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Show HN: Vector Video

55 points by SuperPaintMan 10y ago

jbverschoor 10y ago
SSL chain is not included... Use the proper file from LE.
- sjtgraham 10y ago
  OP's cert includes the Certificate Authority Information Access extension. Safari and Chrome both used this to get the full chain for me.
  - randall 10y ago
    Chrome Version 53.0.2785.143 (64-bit) - no ssl love here. :(
- brudgers 10y ago
  Visited with latest Ubuntu Firefox with no problem.
  - ryan-c 10y ago
    Firefox aggressively caches intermediate certificates and uses them to build trust paths when they're not included by the server. This can mask configuration errors.
    - SuperPaintMan 10y ago
      This here is why I didn't notice any errors. Will patch in a few hours.
- deleted 10y ago
  [deleted]
homero 10y ago
Bad ssl, no intermediate?
anoother 10y ago
If the OP is reading this... Try animating a large cube moving into the logo, and using the boolean subtract modifier between each mesh and this cube. Place the cube on another (invisible) layer, et voila. You can leave your camera fixed in the same place, too. EDIT to add: I should have mentioned, I think this is a very cool idea! I might just steal it one day ;)
- SuperPaintMan 10y ago
  Need to run off to work at the moment but I'll give it a shot. Wouldn't you need to move two cubes through the mesh leaving a small space to be drawn? Steal it by all means!
  - anoother 10y ago
    Don't think so, unless I'm misunderstanding what you have. I basically mean replacing your animated camera with the cube, but still using a [fixed] orthographic camera to look at the face of the solid as the cube cuts it away. I tried using your scripts but Meshlab on my system really doesn't like the data and refuses to produce any output :(
    - SuperPaintMan 10y ago
      MeshLab is finicky, when it can't apply a filter it simply crashes. Best to import the points manually and tweak your filters in the main app. Then you can export the filter script through the filter menu. Launching from a terminal allows tracing of what exactly failed.
syphilis2 10y ago
What's wrong with the frame rate of the GIF animation? It looks silky smooth to me in Firefox.
- SuperPaintMan 10y ago
  To be fair, it's an excellent gif. The other GIFs I was testing this against were as low as 2FPS. Being able to construct a 60 or higherFPS abstracted GIF was one of the initial goals.
33a 10y ago
Reminds me of a little webgl demo I made a long time back: http://mikolalysenko.github.io/gif-3d/ http://mikolalysenko.github.io/gif-3d/
33a 10y ago
Reminds me of a little webgl demo I made a long time back: http://mikolalysenko.github.io/gif-3d/ http://mikolalysenko.github.io/gif-3d/
bhouston 10y ago
Usually people motion interpolation: https://en.wikipedia.org/wiki/Motion_interpolation https://en.wikipedia.org/wiki/Motion_interpolation There are some really perfect algorithms out there for this. And they also do upscaling via a high quality sinc filter: https://en.wikipedia.org/wiki/Whittaker%E2%80%93Shannon_interpolation_formula https://en.wikipedia.org/wiki/Whittaker%E2%80%93Shannon_inte... The main issue you have is gif artifacts from the extreme color quantization. Something like this might help: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.422.1137&rep=rep1&type=pdf http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.422...
- SuperPaintMan 10y ago
  Thanks for the pointers, that last bit on quantization especially.
- dandelany 10y ago
  Yes - OpenCV is a good resource for experimenting with motion interpolation as they implement a few different algorithms: http://docs.opencv.org/2.4/modules/video/doc/motion_analysis_and_object_tracking.html http://docs.opencv.org/2.4/modules/video/doc/motion_analysis... I've had the most success with the Farneback algorithm. There's even a nice CLI utility called Butterflow which wraps ffmpeg+OpenCV Farneback, and allows you to interpolate video with a one-liner on the command line: https://github.com/dthpham/butterflow https://github.com/dthpham/butterflow Here's an example of my results applying Butterflow to satellite images from Himawari - the first half is interpolated, while the second half shows the same frames uninterpolated: https://www.youtube.com/watch?v=8knZ2-cys6M https://www.youtube.com/watch?v=8knZ2-cys6M & a compilation of a few more: https://www.youtube.com/watch?v=1lPsA8J3U0Q https://www.youtube.com/watch?v=1lPsA8J3U0Q
  - semi-extrinsic 10y ago
    That looks amazing, Butterflow goes straight in my toolbox.
syedrezaali 10y ago
Awesome post, I recently made F3, which allows you to design 3D form using image sequences. Check it out: http://www.syedrezaali.com/f3-mac-app/ http://www.syedrezaali.com/f3-mac-app/
macawfish 10y ago
I'm really into this... I have a goal of one day figuring out how to save, render and manipulate 4+ dimensional voxel graphs with unlimited depth. When I say unlimited, I mean that there could be procedural elements at any depth. Basically, I'm talking about some kind of voxel representation that is more or less "scale invariant".

55 points by SuperPaintMan 10y ago

jbverschoor 10y ago

SSL chain is not included... Use the proper file from LE.

sjtgraham 10y ago
OP's cert includes the Certificate Authority Information Access extension. Safari and Chrome both used this to get the full chain for me.
- randall 10y ago
  Chrome Version 53.0.2785.143 (64-bit) - no ssl love here. :(
brudgers 10y ago
Visited with latest Ubuntu Firefox with no problem.
- ryan-c 10y ago
  Firefox aggressively caches intermediate certificates and uses them to build trust paths when they're not included by the server. This can mask configuration errors.
  - SuperPaintMan 10y ago
    This here is why I didn't notice any errors. Will patch in a few hours.
deleted 10y ago
[deleted]

homero 10y ago

Bad ssl, no intermediate?

anoother 10y ago

If the OP is reading this... Try animating a large cube moving into the logo, and using the boolean subtract modifier between each mesh and this cube. Place the cube on another (invisible) layer, et voila. You can leave your camera fixed in the same place, too. EDIT to add: I should have mentioned, I think this is a very cool idea! I might just steal it one day ;)

SuperPaintMan 10y ago
Need to run off to work at the moment but I'll give it a shot. Wouldn't you need to move two cubes through the mesh leaving a small space to be drawn? Steal it by all means!
- anoother 10y ago
  Don't think so, unless I'm misunderstanding what you have. I basically mean replacing your animated camera with the cube, but still using a [fixed] orthographic camera to look at the face of the solid as the cube cuts it away. I tried using your scripts but Meshlab on my system really doesn't like the data and refuses to produce any output :(
  - SuperPaintMan 10y ago
    MeshLab is finicky, when it can't apply a filter it simply crashes. Best to import the points manually and tweak your filters in the main app. Then you can export the filter script through the filter menu. Launching from a terminal allows tracing of what exactly failed.

syphilis2 10y ago

What's wrong with the frame rate of the GIF animation? It looks silky smooth to me in Firefox.

SuperPaintMan 10y ago
To be fair, it's an excellent gif. The other GIFs I was testing this against were as low as 2FPS. Being able to construct a 60 or higherFPS abstracted GIF was one of the initial goals.

33a 10y ago

Reminds me of a little webgl demo I made a long time back: http://mikolalysenko.github.io/gif-3d/ http://mikolalysenko.github.io/gif-3d/

33a 10y ago

Reminds me of a little webgl demo I made a long time back: http://mikolalysenko.github.io/gif-3d/ http://mikolalysenko.github.io/gif-3d/

bhouston 10y ago

Usually people motion interpolation: https://en.wikipedia.org/wiki/Motion_interpolation https://en.wikipedia.org/wiki/Motion_interpolation There are some really perfect algorithms out there for this. And they also do upscaling via a high quality sinc filter: https://en.wikipedia.org/wiki/Whittaker%E2%80%93Shannon_interpolation_formula https://en.wikipedia.org/wiki/Whittaker%E2%80%93Shannon_inte... The main issue you have is gif artifacts from the extreme color quantization. Something like this might help: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.422.1137&rep=rep1&type=pdf http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.422...

SuperPaintMan 10y ago
Thanks for the pointers, that last bit on quantization especially.
dandelany 10y ago
Yes - OpenCV is a good resource for experimenting with motion interpolation as they implement a few different algorithms: http://docs.opencv.org/2.4/modules/video/doc/motion_analysis_and_object_tracking.html http://docs.opencv.org/2.4/modules/video/doc/motion_analysis... I've had the most success with the Farneback algorithm. There's even a nice CLI utility called Butterflow which wraps ffmpeg+OpenCV Farneback, and allows you to interpolate video with a one-liner on the command line: https://github.com/dthpham/butterflow https://github.com/dthpham/butterflow Here's an example of my results applying Butterflow to satellite images from Himawari - the first half is interpolated, while the second half shows the same frames uninterpolated: https://www.youtube.com/watch?v=8knZ2-cys6M https://www.youtube.com/watch?v=8knZ2-cys6M & a compilation of a few more: https://www.youtube.com/watch?v=1lPsA8J3U0Q https://www.youtube.com/watch?v=1lPsA8J3U0Q
- semi-extrinsic 10y ago
  That looks amazing, Butterflow goes straight in my toolbox.

syedrezaali 10y ago

Awesome post, I recently made F3, which allows you to design 3D form using image sequences. Check it out: http://www.syedrezaali.com/f3-mac-app/ http://www.syedrezaali.com/f3-mac-app/

macawfish 10y ago

I'm really into this... I have a goal of one day figuring out how to save, render and manipulate 4+ dimensional voxel graphs with unlimited depth. When I say unlimited, I mean that there could be procedural elements at any depth. Basically, I'm talking about some kind of voxel representation that is more or less "scale invariant".