Here's a screen capture of the end credits visible on the disc the videos worth it but I do think sometimes you need to start with the money shot https://ibb.co/v4KK88fF
This is from a CED not a laserdisc.
If you watch the video, he looked at both.
Microscopes can see video on a laserdisc
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Re: Microscopes can see video on a laserdisc
#32Not nearly as cool, but I was able to show a colleague the letters in a raster image section of a pdf using xxd by varying the output width
I wrote a simple tool, when I was a kid, that dumped binaries into VGA mode 0x13 and allowed me to vary the width. Mode 0x13 is one byte per pixel so it was just a simple REP MOVSB to put data into the buffer (no worrying about bitplanes). It was so useful in reverse engineering software. Besides raster data, regular data structures often jump out.
I did the same thing to evaluate random number generators by drawing pixels with the count value. You see a pattern, line or clusters? Bad generator.
Re: Microscopes can see video on a laserdisc
#33I'm not that familiar with CED but the fact that we can see the images with microscopes is because these are analog discs? And that was because computing power back then was non-existent so they didn't use any kind of compression?
This is a distinction without meaning: all digital anything is analogue if you look closely enough
> And that was because computing power back then was non-existent so they didn't use any kind of compression?
Compression is not a medium-level detail. You can easily store compressed data on a laserdisc.
Re: Microscopes can see video on a laserdisc
#34Is there a version that doesn't require watching a video please? This would be 10x faster and easier as a text blob
Re: Microscopes can see video on a laserdisc
#35I'm not that familiar with CED but the fact that we can see the images with microscopes is because these are analog discs? And that was because computing power back then was non-existent so they didn't use any kind of compression?
This is a distinction without meaning: all digital anything is analogue if you look closely enough > And that was because computing power back then was non-existent so they didn't use any kind of compression? Compression is not a medium-level detail. You can easily store compressed data on a laserdisc.
No, with digital, you need encoding. How can you even compare binary with embedded images.
Re: Microscopes can see video on a laserdisc
#36Earlier quoted context omitted.
This is a distinction without meaning: all digital anything is analogue if you look closely enough > And that was because computing power back then was non-existent so they didn't use any kind of compression? Compression is not a medium-level detail. You can easily store compressed data on a laserdisc.
No, with digital, you need encoding. How can you even compare binary with embedded images.
> How can you even compare binary with embedded images.
How are the images encoded?
Re: Microscopes can see video on a laserdisc
#37Very cool but, I was hoping he was going to spin it and align with the camera’s refresh rate.
That would be cool with a variable motor and a 3d printed mount maybe.
Re: Microscopes can see video on a laserdisc
#38Earlier quoted context omitted.
This is from a CED not a laserdisc.
If you watch the video, he looked at both.
Yes, but the end credits mentioned by the parent and the link to the image is the CED. That and the title of this post make it seem like this level of image clarity is from a LaserDisc which its not. I think it's worth being clear.
Re: Microscopes can see video on a laserdisc
#39Fun fact about laser discs. They are analogue not digital. CD’s store digital information with the presence or absence of pits. Fairly ancient but still fundamentally feels like a very old version of a thumb drive. Laser discs are not digital. They encode the analogue video signal’s value as the length of the pit. It is digitized in the time domain - sampled at some frequency, but the “vertical” signal value is store…
So how does writes work? Does an analog signal translate into pit-lengths with absolute precision?
Re: Microscopes can see video on a laserdisc
#40Is there a version that doesn't require watching a video please? This would be 10x faster and easier as a text blob
yes, you must save it to a laserdisc, and then observe it though a highly magnified digital microscope looking for a specific frame.