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Portal 2 SP Challenges [Incinerator - 5 portals] 256 colors

763 views · Published 8 October 2011 · 1:46 · Indexed 21 September 2026

Channel: Bisqwit · 2011 · Gaming

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Portal 2 challenge mode map "incinerator" solved with 5 portals and 256 colors in 424x240 resolution.

My computer is slow, and the challenge mode does not allow recording with host_timescale, so the scripted elements (the fall in the beginning; the cubes dropping for incineration, and the... things that GlaDOS moves) are jerky. It is a glitch in the demo player of the Source engine. It occurs when a demo is replayed at a higher framerate than it was recorded on.


What?
I create videos like this. If you did not like it, please unsee it and watch something else instead.
Though in all seriousness, this is not really what I planned on publishing next. I just did it for fun. I'm working on something that takes a bit of time.
Gameplaywise, it is not a particularly special video either. In fact, someone already solved it in 3 portals.


The demo was recorded at 640x480 resolution with lowest possible settings so that it could be recorded with maximal rate (given the lack of host_timescale). Then I replayed it in 848x480 using highest possible settings, at a constant 90 fps rate (host_framerate and startmovie). I did not use a higher resolution, because I was going to downscale it to 424x240 anyway. Then I downsampled it into 424x240 using lanczos filter for spatial scaling implemented in MEncoder and into 30 fps using a gaussian curve for temporal smoothing implemented in Hudmaker; and dithered it using Yliluoma-2 positional dithering algorithm implemented in Animmerger, with a dynamic 256-color palette chosen with Neuquant neural network quantization algorithm implemented in Animmerger. The palette is constant for every 1000 frames. (So it changes a total of 4 times during the video.)

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