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Both are featured in the video and both have credits visible through the microscope.
Microscopes can see video on a laserdisc
71–80 of 99 posts
Re: Microscopes can see video on a laserdisc
#72Earlier quoted context omitted.
Uncompressed digital encoding might still result in recognizable structures, but probably not as nicely as here.
Only the CD had uncompressed data.
CD's have repatterened uncompressed data using scrambling codes to keep the waveform stable (i.e. ~50% on/off)
And a Laserdisc with digital sound literally has that CD audio EFM waveform in the lower frequencies.
Re: Microscopes can see video on a laserdisc
#73Earlier quoted context omitted.
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.
Watch the video if you believe it's worth being clear. The credits are perfectly visible on both the LaserDisc AND the CED. Approx 22:00-24:00 is the laser disc and 25:00 onwards is the CED. Enjoy.
Wow. Downvoted for factual clarification and helpful citation. No idea what drives such people, but must logically assume deception and obfuscation.
Re: Microscopes can see video on a laserdisc
#74Just an aside - I love that he's using The Mind's Eye (https://www.imdb.com/title/tt0167285/), which is a video that really captured my imagination when I was young (along with Beyond the Mind's Eye) and changed the course of my life as it got me into 3D animation at a young age.
Re: Microscopes can see video on a laserdisc
#75I'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 1970s tech, so of course there was no compression. It's basically a composite video signal etched into the medium. Every revolution of the disc is one full frame (or two fields). So when you look at it, the adjacent grooves represent the same lines of video in different frames.
Now imagine if you picked a Y coordinate and extracted the corresponding row of pixels from every frame of a video file, and stacked them vertically. If there was scrolling text, or if the camera moved vertically, you would see a meaningful image, the same way a scanner obtains a complete image by moving a single-row sensor across whatever you're scanning. This is the same effect, just arising from the way the video signal is laid out on the disc.
Re: Microscopes can see video on a laserdisc
#76Re: Microscopes can see video on a laserdisc
#77Earlier quoted context omitted.
Watch the video if you believe it's worth being clear. The credits are perfectly visible on both the LaserDisc AND the CED. Approx 22:00-24:00 is the laser disc and 25:00 onwards is the CED. Enjoy.
Wow. Downvoted for factual clarification and helpful citation. No idea what drives such people, but must logically assume deception and obfuscation.
Ugh, I'm pretty sure it's Big CED deceptively here to muddy the waters and obfuscate superior LaserDisc Technology. Perhaps flag the post so the moderators can see it and make sure we root Big CED out of these forums and out of our lives for good.
Re: Microscopes can see video on a laserdisc
#78Earlier quoted context omitted.
Wow. Downvoted for factual clarification and helpful citation. No idea what drives such people, but must logically assume deception and obfuscation.
Ugh, I'm pretty sure it's Big CED deceptively here to muddy the waters and obfuscate superior LaserDisc Technology. Perhaps flag the post so the moderators can see it and make sure we root Big CED out of these forums and out of our lives for good.
I'm making placards now. Meet you on the corner of Pioneer and 78th st.
Re: Microscopes can see video on a laserdisc
#79As I understand it, this only works with still images that scroll vertically. Each revolution is one frame, so if you compare the data paths next to each other, they don't make up an image but the same single line of several consecutive frames. Scrolling a still image makes the same line on the screen cover a different part of the image each frame, so you can sort of make out what the original image looked like. The…
Great points.
And it just so happens in this video that the scrolling was at a speed where everything was preserved and also not stretched. Too slow and it would be elongated vertically on the disc and too fast and it would be compressed and you'd miss information.
Re: Microscopes can see video on a laserdisc
#80Earlier quoted context omitted.
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.
Watch the video if you believe it's worth being clear. The credits are perfectly visible on both the LaserDisc AND the CED. Approx 22:00-24:00 is the laser disc and 25:00 onwards is the CED. Enjoy.
And to support your point even further, in the video he captures the credits off a disc with constant angular velocity, but he _also_ completely lucks out and captures an image from a disc with constant linear velocity.
I'm so sick of this negative attitude. I get it when it comes to politics or more complex systems or conceptual ideas. But holy hell, we're talking about a "money shot" to get people interested in the subject.