I have a question or request for guidelines how to approach my task to create an interactive pan inside a video play.
I have one video file.
It is a 4 x 4K video - meaning a video file in resolution size of (4x3840) × 2160 ( 4 4K videos stitched together horizontally side by side)
The idea is to play it with some software player, having either a mouse / touchpad / keyboard entry to pan left and right.
( VLC player has a similar option with its zoom function, but not exactly what I wanted - because the navigation icons and navigation view stay overimposed.)
The idea is to have the vertical dimension locked - and allow only panning left and right while the video would play / loop.
Do You have any idea how to approach and programm something like that?
I came to a problem at the described topic of having a 4 x 4K video file in resolution size of (4x3840) × 2160 ( 4 times 4K videos stitched together horizontally side by side)
Not related directly to vvvv.
My Windows device can not play such a long format in X axis.
Also vvvv can not.
As I still would like to have a scrolling / panning effect at presenting a normal 4K resolution and behind running / controlled looping of a 4 separate videos that would scroll side by side and present themselves as “stiched” - how can I program such an effect?
With multiple file streams, translate nodes with controlled values ( X positions) and only one Quad / renderer?
You can rearrange your video to be 2x2 * 4k. Then grab the 2 parts (via texture transform) onto 2 quads. First test what is the maximum size your computer can play.
There’s also playback of image stacks with the player node. Though needs to have a fast ssd. See it’s helppatch for more information.
Could you please check - if the attached patch is constructed properly. Meaning - if the process flow is designed in efficiently.
I have managed to get the functionality I want.
Here is an example of a patch for 3 individual 4k videos - each on its own quad - side by side - and these quads are moved left and right as the mouse moves in X coordinate = scrolling.
You can see that I turn on and off play button on each player - if its video is not in the frame - I turn it off. To reduce not needed computation.
Playback / render on full screen is a bit - to be honest too - choppy - does not run smoothly. ( if I compare it with normal video play outside vvvv)
Videos are 4 k each. 30 fps. Short loops - 10 seconds each. Not needed to be in sync with each other. They are also compressed - and only ca 15 Mb in size. MP4. Does this play any role?
I have borrowed my brothers machine - a HP Z2 G4 Workstation / i7-9700 / 16GB / SSD 512GB / Nvidia Quadro P2200 5GB.
I am listing CPU, GPU and memory performance graphs - you can see that CPU gets overloaded. GPU and Memory - OK.
Any hints? How can I optimise the patch flow?
I have read the forums and various node help - and seen some possibilities:
texture to be prepared in a square and later - on display side resized. ( ? )
