I have nothing but admiration for the engineers that originally developed NTSC color television standards and technology. An impressive achievement in the history of mankind that is not fully appreciated by the common man. Salute.

@videolabguy

6 жыл бұрын

This was all done in the period of 1950 to 1954. This was nearly alien technology at the time. As a tribute to one of the pioneers of color television at RCA, I constructed and actual triniscope color monitor with three 1 inch CRTs. kzread.info/dash/bejne/aaKh1byugsSWkbg.html I had to construct a color matrix to take component YUV and make RGB with sync to drive the three CRT monitors. Works GREAT!

@elijahvincent985

2 жыл бұрын

The FCC is DUMB for getting rid of it. This is too reliable and robust of a system to kill.

@GORF_EMPIRE

Жыл бұрын

NTSC is ridiculously complex when you break it down. The fact that they managed to get color working on a B&W system to maintain backward compatibility is almost miraculous.

@altebander2767

Жыл бұрын

@@GORF_EMPIRE Yes, but then they botched it by changing the line standard ever so slightly to make monochrome video have a vertical refresh frequency at 60Hz and colour video at 60000/1001Hz. That means that monochrome and color video are incompatible. You may get some equipment to work with both, but essential parts of the studio equipment, like sync pulse generators, will need to be changed. Monochrome recordings will play slower on colour stations, and vice versa. Switching or mixing between monochrome and colour sources is essentially impossible, unless you modify the monochrome source to be off standard. All that because they didn't want to change the audio subcarrier frequency... something that has been proven fairly easy to do by some countries like the GDR which switched it.

@davidmackenzie8441

3 ай бұрын

Every time I hear someone joke about NTSC, I wince a little bit. This is 1940s/50s technology and given the problem they had to solve, it was top notch engineering. What's that, another standard improved on it a decade later? Color me shocked.

For me it was never enough to just remember my favorite cartoons for me I wanted to know the magic of how we got our favorite tv shows at all. Fascinating stuff

Can you rewind the tape and execute the actions the narrator tells you to do for the next recording? :-) (Adapting the color hues.... :D )

Great explanation, answers so many holes I had in my understanding of colour analog TV. Still amazes me how they achieved this with analog electronics and made it backwards compatible.

Today, KZread is still yuv420, 1080p is really 540 lines of colour resolution.

I know I‘m late, but how about performing the steps mentioned in the video on the actual video itself? They‘re giving you color bars. 😀

Maybe the best explanation I've ever seen. And that closing music is strangely zany!

An amazing story of technological achievement. Twenty five years ago, this video was my professional "Bible." Today, it is an irrelevant anachronism of primitive technology. How many things do we hold vital today, that will likewise become inconsequential in twenty five more years?

@martinomaranzana8386

6 жыл бұрын

I'm learning right now about these concepts to be able to build/bend video devices for art purposes, and this video has been an awesome breakdown of the fundamentals -defintely not an irrelevant anachronism for me.

@HughTVDX

10 ай бұрын

That video has very smeary colours, and the hue doesn't look right to me, must have been in the conversion/playback process.

@MisakaMikotoDesu

2 ай бұрын

@@martinomaranzana8386 This signaling is still relevant today, even though it's not as common. Many security cameras for example work using composite for example. People who do upkeep on old computers or old displays will also need this knowledge to do anything. The Raspberry Pi can output composite, and most TVs still accept composite input through the headphone jack. Thank you for uploading it.

whoever thought of this was pure genius

Lovely video. Just wish 1979 era video tapes were of beter quality hehe

Hi! Do you have access to the video it refers to about analog video basics? They make references to it in the beginning.

Thanks for sharing.

@atwaterpub

9 жыл бұрын

Gordon Freeman Thanks for watching. I have no idea WHY anyone would be interested in this antiquated technology no matter how amazing it really was. In the 1990's, I attended a talk by Charles Poynton where he explained the development of color TV and the different color space conversions necessary for analog broadcast. Unbelievably elegant solution to a phenomenally complex problem. HOW the original engineers thought of it is a marvel. Of course, all the original technical specification development notes are lost to the dust of time. The video feedback examples on this youtube channel atwaterpub are dependent on analog signal processing technology and could not even be created with today's digital technology. In much the same way, Integrated circuit guitar amplifiers cannot generate the same audio feedback sound as an analog tube guitar amplifier.

@GoldSrc_

9 жыл бұрын

***** Yeah, this answered a few questions I had when I was a kid.

amazing video

A few things that are not brought up in the video are: 1) color carrier signal shows up as a checker board pattern moving upward on B&W TV sets. 2) color TV sets have lower luma resolution than B&W sets, to filter out the color carrier. 3) Even with the luma resolution reduced, there still is spectral overlapping between the color carrier and the luminance, because they chose to have a slightly noisy picture over having an excessively blurry but noiseless picture.

@PascalGienger

11 ай бұрын

More modern black and white sets contained a bandwidth limiter to reduce the color noise - similar to mono FM radios filtering out everything above 15kHz even when not having a stereo decoder in the radio.

I've used test patterns broadcasted in off-hours to adjust my TV before and it worked well. I was always told that a taped pattern wouldn't - that I'd need a generator (when I was 11 this was a little expensive to ask for christmas). Perhaps it was from a real generator at the studio even through a transmitter it worked? Thanks for the info

@rty1955

2 жыл бұрын

Can you clarify your question? A broadcast television station has a master sync generator. All signals are derived from this generator. When color bars are recorded and played back, it is the job of a professional video tape machine to reproduce these colors accurately. These colors are monitored by a vectorscope. On the vectorscope there are boxes on the faceplate that each color is represented by a dot. This dot is the phase difference from the subcarrier of 3.58Mhz. If the dot is not in the box vertically, that means the intensity is not correct, if the dot is not in the box horizontally, the "hue" is not accurate. Home videotape machine are absolutely terrible. On a vectorscope, home videotape machines the dots are NEVER in the boxes. They wiggle side to side and thus produce terrible color

@filter4now

2 жыл бұрын

@@rty1955 Thank you - you answered my question. That makes perfect sense.

@altebander2767

Жыл бұрын

Well there are 2 reasons why test patterns were usually not from tape: 1. VTRs are by no means perfect. They introduce all kinds of imperfections which usually are corrected by processing amplifiers at their outputs. 2. VTRs are much more expensive to run than even the most complex test pattern generators.

Chances are, if you ever watched "See & Learn: Colors" in the 1980s, you might have seen the color bars with the color names written on them.

@henrikolsson2586

Жыл бұрын

I made the same observation, that a video on colour TV had such poor colour quality. :-) I suppose it is due to multiple generations of video tapes. Otherwise it was a very good presentation. Another good video on the same subject can be seen on the Vintage TEK museum.

33:43 As far as I'm concerned, Colombia used NTSC, not SECAM.

@t0nito

15 күн бұрын

Who said anything about Columbia?!

@deltakid0

15 күн бұрын

​@@t0nitoit's not _said_ but colored in the map, I think you are also watching the video, aren't you?

15:54 How did he do that?!

14:35 Y-Signal bzw. Luminanzsignal, 15:45 Komponentensignal Teil 1, 17:17 Komponentensignal Teil 2

@atwaterpub

3 жыл бұрын

OK. I don't know

@altebander2767

Жыл бұрын

@@atwaterpub Those are the German words for those concepts.

This is hella complicated...

@GORF_EMPIRE

Жыл бұрын

Yeah..there is a lot going on in color television.

Those colors didn't look right at all.