more information on www.pixeltrain.net
RU-vid: / pixeltrain3dvfxtrainings
Twitter: / pixeltrain
Mastodon: mastodon.art/web/@pixeltrain3d
Instagram: / pixeltrain3d
LinkedIn: / pixeltrain
Artstation: www.artstation.com/pixeltrain

Опубликовано:

15 фев 2022

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Комментарии : 30

@KAZAIK3D 2 года назад

The best teacher ever

@mirality2464 2 года назад

Danke Helge!

@johntnguyen1976 2 года назад

This series is like super high end education, man. So good!

@pixeltrain3d 2 года назад

Thanks a lot :-)

@achomire Год назад

A must watching tutorial. I have been watching the whole Tracking Workflow series from You and not only understood the logic but managed to successfully track a drone footage, which caused me so much headache. I am not Blender user, but adopting it more and more for its versatility . After watching so many 5-10 min tutorials on the same topic, found Yours to give so much valuable information! Thank You!

@pixeltrain3d Год назад

Thanks, great that you find it useful

@Tudemir3 11 месяцев назад

Thank You very much. I appreciate your teaching skills.

@FaizanShakeelKhan 2 года назад

Thanks a lot 👏👏👏👏👏

@Blenderlands Год назад

I was looking for gold, but I found a diamond.

@nm-conceptfilms 2 года назад

Richtig richtig gut! Hab vielen Dank!!

@pixeltrain3d 2 года назад

Danke, freut mich, dass es Dir gefällt!

@FredAubert 2 года назад

Yet another Great tutorial! Thank you Helge, every time you share so much information, it is all very useful. I just registered to your Gumroad, looking forward to reviewing the whole package. Cheers, Fred

@lennylin5651 2 года назад

I have watched quite a lot tutorials talking motion trackings, most of them are showing quick fix solution and not explaining why, but yours are very informative and instructive, thanks again for great work! I have one question though, other tutorial taught adjusting camera position to align the background instead of trying to reduce the solve error, what might be the pitfall of doing this way?

@pixeltrain3d 2 года назад

Hm, I hope I understand your question correct: First we need a solid solve, then the right focal length and then the right lens distortion. After that, we reconstruct the scenealignment with floor (origin), axis and scale. then the camera should be in the correct position in relation to the plate. A solver can't know anything about size, floors or things like that. So if you instead re-position the camera, you indirect do the same thing like building the scene reconstruction the ways I explained. Or do I missunderstand the question?

@lennylin5651 2 года назад

@@pixeltrain3d Thanks for the reply! I think you have answered my questions. Actually, to re-position the camera only happens when the footage is lack of parallax in my case.

@seanwilson9630 2 года назад

This is absolutely amazing work and information! Could you make a tutorial on dealing with lense blurs in footages where the image goes out of focus for a few frames? Thanks and keep the great teachings.

@pixeltrain3d 2 года назад

Thanks, Sean. If the plate gets blurry for somemframes, it's often enough to increase the size of the pattern area und if needed, correct the positions in the blurred frames by hand. We have talked about that in the 2D-Tracking part. Then, if the blur stops, you can then track the marker normaly on. Sometimes you get away by setting the mechanism so, that the pattern is keyed in every frame, but this produces to much drifting in most cases. Take a look into the 2D-Tracking part and if you find more problems, please let me know :-)

@ppsystems4317 2 года назад

Hi Helge, thanks again for this wel explained tutorial. You are really amazing with your detailled explanation. Please may be I missed some tutorials but where do you speak about nodal shots ? Sorry but I don't find this tutorial.... Thanks again

@pixeltrain3d 2 года назад

Hi, the tutorial will come out today :-)

@ppsystems4317 2 года назад

@@pixeltrain3d Thanks a lot.... a small other question : do a tracker has to survive during the whole plate ? because with automatic (or semi) tracking it's not the case ...

@pixeltrain3d 2 года назад

No, not at all. The longer they live, the better. But in no plate all trackers live forever! The only rule is, that for the keyframes you need a minimun of 8 trackers (same), to get the first parallax. But then the others are helping. You have to make sure that in every frame later you have enought parallax through your trackers, but if some die you can have new ones.

@KAZAIK3D 2 года назад

I hope we are about to reach scene reconstruction using trackers

@pixeltrain3d 2 года назад

Do you mean point clouds and meshing them or blocking out?

@Tudemir3 11 месяцев назад

I made a solve error camera of 0,12 pixels on my scene. My footage contained a floor of squared tiles. In some tiles I put 4 trackers, one for each corners of the tile. The trackers were perfect. I could see how the traíls were moving perfectly following alongside the footage. Now comes my problem: when I Solve the camera and I can see the ground plane and the cube with the rest of the tracks in the upper right window I get nuts when I see that the markers that matched perfectly with footage in the below window surprisingly don't match with this window with the plane and the cube. It seems as if the trackers (crosses) were "floating" some centimeters from where they'd have to be. What did I do wrong?

@pixeltrain3d 11 месяцев назад

A camera solve error doesn't mean that you have usefull data for the solver! Have you seen the Introduction lesson to 3D-Camera-Tracking? In that I explain, that you also need a good coverage of different depth layers of your scene and have trackers in different parallax objects. 4 Trackers on one tile gives the solver only a 2D solution with no knowledge of depth. I think, that's the reason for your problem. Start the 3D-Tracking lessons here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-nLlqgA948Ow.html The solve error only tell you the re-projection of 3D Points to the 2D positions.

@Tudemir3 11 месяцев назад

@@pixeltrain3d Thank You for your time. The fact is that I harvested the scene with many trackers (not only 8) I covered all distances and all the frame. Many points. But in addition put those concrete four dots on a certain tile in ground to test and to set the 3D cursor. If I could send you a minivideo where I see that I'd show you better, but YT doesn't allow (a pity). When playing the shot (before solving camera) and even after doing It! the red-blue trails follow PERFECTLY those four corners. The rest of tracks on screen too, by the way. But when solving camera and I activate those two bottom keys (below in solve panel) that make the upper right window show both movie+cube and ground then I behold that those before perfectly aligned trackers in the main and low tracking Window now are still there but now they don't snap or adjust (they look like if they were floating or sliding some centimeters from where they'd have to be)