Blog – Page 16 – Cocoa López Studio Blog

Mono + 5.1 Multitrack ProRes Export from Premiere

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cgmodeler

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January 29, 2021

Mono + 5.1 Multitrack ProRes Export from Premiere

So I was having issues for a short film release, it turns out that ProRes supports Multitrack audio with Mono/Stereo/5.1 tracks however I didn’t know how this should be handled.

After going through it again and thanks to the help from the guys over at the “Editores y Postproductores México” FB Group https://www.facebook.com/groups/editoresmexico/permalink/3844096602305717/?comment_id=3844284348953609

I managed to get it working.

Here’s the basic workflow:

I needed 4 mono tracks and 1- 5.1 track, the premiere export accounts for all tracks as 1 but when selecting type 5.1 for a multitrack it counts as 6 tracks so at the end you want to do a Multichannel 11 Adaptative Tracks Sequence.

Something like this:
Track 1 – Mono (Stereo Mix L)
Track 2 – Mono (Stereo Mix R)
Track 3 – Mono (M&E Mix L)
Track 4 – Mono (M&E Mix R)
Track 5 – 5.1 Multitrack (5.1 Theatrical)

Go to the new sequence dialog and under the tab “Audio Tracks” select “Multichannel” and number of tracks “11” (The extra track helps for premiere exporter to recognize the last track as 5.1)

Make sure you have 4 Adaptive tracks numbered 1, 2, 3, 4 and a single 5.1 track on the 5th track.

You should see something like this:

Now you have to make sure to click each “Output Assignment” and route each channel to its intended output, for example:

Track’s “Audio 1” Channel 1 goes to Ch.1 on the Master Track

Track “Audio 2” Channel 1 goes to Ch.2 on the Master Track

Track “Audio 3” Channel 1 goes to Ch.3 on the Master Track

Track “Audio 4” Channel 1 goes to Ch.4 on the Master Track

Track “Audio 5” “Channels L R C Lfe Ls Rs” go to Ch 5 to Ch 10 in that order.

You might notice that Channel 1 on every track is routed to Ch 1, 2, 3, 4 respectively, thats because as your input is a MONO track you have to tell Premiere that It’s channel 1 is the one to be exported.

Once you have your timeline with 4 mono tracks and 1 Surround track go to MOVIE/ EXPORT

Select ProRes HQ

Under Audio settings, make sure to map each mono output to a single channel and the last 5th track make it 5.1 with L R C Lfe Ls Rs mapping.

Once you’ve rendered your file, you sould have 4 mono audio tracks and 1 Surround 5.1 track on your .mov

Rigging Tips for Game Dev for Maya

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cgmodeler

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November 14, 2020

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Also applicable on normal limited animation for Maya, rigging tips for games https://medium.com/@sol.g.brennan/rigging-tips-methods-for-extra-character-deformation-in-game-dev-e4c0e89e7b00

View at Medium.com

Machine Learning Projects Index

Tips y Tutoriales

cgmodeler

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October 27, 2020

0

Curated by Emil Wallner, this machine learning projects index is amazing and a resource to consult frequently for your ML needs.

https://mlart.co/

Create tileable textures online

Tips y Tutoriales

cgmodeler

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October 20, 2020

0

Use this tool to turn an existing, non-tileable stochastic texture into a tileable texture, by manipulating its edges using histogram-preserving blending. It works on all random-phase inputs, as well as on many non-random-phase inputs which are stochastic and non-periodic, typically natural textures such as moss, granite, sand, bark, etc.

https://unity-grenoble.github.io/website/demo/2020/10/16/demo-histogram-preserving-blend-make-tileable.html

Need tileable textures? We've added two web tools using histogram-preserving blending: https://t.co/bsQTcj2EvR
This one makes an image's borders tileable, shown here on a picture of a cliff face. Works for most natural non-periodic textures such as sand, rock, etc. pic.twitter.com/Gp9ZIzHMbt
— Thomas Deliot (@thomasdeliot) October 20, 2020

How to bypass News sites paywall /Cómo evitar los overlays de pago en los portales de noticias

Tips y Tutoriales

cgmodeler

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September 30, 2020

0

How to bypass News sites paywall /Cómo evitar los overlays de pago en los portales de noticias

Download an install the extension from this github repository, works with either chrome or firefox

Descarga e instala ésta extensión desde github, funciona con chrome y firefox
https://github.com/iamadamdev/bypass-paywalls-chrome

Meshlab Clean ply from Capture iOS App

Tips y Tutoriales

cgmodeler

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August 6, 2020

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We will apply the following filters and tools to the PLY file Scan from the “Capture” app in the following order.

We can search all of the filters at the MESHLAB search box, apply them with the default values unless specified.

First we’re going to clean the point cloud

Remove Duplicated Faces
Remove Duplicated Vertex
Remove Zero Area Faces
Point Cloud Simplification (You can skip this one if you need the texture color from the vertexes as it will ad unwanted speckles)
Number of samples try 1/2 of the total Vertex count and increase if needed (Ex if Count is 800,000 then samples can be 400,000)
Best Sample Heuristic Checked
Select the “Simplified Cloud” new mesh
Compute normals for point sets
Neighbour num between 10 – 100
Smooth Iteration between 0 – 10
Show Normal
Make sure Normals are Computed properly

Now to Create the solid Mesh

Screened Poisson Surface Reconstruction
Select Faces with edges longer than
Then delete those faces
Remove isolated pieces (wrt Face Num.).
Remove unreferenced vertices Checked
Select non Manifold Vertices
Delete them
Laplacian Smooth (In case is needed)

Now for Texturing

Per Vertex Texture Function
Convert PerVertex UV into PerWedge UV
Parametrization: trivial Per-triangle
Quads -per -line : 0
Texture Dimension (px) : 4096 or (1024, 2048).
Inter-triangle border (px) : 0
Method : Basic (with Space-optimizing somethimes Meshlab crashes.)
Save Project As... Save the project in “.mlp”
Export Mesh As... OBJ
TexCoord Checked
Transfer: Vertex Color to Texture
Texture file : Same name as the mesh
Texture width (px) : 4096 (make sure this is same as Texture Dimension in the above steps)
Texture height (px) : 4096
Check Assign texture and Fill texture

How to Create A Joint-Based Skirt Rig With Auto Collision In Maya

cgmodeler

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July 11, 2020

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How to Create A Joint-Based Skirt Rig With Auto Collision In Maya

There are two methods one with scenes included which is the following:

SKIRT COLLIDER

https://www.perryleijten.com/en/works/skirtColliderRD
This one has sample scenes

His website seems to be offline so I took the liberty of recapturing everything from wayback machine and reposting it here
(Perry please write me if you want the content to be taken down when your site is back online):

(From Perry’s website)
I recently saw this article being posted about a simple skirt rig based on math by Liling Liu.

To be honest I couldn’t really follow the tutorial but the images where clear enough to make a start.

The first test was created with a similar setup as the one in the tutorial above, but instead of using math nodes its just using a ik-handle that directly drives the rotation of the affected joints. On this joint the limitTransformations are set in such a way that it only rotates in Z and cannot rotate less then 0 degrees. Thus making a fake collision based on rotations:

Expanding on this, what if we want to have more segments to the skirt or even a way to use collision when we have the knee in place? for the next section instead of using a nearestPointOnCurve node, the detection circle is expanded to a full nurbsSurface and the ClosestPointOnSurface node is used to attach the ikhandles to the mesh.

This works better as now the skirt wraps around the knee and fakes a sense of gravity, but one downside of using the nearestPointOnCurve and closestPointOnSurface is that they wrap around the object. So sometimes the detection is on the wrong side of the surface.

The next iteration was based on this tutorial by Riham Toulan. In stead of a closestPointOnsruface the ikhandle is now attached to a keepout node that is placed on the chain itself. As soon as the collision mesh hits this keepout node the ik handle is pushed in the local direction that is given in the inDirection vector attribute. This simple connection gives the exact same output as the previous test, but it has far less nodes, does not need the transformation limits on the joints and is far more stable.