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Old 11-29-2013, 03:40 PM   #1
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120 min. DVD vs 240 min DVD

If I have a program to record that is just a few minutes over 2 hours (2 hrs. 10 min. ) will the clarity and picture perfection be any different between using 4 hrs recording time on a 120 min DVD or 4 hrs on a 240 min DVD?

I also have several home made tapes to transfer to DVD that will be just over the two hour limit also. As I understand it, any recording over the SP (2Hr) recording time will start to deteriote the quality of the picture.

Not sure I understand the difference between 120 min and a 240 min DVD. Course at this time it may be a mute point since I haven't been able to find any 240 minute -R/-RW DVDs, which my machine requires.

Appreciate any expert DVD advice.
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Old 11-30-2013, 07:20 AM   #2
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the 120 hr should just record 120, depending on recording program used, some may kick it back out showing over time limit.
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Old 11-30-2013, 07:27 AM   #3
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I transferred all my old home movies to DVD. Depending on the originals quality you might not see a difference in 2 or 4 hour recording. DVDs are rather cheap so try it both ways and see.
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Old 11-30-2013, 07:42 AM   #4
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DVDs are rated in storage capacity, not time. A standard DVD is 4.7GB. A dual layer DVD is 8.5Gb. You need a DVD writer that is capable of dual layer writing to use the DL disks. If your DVD isn't marked -DL, then forget it.

Is this a computer DVD burner or a stand-alone unit. If you record your tapes to your computer, the software you use can adjust the quality of the recording to fit more time on a standard size DVD. It might be that your stand-alone DVD player has pre-sets for 120min and 240min on a 4.7GB disk, in which case the picture quality will be worse as it compresses the image more to fit.
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Old 11-30-2013, 01:16 PM   #5
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Quote:
Originally Posted by FlyingDiver View Post
DVDs are rated in storage capacity, not time. A standard DVD is 4.7GB. A dual layer DVD is 8.5Gb. You need a DVD writer that is capable of dual layer writing to use the DL disks. If your DVD isn't marked -DL, then forget it.

Is this a computer DVD burner or a stand-alone unit. If you record your tapes to your computer, the software you use can adjust the quality of the recording to fit more time on a standard size DVD. It might be that your stand-alone DVD player has pre-sets for 120min and 240min on a 4.7GB disk, in which case the picture quality will be worse as it compresses the image more to fit.
This is a stand-alone DVD/VCR recorder combo I purchased from Walmart to transfer some home made tapes to DVD, which it seems to be doing a decent job. The dubbing mode allows for 2hr, 4hr, 6hr, & 8hr recording. The manual says to use only -R/-RW discs so guess that means the -DL is unusable. Undoubtedly for a tape with 2hr & 10-30 minutes in it I have no choice but to use either 2 discs or use the 4hr dubbing mode.
Appreciate the information, saves me the time trying to find any 240 minute DL discs in the stores.
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Old 11-30-2013, 02:36 PM   #6
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There's also double sided disks, but they're no more convenient to use than single sided, and a pain to label besides. So I'd stick with the single sided disks.
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Old 11-30-2013, 03:05 PM   #7
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This is definitely a learning process for me. Going from LP records to CDs were enough but now going from VCR tapes to DVDs is another. And I guess I still have to learn what Blue Ray is all about. I'm usually at least 2-3 steps behind technology progress.
Appreciate all the help.
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Old 11-30-2013, 03:07 PM   #8
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For most purposes, you can just think of BluRay as higher capacity DVDs. Like 25-50GB. Internally, the way the videos have to be compressed is very different from DVD. Also, the interactive parts of BR disks are way more complicated than the fairly simplistic menu and image system of DVDs. I don't know if there are stand alone BR writers like your DVD writer. I have an external BR drive on my iMac, but I only use it for reading BR disks. I've never tried to create one.
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