Hitachi EVR Player EV-1500E . 1971 

Yes, but why ? Why not have colour throughout ? Why need a separated chrome film ??

@@cashawX10 A good question!

​@@cashawX10they must have deemed this more cost effective than putting a color tube in

Because the pinch rollers are original, towards the end of the film, certain ones would slip between the capstan shaft and pinch roller and the picture would lose vertical lock, so I reduced the take up torque, on the take up spool, but the knock on effect is, when a certain amount of film gets on the take up spool, it hits a lever that moves the mechanism into play mode, as this moves a lot of things, like the optical head towards the film in the gate, it needs high take take up torque, that I reduced, so the only way is to help it by hand, if I could find new good condition pinch rollers, then I could put both players back to normal

Got it,, thanks ! @@vintagevideo4044

Although the pal TV system runs at 25 frames per second, the film has 50 frames second printed on it and thought this, they produce a interlaced picture, but the white image on the CRT tube, generates a standard 625 line pattern that the optical system, focuses though the film and on to the photo multiplier tubes, so the tubes output a signal that has the film picture information in it and a 625 line position, that can be turned back into a picture, all this very complicated system was created as at the time it was cheaper, than any video tape system that was around

I understand, thank you, it’s a very interesting device, I’ve never seen anything like it, a miracle of engineering

EVR is really a film format, is printed on micro film, type film for cheapness, and even the colour films are printed on micro film that has no colour in it. They were made at one dedicated facility in the UK. So the EVR players, are really a film scanner, the sound is magnetic, the original idea was a cheap home system, but the complicated method of making the films, meant they were more expensive than planned. So not a huge amount were sold. But as the smaller formats of video tape at that time were not very compatible between machines, EVR had a few years life. Before things like the Philips N1500 VCR came along and could record and was very compatible between machines

@@vintagevideo4044 Thanks for the information. I gives me a clearer understanding of the system, and the method it uses to record video and audio. It reminds me of the rope memory utilized in the Apollo Guidance Computer. An efficient way of fulfilling the task required. However, a dead-end in terms of wide-spread adoption elsewhere.

@@vintagevideo4044 Very interesting device and video! So if I am not mistaken, is an EVR tape similar to Super 8mm film with an audio track?

It is similar to 8mm film, but because a film projector mechanism was seen as to expensive to use, they did not use sprocket holes in the film, that's why used the flying spot technique and the colour films were printed on black and white white film, with the pattern of lines beside the picture to be decoded in to colour for the picture, its is elaborate, but all done to keep the price low of the player and films

@@fernanr8377 The EV-1500E used a system which worked, sort of. However, it was ultimately a dead-end. There much superior methods of recording video already in existence. They just needed to be in a packaged in a format convenient for home use.

No , it's a fully developed by Hitachi inside, the deck and circuits are totally different from the original CBS, Motorola design

@@vintagevideo4044 Well that’s odd, because at the Hitachi museum here in Tokyo. It says Hitachi licensed the EVR technology from CBS.

You are right about, it's licensed by CBS, but you are then free to do your own designs, like Hitachi did, the curved gate is stainless steel, the flying spot scanning tube is Hitachi designed, plus many other things

It was meant to be a home playback unit , but was used by various businesses, like schools and particularly oil rigs

Not even close to broadcast quality. This was developed by CBS in the US for the home market. But in the end it was only used for a few years for company PR videos and sales training. It was actually rubbish because over time the film just gets more and more scratched.

@@sidecarcnI believe CBS Laboratories (developers of EVR) actually did develop a broadcast version of EVR called BEVR (Broadcast EVR). I'm not sure if it was ever commercially released like EVR was though.

@@RyanSchweitzer77 They tried. But, honestly who ever thought it was a good idea should have had their head examined.