So now that the image glitching trend has settled ... has anyone tried glitching audio (with results that aren't just noise)?
how to glitch images?
>>53985595
Circuitbending, google it motherfucker.
>>53985624
Convert to SSTV audio signal > add noise and shit in audacity > convert back
Read up about JPEG and mess with the quantization tables or the bytes of the frame
Write a program that takes the raw RGB values and messes with them
>>53985709
nevermind i just found a site that does it
>>53985634
Will do, thank you.
convert a.jpg -depth 8 RGB:- | aplay -c2 -fu8 -r32000
>>53985816
We've gone too far.
>>53985709
>>53986328
just getting started
https://jii.moe/Nk7316NJ-.opusffmpeg -i a.opus -c:a pcm_u8 -f u8 - | ffmpeg -f rawvideo -pix_fmt yuv420p -r 12 -s 320x180 -i - -f matroska - | mpv -
>>53986652
You crazy motherfucker
I like you
>>53986798convert a.gif GRAY:- | mpv -
What you're thinking of is vapor wave
>>53987252
>even has sound
fucking black magic bullshit
>>53987252
>>53986652
>>53985816
imagemagick?
>>53987623
that's an easy one, GIF is a lossless format, so i simply make a standard mkv file and put that data into the GIF as-is
this on the other hand...in=ed1.jpg; ffmpeg -f rawvideo -pix_fmt yuv420p -r 6 -s 160x120 -i <(convert ${in} -depth 8 RGB:- | head -c 12326400) -f u8 -ac 2 -ar 32000 -i <(convert ${in} -depth 8 RGB:- | tail -c +12326399) -aspect 4:3 -c:v huffyuv -c:a pcm_s16le -f matroska - | mpv -
>>53987854
yea, "convert" is part of imagemagick
>>53987252
So does this mean I can finally make 4MB webms with sound and upload them outside of /wsg/?
>>53988224
ah, sound is much better with the volume brought up
>>53988466
sure, though the GIF example is rather easy to detect automatically, as it's not raw data, but a formatted mkv file% convert a.gif GRAY:- | file -
/dev/stdin: Matroska data
>>53988520
>>53988224
incase anyone doesn't have the appropriate tools available, this is the output;
https://jii.moe/4y9-lkryb.mkv
>>53988520
>>53988466
oh, you could obfuscate it, thoughconvert a.gif GRAY:- | tail -c +76801 | mpv -
>>53988466
Yes but that's against the rules and you may get banned for it.
Just use a pomf clone if you really need to post a video with sound. It's much more convenient anyway.
>>53985595
Autechre perfected this over a decade ago
>>53988909[file] Reading from stdin...
Failed to recognize file format.
>>53988909
If you can make your initial frame the same size every time, you can putconvert a.gif GRAY:- | tail -c +76801 | mpv -as the initial frame and have the offset value still be correct
>>53989020
be sure to use the command in that post as well, tail is crucial for skipping over non-mkv data (here simply as the first "frame")
>>53989031
that's true, though it doesn't need to be a full or single frame, and since it's lossless data, you can put whatever you like in it, even encrypted data
>>53989064
For obfuscation, what if you were to gzip tarball the mkv before turning it into a gif?
>>53989143
then it could be detected as "gzip data"
like in all related cases, only (headerless) encrypted data can't be blindly detected, as there's no patterns by design
>>53985595
But up, your image is just layer>stylize>wind>stagger in photoshop.
>>53989249
OP*
On mobile.
>>53989249
No, search for "pixelsorting".
>>53985816
Can I haz sauce on the song?
>>53987252
How do you make these files? I tried few times but I'm getting unexpected end-of-file error.
When was this ever a trend? I came up with this on my own, and I haven't seen anyone else doing it. So fuck off
>>53989826
you get that error if the input isn't exactly the size of the output you specified
i didn't bother aligning mine
the gif one is really simple, just;convert -depth 8 -size 320x240 GRAY:covera.raw a.gif
>>53989803
https://www.youtube.com/watch?v=sDhoHOidGeM&feature=youtu.be
>>53990035
oh, should be noted, -depth 8 isn't always needed, but imagemagick will try to default to 16bpc where it can
>>53990035
and if someone cares to know, this one >>53988520 is;ffmpeg -r 24 -i ed1.mp4 -r 6 -vf scale=160:120 -f rawvideo -pix_fmt yuv420p -c:v rawvideo ed1vid.raw
ffmpeg -i ed1.mp4 -map 0:1 -ac 2 -ar 32000 -f u8 -c:a pcm_u8 ed1snd.raw
cat ed1vid.raw ed1snd.raw > ed1cat.raw
convert -depth 8 -size 2560x2300 RGB:ed1cat.raw -sampling-factor 1x1 -quality 86 ed1.jpg
the offset is simply the size of the raw video file (bytes)
>>53990157
>>53990035
This is so incredibly cool, thanks for posting it!
>>53990157
>>53990213
np, also, for fun, if you mess with the values like video size when decoding it, you'll get ... some results
keep in mind this is raw data, it will always show /something/
webm related, using an incorrect 158x118 video size
>>53985595
just use pulseaudio
Image glitching is the most fun I've ever had.
Audio glitching is not that hard, there are several way to convert the music via notepad glitches etc.
>>53986652
What were the commands for this one?
>>53985595
The best way to go about it is probably Max by cycling 74, they offer the ability to easily edit videos as sound. It is not random glitching however.
>>53990417ffmpeg -i clannad.mp4 -vf scale=320:-1 -f rawvideo -pix_fmt yuv420p -c:v rawvideo clannad.raw
ffmpeg -f u8 -ar 48000 -ac 2 -i clannad.raw -c:a libopus -b:a 40k a.opus
ffmpeg -i a.opus -c:a pcm_u8 -f u8 - | ffmpeg -f rawvideo -pix_fmt yuv420p -r 12 -s 320x180 -i - -c:v huffyuv -f matroska - | mpv -
10/10 thread.
Thanks for all who contributed so far!
Have some glitching with SED:convert in bmp:- | sed 's/$/07/g' | convert bmp:- out
>>53990591
By the way, that's basically a rework of the "Wordpad" glitch. Windows users could simply open an image in wordpad and save the file for this glitch.
>>53990591
heh, if i use that in >>53988520
the picture slowly scrolls left
>>53990727ffmpeg -i clannad.mp4 -map 0:0 -f rawvideo -pix_fmt yuv420p - | sed 's/$/07/g' | ffmpeg -f rawvideo -s 640x360 -pix_fmt yuv420p -r "24/1.001" -i - -c:v huffyuv -f matroska - | mpv -
This shit happened to my external HDD, all of the images are like this.
Any of you guys know that secret to making pictures where the thumbnail is different from when you clicked on it, only the image looks normal and not shitty like that pepe one?
>>53991311
You need to alternate pixels from the image that appears on thumbnails and the pixels from the full-size image and then mess with the PNG gamma property IIRC.
You can find guides quite easily.
>>53991311
Theres a ruby script called "DoubleVision" that does the job. Search for it on github.
Shifted the red channel as well.
This is fun.
>>53985777
Link?
Also, checked.
>>53987252
This is useful for this sort of thing (not the glitching)
https://valkryst.com/schillsaver/
It was a project started on /g/ to try and use YouTube as cloud storage.
