Turn down your volume, the beeping noise is loud.

it has been 2 years since I uploaded my last Portal 2 SSTV video. [ Ссылка ]
let's celebrate with another video using the same presentation style.

this demo recording was recorded in real-time on my crappy pc. (previous demos used host_framerate 60 as long as it made sense to use sv_cheats 1)
there was a major issue when going through portals in demo playback, and I had to use the editor in demoui to toggle demo_interpolateview to avoid the weirdness with portals

here's the text from the pictures since its kinda hard to read.

Portal 2 Announcement ARG
• Created by people working on Portal 2
• Intended for enthusiastic superfans
• Budget of less than $100
• Portal updated to include radios, broadcasting mysterious SSTV images
• Certain images contained pieces of an MD5 hash of a phone number
• Phone number led to an old-fashioned BBS
• Estimated time to 'solve': 7 hours
• Actual time to solve: 7 hours 16 minutes

Portal 2 SSTV images
• Analogue format used in HAM radio
• Watching video of ISS SSTV with SSTV software running, sound from laptop speakers unexpectedly picked up by microphone
• Peculiar squeaking and beeping, degrades in visually interesting ways
• Photos of Valve whiteboards, equipment and anything science-related lying around
• Finding radios in Portal made for fun meta-game - everyone could join in

Aperture Laboratories BBS
• Single analogue phone line in a designer's kitchen (phone systems in Valve office too modern)
• Old PC running Linux, attached to a 2400 bps modem from 1987 (via USB to serial adaptor)
• mgetty to handle calls, custom PHP script looping through plot fragments and home-made ANSI-art conversions of Portal 2 artwork
• Transmitted about 20MB of data in total
• Phoneline constantly engaged!
• Several spare modems in case one died - none did
• SSH backdoor for updates and monitoring (possible to watch exactly what people were seeing as they dialed in)
• Combined might of internets is terrifying


Pictures: [ Ссылка ] these pictures have been digitally decoded by converting them to mmv format using FFMPEG and playing them in MMSSTV

more info: [ Ссылка ]
[ Ссылка ]


the rest of this description is the avisynth script used to create this video. the first line references a screen recording of the sstv application cropped to 320x240. the 4th line references the gameplay video. the third line contains the delay in frames before the sstv video plays. enjoy!


sstv = converttorgb32(avisource("p2sstv2-edit.avi"))
sstv = ColorKeyMask (sstv, $FFFFFF, 0,0,0)
sstv = blankclip(sstv, length = 1220, color = $FFFFFF) + sstv + blankclip(sstv, length = 1, color = $FFFFFF)
bg = avisource("sstv_commentary.avi")


dfd = MaskMaker(sstv, type="c3", white=true, gyt=255,rt=255,bt=255, et=255,ert=255,ebt=255,ft=255,fet=255,fert=255,febt=255 )
dcd = crop(dfd,1,0,1,240)
dcd = pointresize(dcd,272,240)
ddd = overlay(dfd,dcd)
dvd = crop(dfd,318,0,1,240)
dvd = pointresize(dvd,48,240)
ddd = overlay(ddd,dvd,272)
ddd = threshold(ddd, 128)
mask = invert(ddd)

#fd = ColorDrops(sstv, dfd, 0, 1064, 319,239, $00FF00 )

o = overlay(bg,sstv,130,30,mask)
#o = overlay(o,fd,320,0)
#o = overlay(o,ddd,0,240)

return o

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