DVHS on a Budget 184
Kerhop writes "ecoustics.com has an article on how to convert SVHS tapes to work in DVHS recorders which is similar to modifying a floppy drive (like we did years ago) to double the storage. There's two holes on a DVHS cassette and a single hole on the SVHS tape. The hole common to both permits DVHS tapes to handle SVHS signals; the hole unique to DVHS is what we want to focus on. Just cut off the top four to five millimeters of the pin within the recorder itself."
Mod affects future products? (Score:3, Insightful)
So the question is, will you be forced to upgrade if you can't mod your current hardware?
Re:Mod affects future products? (Score:4, Insightful)
As long as the marketplace is as price-sensitive as it is currently, I think there is no reason to fear that manufacturers will do anything that will raise the price of their hardware.
Perhaps there is a reason... (Score:5, Insightful)
Re:Perhaps there is a reason... (Score:5, Informative)
With a digital signal there's less reason to worry about noise, and thus less reason to use the highest quality media than there would be with an analog signal.
If they're smart, they might just be taking their cheapest-to-produce tapes and selling them at a premium as DVHS.
Re:Perhaps there is a reason... (Score:2)
With digital (especially REALLY compressed digital) data, you get drop out till the next resync, shit frames, ect...
Re:Perhaps there is a reason... (Score:2, Informative)
Re:Perhaps there is a reason... (Score:2, Insightful)
Well, maybe so. Actually, I bet so. Just like the story of floppy disks (single sided vs. double sided vs. high density), the actual industrial process might be exactly identical, but the testing phase will allow different grades of quality.
I've read some people suggest that SVHS and DVHS might be exactly the same media, just sold as different to make potentially more money. Well, that would be actually counter-productive; products need to pass some tests before being ready to get sold. That wouldn't make
Re:Perhaps there is a reason... (Score:2)
Let's say there are multiple grades for a given product which are only necessitated by marketing reasons. Let's also say that having one manufacturing line is cheaper than multiple, and that manufacturing to the highest grade isn't necessarily more expensive than manufacturing to the lower grade. In that case you would
Re:Perhaps there is a reason... (Score:2)
This is just bogus. Its much cheaper to produce one widget then it is two differnet widgets. Why do you assume they aren't doing the same level of testing on both? Film is film, they just throw it into a different casing. All the film is the same quality...they just wanted to say DVHS is better and thus justifies more
Re:Perhaps there is a reason... (Score:2, Insightful)
I did talk about the usual case, where indeed the manufacturing process is the exact same (so, no extra cost here), but the final products are graded through some kind of final testing before shipping. The testing can be the exact same too and just lead different results as to classify the end product. This is very often how the industrial process works. In that scenario, there is no extra cost; the different grades are just determined at the end of the fabrication process. Of course, there is also a batch
Re:Perhaps there is a reason... (Score:2)
Why would they bother categorizing lower grade items as SVHS? That would take time and cost more money. More likely they'll throw out anything that doesn't meet the DVHS standards?
Besides, if they are only manufactoring DVHS, how could they possibly expect to meet SVHS quotas? They'd have to adjust thier lines to garentee a certain failure rate (one that would p
Re:mnb Re:Perhaps there is a reason... (Score:2)
Re:mnb Re:Perhaps there is a reason... (Score:2)
Remember when cd burners first came out, people didn't have audio blank cds nor stand alone cd burners, AND IT WORKED JUST FINE. If it doesn't work, its because they built the player to look for an expensive disc, that doens't provide any higher quality then the non expensive disc...just like they added an extra pin...but that doesn't mean that your SVHS tape isn't capable of doing the s
Re:Perhaps there is a reason... (Score:2)
In most situations it is not economical to produce multiple products. There's actually no difference in VHS and SVHS tapes, I learned around 93-94 that a simple mod was all it took. However the general concept at the time was that S
Re:Perhaps there is a reason... (Score:2)
NVIDIA GeForceFX cards can be converted into use as professional Quadro cards [nvworld.ru].
Identical chips, but graded according to maximum clock speed and control circuitry on the circuit board.
BE CAREFUL (Score:5, Informative)
Read carefully (Score:2)
Re:Read carefully (Score:2)
Re:Read carefully (Score:2)
Re:BE CAREFUL (Score:5, Interesting)
But well, floppies back in the days used to be made with a decent quality margin over what was needed for their labelled format, and such "upgraded" old ones were a lot more trustworthy than the full-sized floppies you could buy a few years later.
Re:BE CAREFUL (Score:2)
Nowadays,
So, you'll fare better converting them into beer pads, gutting them to make a string of their
Re:BE CAREFUL (Score:2)
What do you mean by "broke"? How in the hell would removing a pin in a player BREAK a tape?
I think you were reckless in the process of making a hole in the casing, and damaged the tape. Of course, this article explicitly tells you that making a hole in the tape doesn't really work, hence the modification of the player itself.
Good plan (Score:5, Funny)
Re:Good plan (Score:3, Informative)
Re:Good plan (Score:2)
wrong for so many reasons (Score:4, Insightful)
This makes lots of sense, just cut of a metal pin (in a video recorder that will not react well to any stray metal filings) rather than bypass the switch that the pin connects to.
mnb Re:wrong for so many reasons (Score:2, Informative)
to bad you didn't RTFA and see it was a plastic pin
still, good point about bypassing the switch.
Re:mnb Re:wrong for so many reasons (Score:2)
This is dumb... (Score:4, Insightful)
When your crappy svhs tapes don't work and have dropouts when recording in DVHS mode... don't complain to the company.. you bought sh*tty tape!
it was the same with floppies... I never trusted any floppy that some moron punched a hole in.
This is not feature restriction, the manufacturer is not trying to screw you... They put an extra hole in the tape to tell the player that this tape will actually work with the deck properly!
Cheers,
-ben
Re:This is dumb... (Score:2, Informative)
I am not sure you understand Capitalism.
This is not dumb... (Score:5, Insightful)
I pose these questions because people are increasingly finding that for marketing purposes companies are rebranding and ever-so-slightly modifying things, like casings in this instance, so that they can create different price points while using materials with no particular difference.
Smart people in this community have found out that they can change how their DVD drives work by reflashing the firmware, and some have figured out how to make their low-line burner drives work as the high-end product by similar means. I wouldn't be surprised if someone reflashed the firmware on a hard disk drive, low-level-formatted it, and found that the part was otherwise identical to the model with a quarter more capacity.
There is every reason to assume that "tape is tape" in this instance would apply, and that for the sake of manufacturing ease they've gone to using the same media for both SVHS and DVHS, simply using a different package for the newer, "better" standard.
Re:This is not dumb... (Score:5, Interesting)
Would this not be a precedent against branding the same tapes with different qualities?
Re:This is not dumb... (Score:3, Informative)
You can do the same SVHS signal VHS tape too... (Score:2)
I used to work for VMS, and we used the VS4820s almost exclusivly along with b
Re:You can do the same SVHS signal VHS tape too... (Score:2)
Something to consider is that since the SVHS market is rather small, the videotape manufacturers might have switched to making all of the physical tape as DVHS tape, and just placed it into an SVHS cartridge. This would mean that SVHS and DVHS tapes now made are identical media. If that is so, then this method would definitely work.
Re:This is not dumb... (Score:3, Insightful)
SVHS tapes have a higher coercitivity than regular tape, which means that it takes a stronger magnetic signal to write the information to the tape. It also means that on tapes with a low coercitivity, the signal can be too strong and will not record properly.
This was the case for drilled or modified VHS tapes. Sure, they'd record, but you'd often get artifacts and degredation after time has passed. I have some drilled VHS tapes that looked per
Re:This is not dumb... (Score:2)
Re:This is dumb... (Score:2)
Re:This is dumb... (Score:2)
Oh, and it made sense, by the way, as long as you didn't carry anything vital in those "upgraded" disks. Buying a pack of HD diskettes still cost a bit at the time so most people (like me) reused the 720K ones at 1.44 capacity until they flipped out. And according to my experience, a pack of DD disks from a good brand w
Re:This is dumb... (Score:2)
Re:This is dumb... (Score:3, Interesting)
mods: +1 insightful? should be +1 funny instead...
Re:This is dumb... (Score:3, Interesting)
Re:This is dumb... (Score:2)
This is why I put a switch on my drive so I could switch between HD and DD. This was circa 1989 when local stores within walking distance simply did not sell HD discs. The only one who did wanted $40+ a 10 pack. It was true that the DD media was sub par to HD media at the time, it was good enough to exchange files. I think I may have used as many as 30 floppies in this way. Later on we believed that they use
Never had a problem with modified floppies (Score:2)
Almost the same idea with 8mm tapes. (Score:3, Interesting)
And in other news... (Score:4, Insightful)
The quality of the media is what limits the tape, not a pin. A pin just tells the recorder what quality the media is, so it doesn't try to write more complicated data than the medium can store.
Who has a DVHS? (Score:5, Insightful)
Re:Who has a DVHS? (Score:3, Informative)
Actaully (Score:2)
I just saw them friday. The HD tapes video quality looks wonderful on an HD screen. "End of Days" looked great. Plus, you can record up to 35 hours of SD video to it (analog or digital SD) for those of us still on analog.
Re:Actaully (Score:2)
Right now I'd say that DVHS is about where VCRs were when they were still new. But when the HD DVD recorders come out, they're probably going to get blown away.
Soon to come on hackaday.com (Score:3, Funny)
Old Floppy Disks (Score:2, Insightful)
Re:Old Floppy Disks (Score:3, Insightful)
Re:Old Floppy Disks (Score:2)
i've got 20 year old cheap-ass no-name-brand notched discs which still work fine. and "true double sided" from maxell, 3m and fuji which went bad in less than 3 days.
Re:Old Floppy Disks (Score:2)
Yeah; but when did you buy the Maxells, 3Ms and Fujis? If it was recently, then they're unlikely to have the same quality as the older ones (see this comment [slashdot.org]).
BTW, are we discussing 3.5" or 5.25" disks?
Re:Old Floppy Disks (Score:2)
i remember buying packs of 100 no-name (random colored, no manufacturer label) and they would all work fine notched forever. also buying a 10-pack of "1337" "supar" "extreme quality" vendor-branded maxell/3m/fuji/etc around the same time and they would go bad within a few months of light use.
and we are discussing 3.5" disks.
i still have the old no-name colored notched disks. they still work fine. i ended up throwing most of the ma
Re:Old Floppy Disks (Score:2, Informative)
Re:Old Floppy Disks (Score:2)
How would you be sticking it to the man? Those were 5.25 (not 3.5) inch disks and were sold as DD (double sided double density). Drives that didn't need to use the index hole could be nibbled and you could right to the other si
Re:Old Floppy Disks (Score:2, Interesting)
When the floppies were created, both sides went through the exact same manufacturing process. The only difference between the two sides is that the manufacturer tested one side successfully and never tried
Re:Old Floppy Disks (Score:2)
This is hardly surprising considering the way the prices for these things have come down. Even accounting for dirt-cheap Chinese labour and economies of scale, you can only go so cheap before quality/QA gets sacrificed.
However, combine the "price-beats-everything" mentality of the average consumer, with the unglamorous image of the floppy (know anyone who would pay more for a computer nowadays becau
Re:Old Floppy Disks (Score:2)
In 1981, a floppy drive was a maintenance item: you had to align it several times over the life of the drive, and clean the heads several times in between alignments. I've often wondered if the modern `floppy drives are unreliable' attitude stems from the fact that nobody *ever* does this any more. At what point did floppy drive technology change so that maintenance was no longer required? My theory i
Re:Old Floppy Disks (Score:2)
head cleaning was another story.
Re:Old Floppy Disks (Score:2)
Atari 8-bit, with 1050 drives. Also C=64 with the 1541 drive.
The 1050 drives would keep working if you didn't align them, so long as you kept formatting new disks on the same drive... your old disks would gradually quit working as the alignment drifted, and you'd discover that your friends couldn't read your disks most of the time.
Of course, once you got to this point, realigning the drive would mean you couldn't use disks you'd formatted within
Re:Old Floppy Disks (Score:2)
fiddling with the drive alignment was frowned upon, because there wasn't any standard available for you to align your drive to! there were diagnostic 1050 disks, but they weren't easily available. i don't know of a single person who had one (or needed one, for that matter).
the two "bad experiences" you mention have nothing to do with al
Re:Old Floppy Disks (Score:2)
http://en.wikipedia.org/wiki/Commodore_1541
Apparently the 1541 was such a terrible design that it required this, and a whole mini industry of 1541 alignment tools existed at one time.
AFAIK, the 1541 was the only drive that ever required this. The apple II, atari 8-bit and anything else I have ever used never required alignment -- then or since.
The analogy to a floppy disk is perfect... (Score:5, Insightful)
Seriously, why bother with this when there are so many better, faster, more capable storage media available today?
--
One if by troll, two if by redundant...
Re:The analogy to a floppy disk is perfect... (Score:3, Insightful)
Re:The analogy to a floppy disk is perfect... (Score:2)
No, but dirt-cheap hard drives are...
There are also dual-layer DVD burners as well, and with a modern codec, you can fit a couple hours of HDTV on it...
HD-Tivos are available... HDTV-PCI cards are available... HDTV recievers come with Firewire outputs... etc.
I tried recording TV shows to VHS tapes, and I can tell you, it's infinitely more hassle than a fully-digital system, that allows you to instantly seek, erase, overwrite, rewind, etc.
With VHS tapes, I usually
crazy simple hacks (Score:3, Interesting)
IE:
-using pencil to overclock processors
-clipping the floppy to double capacity
wiring a usb end to an xbox controller
-that firmware upgrade to the camera (Canon?) that made it as good as the super expensive model
I'm sure there are more cool hacks like that out there
Re:crazy simple hacks (Score:2)
It actually did no such thing. It activated a couple of modes which weren't normally available, but considerable differences remained between the two.
Random-access vs. linear (Score:3, Interesting)
Along the same lines, we hardly use the VCR anymore, we just record stuff on the computer; once we got a HDTV, we just got another tuner capable of pulling in HD over-the-air programming. Considered getting a hardware appliance like a T*Vo but balked at the idea of paying a monthly subscription fee for something we could get for free (e.g. a two-week listings / scheduling service like TitanTV.com and the devices/programs it supports.)
So, given the choice between buying a DVHS recorder, a T*Vo, and a HTPC, I'll go with a HTPC. Disk space and burnable media are cheap enough (and take up less physical space to store.)
The up-front cost of a HTPC setup vs. a DVHS recorder may indeed be higher, and the cost of media is still higher, but it seems pretty competitive right now. (My thinking is, say a buck per gig on a hard drive, typical 1-hour program is ~8 GB. DL discs (8.5 GB, $6-$10?) here compete with the price of DVHS tapes, but only store half as much as a tape right now. But costs of DL discs will fall quickly (remember how much 4.7 GB DVD-R media USED to cost?) and Blu-ray or DVD-HD will even this out quite a bit more, soon enough.
More importantly -- what's your time and physical storage space worth? (I realize that a HTPC could end up being pretty large, and could also become quite the time-sink, but: in my case, I'm talking about a Mac mini and a ready-made eyeTV hardware/software package from ElGato.)
The one downside to my argument is the 5C flag nonsense. I'd just as soon *not* support yet another copy protection scheme by paying for a DVHS player made by one of those five companies. But the tradeoff is, I have no way of saving anything that is 5C flagged, ie for 'copy once' use. Though there are software based 'virtual' DVHS apps for streaming transport streams over firewire, I haven't seen any 'cracks' for them that disable 5C (yet.)
Summary is Wrong (Score:3, Informative)
Been doing this for 7 years now (Score:4, Informative)
I wonder how this is news, though, since this technique has been around since DVHS first came out.
longeity problems? (Score:2)
Good thing nothing I did back then was that important.
Re:longeity problems? (Score:2)
The tapes do wear out of after a time, like any tape (DVHS or SVHS) so who knows. It's not like tapes are (or should be) archival quality anyway. Anything that has one material sliding over another is going to wear out and be useless in the long run anyway.
DVR 4 l1f3, y0!
DAT and Tape (Score:2, Informative)
Re:DAT and Tape (Score:2, Insightful)
You don't need to modify the DVHS deck (Score:5, Informative)
Re:You don't need to modify the DVHS deck (Score:2)
Thanks, I was going to post this. I have a Panasonic D-VHS deck, and have been recording on S-VHS tapes for years with no need for any mod. This is without a doubt the most out of date item I've ever seen on Slashdot.
I don't get it... (Score:2)
And why the hell is he not using DVD-R for his digital video needs?
Re:I don't get it... (Score:3, Funny)
so badly need,
is in TFA,
you didn't read.
The article does not answer the question "what should I use" the article tells you how to save on tapes if you have a DVHS machine.
Re:I don't get it... (Score:2)
This is an old hack (Score:3, Informative)
The end result is a picture that's better than typical VHS, although whether or not you get the quality of a "real" SVHS tape depends solely on how good the quality of your VHS tape is.
The hack, IIRC, involved drilling an extra hole in the video tape. Easy peasy.
Re:Cut on the recorder? (Score:2, Interesting)
The article mentioned that drilling a hole into the SVHS tapes was considered a "bad idea" for fear of plastic shavings getting on the tape. It was also mentioned that using a soldering iron to melt a hole "didn't work" with the SCHS-->DVHS trick (though it did with the VHS-->SVHS trick. They didn't go into any detail on why it didn't work - I wish they had.
Re:Tape quality (Score:2)
If you do this to go from SVHS to DVHS, if the 'tape quality' is not good enough, you should get no signal at all, or one with constant dropouts.
If you can find a tape that crosses that threshold, you should be good to go, but I would be nervous about integrity after sitting on a shelf for a few years. (Don't do it for anything important!)
Re:Tape quality (Score:2)
and i've got a JVC deck here which records SVHS to standard VHS tapes. indeed it is not quite as good as SVHS but it is visibly much better than standard VHS.
but DVHS is a digital format with error correction and such and DVHS tape spec is so close to standard SVHS that it may not matter all that much. Similar to the fact you can record Digital-8 onto regular Hi-8 tapes.
Re:Tape quality (Score:2)
While analog tends to degrade a little more gracefully, pretty much all digital media incorporates error recovery code. How extensive this code is depends on the media and how valuable the expected data storage is. Thus analog degrades sooner, and pretty much unavoidably. However, seriously degraded media is more recoverable than digital media. But as long as the error recovery method isn't overwhelmed, you're much more likely to get a perfect copy.
So s
Re:Two Things (Score:2)
well you could, but 1080i runs almost 4mbyte/sec which means you'd get ~19 minutes recording time on your typical 4.7gb DVD-RW.
do you really want to use 9.4gb dual layer dvd-r for all your recordings? you do know how freaking expensive they are... and there's no 9.4gb rw yet. not to mention that's still only 38 minutes.
Re:Two Things (Score:2)
Re:Two Things (Score:2)
i can show you were to buy dvhs, today. to record that hdtv program being aired next week.
and er, how much do your blue-laser drives and media cost?
Re:Two Things (Score:2)
I think I remember seeing somewhere that LG has one available, that will be closer to $900 US, which for right now seems reasonable, as they did just come out within the last year. Blu-Ray production is supposed to ramp up pretty fast this year.
I've seen DVHS recorders available right now for $300 to $900, so it looks l
Re:Two Things (Score:2)
is rewritable blu-ray media even available yet?
Re:Two Things (Score:4, Insightful)
This is stupid. There is no reason to store the full-bitrate MPEG-2 HDTV stream. You can requant the MPEG-2 in realtime, and perhaps halve the bitrate, without significant quality loss... So, you're up to 80 minutes on a single DVD (dual-layer)... Besides that, you can get much more significant gains by re-encoding to MPEG-4 (or VP6, WMV, etc) which would at least double that, giving you 160 minutes on a dual-layer DVD without noticable quality loss, or 80 minutes on your single-layer DVD. Since most movies run under 100 minutes or so, you would just have to lose slightly more quality to get it to fit on a dirt-cheap DVD.
Yes, they are less expensive than DVHS tapes. Even if they were more expensive, I think most people have come to realize the serious advantages to random-access storage.
Besides, who need DVDs... USB2/Firewire hard drives are even better, cheap, and extremely high capacity.
Re:Two Things (Score:2)
on a bigscreen TV, the quality loss is VERY noticeable. which is the whole point behind recording the original full rate HDTV stream.
of course if you don't care about video quality, watching it on some crappy NTSC tv or 21" PC monitor then you probably don't care, so go ahead and recode it into pixelated mushiness, compress the stuffing out of it and shoehorn it into those DVDs.
Re:Two Things (Score:2)
You aren't really paying attention, are you?
When re-encoding to MPEG-4 or another modern codec, you can get about a 4X reduction WITHOUT ANY REAL QUALITY LOSS. No, it ISN'T noticable on a bigscreen TV. MPEG-2 is a very old and underpowered codec, and it's absolutely mind-boggling that they chose to use it in a new TV standard...
Re:Two Things (Score:2)
That's pretty shortsighted. Within 10-15 years you'll be able to do that in just a couple of minutes and you won't bat an eyelid when doing it. You might briefly think back to the days when it took days to get a movie downloaded, but then your download will be finished and you can move on with your life...
Re:Two Things (Score:2)
Clearly, you have never owned an external hard drive. Exchanging files with others is incredibly easy. You meet each other somewhere, plug-in the drives, copy files, and in a matter of very few minutes, you both have the files you want.
Personally, if I had to send a very large file to someone, I wouldn't have any reservations about copying it to a spare 40GB hard drive I have
Re:next up... (Score:2)
They'd work better in your Laserdisc player or RCA Selectavision Video Disc player. The former has a hole about the same size as the 45, and the latter was a video disc player that used a vinyl media and a needle to play the movie.
Re:next up... (Score:2)
I'd buy one if they wouldn't be so ugly and most notably they aren't exactly cheap.
Stupid is as stupid posts (Score:5, Insightful)
Did you actually try it?
Anybody that was used to day in day out 8" floppy operations knew a bit about what brands of media worked and what didn't. This data was applicable to 5" floppies and then 3".
My first box of low density 3" floppies cost me $50 US.
If you used cheap floppies and punchd them you'd get a certain failure rate roughly equivalent to the failure rate of unpunched floppies on low density drives. Crap is crap no matter how many holes you punch in it.
I've used hundreds of punched disks. After a year of 18 hours a day they'd start to get errors, punched or unpunched. Use good media. Duh.
<rant>
It appears only 2 people besides me RTFA and slashdot [portal.com] is beginning to make usenet look as credible as a peer reviewed scientific journal by comparison.
RTFA or don't bother posting. You may well be a clueless fucktard but posting here without reading no longer keeps this fact hidden. Spam waste less of my time than you nimrods.
And spare me the friggin dupe alerts. If that's all you have to say then STFU [vrx.net].
</rant>