best broadcasting quality

[Saunders]

How can we put in order the media products according to get best broadcasting quality?

Digital betacam, Betacam SP, bluray dvds

and
would I lose quality if I transfer a movie from bluray dvds to betacam media?

[Shadowself]

Originally Posted by Saunders

How can we put in order the media products according to get best broadcasting quality?

Digital betacam, Betacam SP, bluray dvds

and
would I lose quality if I transfer a movie from bluray dvds to betacam media?

While some absolute ranking is obvious, e.g., 1080p/60 is better than grayscale NTSC, it is virtually impossible to put together an absolute ranking of what is better than what. As has been shown in various other places in this forum what is shown on the screen is very dependent upon not only the medium but also the compression methodology, how that methodology it put into practice, how it is uncompressed and scaled to be show and the method of transmitting that to the screen. There are just way too many variables to give any kind of absolute ranking.

[AV_Integrated]

That is true, but generally speaking, the push is away from analog tape formats like Beta to digital formats like DV-Cam. But, there are just a ton of factors that go into the quality of the original video...
INCLUDING:

1. Image sensor quality of the camera
2. Camera lens quality
3. Accuracy for colors
4. Accuracy for contrast
5. Solid focussing and accurate depth of field
6. Storage method (encoding)
7. Storage medium
8. Cabling quality/build quality of product to keep out interference and other detrimental video factors.

I am just touching the surface of all of it, but the reality is that Blu-ray is a digital format. It is no better or worse for QUALITY than any other digital format. The video itself isn't 'Blu-ray' video. It is just data. It could be MPEG2, it could be AVC, or VC-1. It could even be something different and stored on a Blu-ray disc. The disc doesn't care! It's just zeroes and ones stored on it. So, digital is digital is digital. It comes in hundreds of flavors, and some look far better than others, but it greatly depends on the amount of space available.

Analog - like Beta - has the POTENTIAL for looking better than digital, but it is almost impossible to realize this potential. That is, it absolutely requires the most expensive analog gear to make the most of analog video. In comparison, I have seen ESPN film entire sports presentations at the X-Games using $2,000 Canon GL-1 cameras which you can buy at Best Buy and then the video is stored on Mini-DV tapes.

Would you lose quality if you transferred movies from Blu-ray Discs (DVDs is a different format!) to Betacam? Yes - absolutely. You would be going from digital video to analog video and that means you get a generational loss in video quality. Always. If you go from Blu-ray to a hard drive, entirely digitally, you will have zero loss because you are making a true 1:1 copy without any converging from digtal to analog between the original and copy.

[Psiweaver]

quality of electronics.

[thunderhawk]

Originally Posted by AV_Integrated

Would you lose quality if you transferred movies from Blu-ray Discs (DVDs is a different format!) to Betacam? Yes - absolutely. You would be going from digital video to analog video and that means you get a generational loss in video quality. Always. If you go from Blu-ray to a hard drive, entirely digitally, you will have zero loss because you are making a true 1:1 copy without any converging from digtal to analog between the original and copy.

Aah the nicest part of digital technologies... The ability to make a true 1:1 copy... If you copy your data from time to time, your data can exist forever (in theory, if you don't have any data loss).
Good use: DVD aren't so scratch resistant. Solution: create a 1:1 copy.
A very nice idea, only, Hollywood doesn't agree. They say we should buy the movie again. So they create something called 'copy protection'.

And that's the origin of the entire copy protection debate.

Also, with analog media, you have something called 'bandwith'. For example, a VHS tape can't hold as much 'data' as a betamax tape, on one spot of the tape (VHS holds 240i for PAL while Beta holds 250i for PAL if I'm not mistaking). With digital media this bandwith limitation is independent from the media. You can put a HD movie on a CD as well, although you'll notice the capacity limit of the CD is much smaller then the one for Blu-ray Disc (0.7 GB vs 25 GB). This means that movies in a digital format are independent from the carrier, whereas analog movies aren't (if you want to avoid quality loss (information loss)).

[Psiweaver]

hopefully backup is allowed under fair use.

[Saunders]

Thank you all for the answers.

then, transferring from blu-ray to dvd media?

is there any product to make this easily? for example I have philips dvdr630vr which has both dvd and vhs recorder and I can transfer from dvd to vhs.

[Psiweaver]

well it wouldn't make sense to go from blu ray to dvd really simply because blu ray has a much higher storage capacity and supports hd content while dvd does not.