Playing CDs on a DVD Player: Classic or Dud?

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To cut a long story short, our new DVD player works fine with DVDs but normal CDs sometimes get stuck, leaving embarrassing seconds-long silences in the middle of pieces of music. It's not all CDs, but it's by no means unusual. These are normal CDs, bought in shops. When they get stuck it makes a noise a bit like a CD-Rom player (i.e. backwards and forwards, do the okey cokey, that kind of thing). I think I've got a dud player, but before I make a fool of myself at the shop, I thought I'd ask if this is a normal or semi-normal occurrence with DVD players. They hardly seem to sell normal CD players any more, which makes the matter URGENT and KEY for music lovers everywhere. The piece of equipment giving problems is a Panasonic DVD-RV32, which seems to get good reviews, albeit revolving around its telly-tastic properties rather than anything musical. I suppose the question is, are DVD players generally crap at playing CDs? It's not like I'm an audiophile or anything, but I think this is beyond the pale.

PJ Miller (PJ Miller), Monday, 25 November 2002 14:51 (twenty-three years ago)

I've got a cheapo DVD player which I got for £90 about a year ago and it plays CD's both regular and copies fine. Sound quality is fine too but I'm a lapsed audiophile. I suspect you've got a dud. Check the cd's work ok on another machine first though before going back to the shop.

Billy Dods (Billy Dods), Monday, 25 November 2002 14:55 (twenty-three years ago)

Yes, they do work on another machine, althought there are discs which don't work on another machine which do work on this machine.

I forget to say 'thanks in advance' before. I'm losing my touch.

PJ Miller (PJ Miller), Monday, 25 November 2002 14:59 (twenty-three years ago)

its probably a crappatatamatic machine. Take it back! Warranty!!

Mike Hanle y (mike), Monday, 25 November 2002 15:00 (twenty-three years ago)

I've got the rest of this week to take it back, otherwise it becomes a matter for the dreaded Technical Service.

PJ Miller (PJ Miller), Monday, 25 November 2002 15:32 (twenty-three years ago)

are DVD players generally crap at playing CDs?

All depends. I've got a reasonable enough model that has a hard time playing CDs with a thick amount of artwork on the disc itself (say the Manics' Holy Bible, for instance. Why this has never affected any similarly treated DVDs is a mystery. I'm going to be getting a new player anyway to satisfy my 'play anything released anywhere' jones...

Ned Raggett (Ned), Monday, 25 November 2002 15:58 (twenty-three years ago)

CD player's toleracne of scratches etc varies widely between different models, and I think PJM's problem comes from that. My v.v.old Sony DVD player isn't brilliant with scratched CDs, but then it can't even play CD-Rs so I guess CD playback was an afterthought.

That said, it works brilliantly as a CD player - the Resume functionality alone, as well as having Jog/Shuttle controls, being able to programme it on a TV screen, and it appears to be totally shock proof.

Graham (graham), Monday, 25 November 2002 16:13 (twenty-three years ago)

I was going to say they hadn't got any *visible* scratches, but upon closer inspection two of them look like those old 'like skates on ice' adverts. I suppose it is no coincidence that they both live in those rather fetching cardboard sleeves.

:-(

PJ Miller (PJ Miller), Monday, 25 November 2002 17:38 (twenty-three years ago)

It's true, you can hear it through the telly!

:-O

Should you want to.

PJ Miller (PJ Miller), Monday, 25 November 2002 17:52 (twenty-three years ago)

The lens on a DVD player is more sensitive than on a CD player because the data is obviously written more tightly on the disc.

And also, since sound is not the only priority on a DVD player -
to get the quality of a $500 CD player you would have to pay maybe three times as much.

, Monday, 25 November 2002 19:13 (twenty-three years ago)

I think this is kind of what I was getting at, except I have to admit that nothing about this is obvious to me, I am a techno-dullard.

Shouldn't greater sensitivity make it less likely to get stuck, etc, because it was making such a precise reading that any glitches could be chewed up and spat out, making everything sound perfect?

PJ Miller (PJ Miller), Monday, 25 November 2002 19:22 (twenty-three years ago)

The different pit size/packing density of DVDs is irrelevant with regard to CD/CD-R playback as most new machines (the Panasonic RV-32 included) have dual laser assemblies or dual-focus lenses - they can read at two different wavelengths of light, so handle CD media as well as a dedicated CD player.

Older machines can't manage CD-Rs at all, but do manage CDs (Graham: Orange Book part II media uses a dye invisible to the 650nm DVD laser wavelength [it's absorbed in both burned and unburned regions] - hence the problem with CD-Rs and the need for a separate beam/optics. CD-RWs [Orange Book III] use an alloy whose reflectivity is much lower than the data layer in CDs or CD-Rs, but which is *not* wavelength-dependent. In order to deal with retrieval of data from double-layer DVDs, even first-gen DVD machines were equipped with the automatic gain control circuitry you now find in the newest CD players, so they generally *can* read CD-RW. Phew!)

While PJM's Panasonic does have 650nm and 780nm lasers, it might not have a dual-focusing system, so it might struggle to read the data layer on a CD (1.2mm into the surface of disc, compared to 0.6mm for DVDs) if there's lots of nasty scratches in the way. There is some disclaimer on the Panasonic website about this model reading CD-R and CD-RW only if the disc is in good nick. I guess it doesn't quite conform to the MultiRead standard, but just makes a vague gesture in that direction. A bit like when people ask me the way to Selhurst Park on a Saturday afternoon.

Michael Jones (MichaelJ), Monday, 25 November 2002 23:42 (twenty-three years ago)

Thanks Mike, that's exactly the kind of response I was hoping for. The discovery that I've got dual laser assemblies has done wonders for my self-esteem, and I'm going to get that 'Orange Book' series out next time the library van comes round. I think we're getting to the heart of the matter. I've never really worried much about scratches, when CDs came out, one of the selling points was that you could spread jam on them and they'd still work perfectly. Obv. rub. The instruction boooklet says something about CD-Rs depending on recording circumstances. I think the only CD-Rs I've got were done by Mooro and Keith, so I imagine the recording circumstances were pretty rock'n'roll in both cases. But I digress. The DVD player has been taken back and changed. The chap in the shop took the new one out of its box and put it in our old box. Presumably he then put the old faulty player in the new box and stuck it straight back on the pile to be sold to the next person who comes along. I will Report Back on the new one's progress, if there's anything worth reporting.

In the meantime, thank you all very much.

PJ Miller (PJ Miller), Tuesday, 26 November 2002 21:06 (twenty-three years ago)

Me = in awe of Steady Mike & his Knowledge

babylon's burning (Mooro), Tuesday, 26 November 2002 23:40 (twenty-three years ago)

Oh, all this stuff is out there on the Web. I'm not even sure I'm right about the focusing business - if a DVD machine can manage dual-layer DVDs, it can surely manage to adjust its focus for a CD data surface.

The reason this stuff is floating round my head is I'm thinking of buying a cheap-ish DVD machine (though maybe not a supermarket dubious-brand special), with a view to maybe trading it in for a DVD-recorder when the formats sort themselves out next year. Any recommendations/warnings welcomed. Leaning towards a (massively reduced) Sony from Richer Sounds at the mo' - do they still buy back your stuff at 50% of the retail price on the Supercare plan? Needs to play DVD-R(Authoring) discs, have digital outputs, do the whole NTSC to 60Hz PAL thing; don't need progressive scan or RGB outs.

Michael Jones (MichaelJ), Wednesday, 27 November 2002 09:49 (twenty-three years ago)

do they still buy back your stuff at 50% of the retail price on the Supercare plan?

Yes

Mooro (Mooro), Wednesday, 27 November 2002 10:50 (twenty-three years ago)

The current low-end Sony (NS300 I think, the ones with an off-centre tray, anyway) only has a coaxial digital output, so be careful of it.

Graham (graham), Wednesday, 27 November 2002 11:10 (twenty-three years ago)

It does sound dangerous.

N. (nickdastoor), Wednesday, 27 November 2002 12:20 (twenty-three years ago)

There's a new DVD player in my house at the moment which my parents bought, I've been too busy/lazy to set it up. What are the chances of it being able to play MP3s? I mean, is this a standard thing with the recent ones?

Ronan (Ronan), Wednesday, 27 November 2002 12:27 (twenty-three years ago)

Ronan, you are the laziest man alive.

Next on ILE:

"I've just bought a new toaster. How likely is it that it will brown the tops of the slices of bread properly? I suppose I could go and try it for myself but I thought it would be easier to ask on the internet."

N. (nickdastoor), Wednesday, 27 November 2002 12:34 (twenty-three years ago)

Quite likely is it's current model Ronan. It should say it quite clearly on the box/front though.

Graham (graham), Wednesday, 27 November 2002 12:44 (twenty-three years ago)

But N you must understand I have no intention of ever using the DVD player and I considered it unlikely that it would play mp3s. The only thing I'll ever use it for is to get Underworld Live on DVD and watch any extra tracks before realising sitting in my living room watching music is the worst place in the world to enjoy it.

Ronan (Ronan), Wednesday, 27 November 2002 12:48 (twenty-three years ago)

If it plays MP3s I will hook it up tonight, if not, see it next year sometime.

Ronan (Ronan), Wednesday, 27 November 2002 13:05 (twenty-three years ago)

Ronan: Some do, some don't. It'll play MP3s if it says "This plays MP3, by the way" on the box or case somewhere. It's a new enough feature to be trumpeted like that.

Graham: Coax is OK - will link with MD and HD just fine. Maplins coax-optical (or vice versa) convertor on shopping list also, to save dragging bits of gear around. Curious to see what comes out of the digital output - whether it's true 24/96k PCM or not.

Michael Jones (MichaelJ), Wednesday, 27 November 2002 13:11 (twenty-three years ago)

What softwa medi discs can you get that out of? Mine alegedly has 96/24 DACs but I have no idea why).

Graham (graham), Wednesday, 27 November 2002 13:47 (twenty-three years ago)

I'm still trying to figure out whether the minimum requirement for audio tracks on PAL DVDs is MPEG-2 *and* Dolby Digital *and* PCM, or just one of those. What comes out of the digital outputs must be stereo PCM, but it might be raw 24/96k PCM, PCM downsampled to less than that, or something created out of the lossy DD track - it depends partly on the disc, partly on the player, and partly on me not fully understanding the standards.

There is dicking about to be done.

Michael Jones (MichaelJ), Wednesday, 27 November 2002 14:18 (twenty-three years ago)

Answers here

My amp only ever says PCM 44.1, but the only time it's been set to mix DD to PCM was when I first got it, so I'll hva e another fiddle.

Graham (graham), Wednesday, 27 November 2002 14:34 (twenty-three years ago)

Good link, ta. Ok, so the audio on most video DVDs is DD, therefore what comes out of the digital output is DD in a Dolby Surround format, which can be restored to its multi-channel glory by the appropriate decoder. Or, with some players, you can switch the output to just DD stereo. I'm guessing that what spills out of the S/PDIF jack, even though it might contain embedded surround data, is still perfectly fine to copy digitally to MD, hard-disk, whatever?

I guess there are music-only DVD-'video' discs (i.e. *not* DVD-A), which maybe make use of the PCM tracks and don't contain DD or MPEG-2 audio, and these might push hi-res pure PCM out of the digital output. Right now, I can't think of any examples. (Bjork, Autechre?)

Michael Jones (MichaelJ), Wednesday, 27 November 2002 19:16 (twenty-three years ago)

Neither Bjork nor Autechre post here, Michael.

I wouldn't know where to look on the web to find out this kind of thing, I don't even know what I want to know before I find out. I did a quick search for 'Panasonic DVD blah blah problems', which apparently works very well for prospective car buyers, but all I could find were glowing reports.

Mooro, is Babylon's Burning your nickname from the Ruts list?

MP3 ability seems to be quite common, apparently this kind of thing is important to young people these days.

PJ Miller (PJ Miller), Wednesday, 27 November 2002 19:35 (twenty-three years ago)

I think the only CD-Rs I've got were done by Mooro and Keith, so I imagine the recording circumstances were pretty rock'n'roll in both cases.

Just trying to make pun on 'burning' ...


... and obv failing


no more silly names on this thread (Mooro), Wednesday, 27 November 2002 22:54 (twenty-three years ago)

That's far too technical for me, Dave. The one Keith did for me contains FREEEEEEEEEEEE ME! by Roger Daltrey.

What about those CD repair kits? They look about like a Ronco/K-Tel Remington Fluff-Away, you stick your scratchoXOR CD in and turn a plaggy handle and hey presto! it comes out as good as new. Or not. I suppose they work on the same principle as T-Cut.

PJ Miller (PJ Miller), Thursday, 28 November 2002 08:52 (twenty-three years ago)

In the menu (on mine at least, a Sony DVP-S525) you can change whether the output from a DD/DTS source is as stereo PCM or as a DD/DTS stream. If you put a DD stream into a minidisc recorder it will not work. You can also choose whether the stereo output is pure stereo or a Dolby Surround encoded version of the DD. I have never seen a DVD with PCM audio tracks, and the bandwidth (1128kbps) seems redicuulous (DD 5.1=384, DTS = 750 something). Mine appears to output DD as PCM 48KHz in both mixdown modes.

Graham (graham), Thursday, 28 November 2002 13:27 (twenty-three years ago)

Haha PJM's dual laser assemblies don't pass muster.

Tim (Tim), Thursday, 28 November 2002 13:34 (twenty-three years ago)

It doesn't play MP3s=it can stay in the box till I have someone gets me Underworld Live on DVD.

Ronan (Ronan), Thursday, 28 November 2002 16:11 (twenty-three years ago)

Increasingly sophisticated porn is also available.

N. (nickdastoor), Thursday, 28 November 2002 17:56 (twenty-three years ago)

It's clear to me from the above that my dual laser assembly gets a B+, you cheeky monkey.

PJ Miller (PJ Miller), Thursday, 28 November 2002 18:20 (twenty-three years ago)

Nick is right - pr0n is the only genre making use of the multiple-angle capabilities of the format. That and a King Crimson live thing. It's all wank, then.

Graham: thanks for clearing that up. The cheap-ish Sony I've been eyeing up saucily is the DVP-NS700, now replaced by the 705, and allegedly 60% off at Richer Sounds. Gawd knows if they'll have any in stock. I'm sure it does everything I want. The 305 I've been using at work and that seems nice enough, but lacks certain pushing-imaginary-specs-up-bridge-of-nose twattery. That I like.

Is the multi-region thing still under-the-counter, don't-say-anything-to-the-wife type shadiness, or do some machines (from the major manufacturers) just come with kosher RCE-busting? I note the multi-region Sony at RS is 40 quid more.

Now begins the rather pathetic quest for DVDs with PCM tracks on them.

(Sorry for the swearing).

Michael Jones (MichaelJ), Thursday, 28 November 2002 21:58 (twenty-three years ago)

Now begins the rather pathetic quest for DVDs with PCM tracks on them.

Ooh, I found one: the film version of Tommy!

Michael Jones (MichaelJ), Friday, 29 November 2002 19:09 (twenty-three years ago)

Here's a whole list.

Graham (graham), Friday, 29 November 2002 19:15 (twenty-three years ago)

Yes, that's the list I found - but there was only one worth mentioning.

PJM needs to report back on his replacement machine.

Michael Jones (MichaelJ), Friday, 29 November 2002 19:32 (twenty-three years ago)

Reporting Back:

The new machine coped admirably with the first of the offending CDs (Disc 2 of Nigeria 70) so my hopes were pretty high that the problem had been solved. Sadly, the second CD (Disc 2 of Harlem World - The Sound of the Big Apple Rappin') didn't quite make it. But I tried it on another CD player and it didn't work on that either, although the skipping was of the more traditional variety that we all love so much. So I think we can put it down to being a knackered CD. Good job it's crap anyway. The track that won't work is 'Party People' by Rappermatical 5.

You can always rely on 'Tommy'.

According to the box, Jimi Hendrix's 'Blue Wild Angel' features the option of watching multi-angled shots of the same thing at the same time. It's not all porn, porn, porn.

PJ Miller (PJ Miller), Friday, 29 November 2002 21:10 (twenty-three years ago)


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