Open Source at TiVo
CowboyRobot writes "ACM Queue has an article by TiVo co-founder Jim Barton, in which he explains how the company relies on open source technologies to create a closed-source product. A good lesson in how other companies can do the same. From the article: Careful management of our sources to abide by the terms of the GNU General Public License while protecting our proprietary developments is a small price to pay for this benefit."
There is more information on this virus at http://www.cert.org/incident_notes/IN-2003-03.html .
Nils Parker for governer!! He's HUGE http://www.nilsparker.com
yes.
Or you can just use OpenBSD and not worry about any licensing issues.
"Fuck the GPL and let us work".
>in which he explains how the company relies on open >source technologies to create a closed-source product ... but haven't Microsoft been doing this for years with the BSD source code?
--
Craig
Quick, someone erase this article, BEFORE SCO SEES IT! (yes, its a joke)
"Sorry Im not more user-friendly."
I applaud Tivo for showing such appreciation for open source publically. As more and more companies hail the benifits of open source we might see even more developers do so, both lowering development costs and supporting more platforms. Both which are good for consumers. I myself am wedged so far into Microsoft territory that I cannot budge and every application we use for our industry is 100% Microsoft product requirements, whether it be windows or internet explorer. Hopefully continued publicity like this will improve the knowledge of alternative solutions.
I don't know why we let them get away with it all this time. For those who don't know, TiVo runs a modified version of Linux, which is protected by the GPL. Therefore, legally they have always been required to release their source. I guess the Slashdot crowd has always let them slide because they're jizzing their tighty whities over being able to watch 20 hours of Simpson's episodes in an afternoon. If we don't look out for our rights, no one will. Let's give 'em hell.
Boromir, son of Faramir, King of Gondor and Minas Tirith
But, in turn, BSD license does not warrant that it will not become vampirized by some other company. Thus effectively closing development for the software.
GPL protects from vamprires.
Maybe now they'll sue the people who wrote the code they used!
Pulp Audio Weekly - Geek News and Reviews
Anyhow, I love iPods.
And Tivo. If they made a tivo+iPod I would buy three of them.
So mod me up up up if you love iPods and tivos!
I don't need no instructions to know how to rock!!!!
Why do they have any incentive to be "careful" about their use of open-source? Why not just paste it into your proprietary, closed-source application? It's closed-source, so the chances that anyone finds out are slim to nil. Of course, you have to maintain that as the company line...
Indeed, given the "business ethics? we've heard of 'em" nature of business these days, carefully shepherding one's source code to respect open-source rights is a losing value proposition. It takes resources - time, employees' attention, assignment of responsibility, meetings - while helping the company avoid a terrifically small chance of a lawsuit. Not the *right* thing to do, by any means, but probably the *customary* thing to do.
I've been wondering quite a lot recently just how much respect closed-source developers typically afford to open-source code. I think the answer is a dirty little secret of the software biz.
- David Stein
Computer over. Virus = very yes.
Then why are they using System V code?
Maybe it's just MSIE being wierd, but the story appeared in a really small font.
The "printable version" is far easier to read.
Tarsnap: Online backups for the truly paranoid
It's true that Microsoft has been using non-copylefted open source code for years, but it's a greater accomplishment to segregate copylefted programs from proprietary programs.
Will I retire or break 10K?
i mean, everyone knows tivo rocks, right? so if tivo = OSS + proprietary, then OSS + proprietary must also rock. right?
(DISCLAIMER - i have no idea if tivo actually rocks or not - still trying to catch a blurry version of gilmore girls on my 1960s uhf box...)
experimental audiovideo minimalism: Rebuild All Your Ruins
Most companies, if they can, will use 100% open source to create totally closed-source solutions. The exceptions being the 100% microsoft shops, and those guy have all their profits eaten up by licenses, and "of course" they won't open source anything because the licenses restrict that they "can't". (I at one time worked as an ASP programmer and am happily a three-years now PHP programmer).
The old point was, pay for a product, you pay for support; however, this is not true anymore (just try and call MS technical support without having a license you pay $1000 for).. But something like MySQL or PHP you can easily and quickly get help in any forum..
But I digress.. the point is, most "smart" companies do this to keep costs down.
anime+manga together at last.. in real time.
the developers of the Linux SMP code were as respectful of other's IP as Tivo is of GPL code!!
How much did the /. editors get paid to shill for TiVo?
TiVo runs a modified version of Linux, which is protected by the GPL. Therefore, legally they have always been required to release their source.
TiVo has distributed source code for the version of the Linux kernel included in the devices for as long as I can remember.
Will I retire or break 10K?
In case of slashdotting, or if you're just a lazy slashbutt, here's the complete full article source (no "Click here for next page" crap!):
From Server Room to Living Room
From Open Source
Vol. 1, No. 5 - July/August 2003
by Jim Barton
The open source movement, exemplified by the growing acceptance of Linux, is finding its way not only into corporate environments but also into a home near you. For some time now, high-end applications such as software development, computer-aided design and manufacturing, and heavy computational applications have been implemented using Linux and generic PC hardware.
Now, Linux and open source software are making inroads at the other end of the computing spectrum. TiVo, the first commercially available digital video recorder (DVR), provides an example of how embedded devices are increasingly powerful enough to support Linux as an operating system--providing a great deal of leverage to system developers.
A Brief History of Open Source
To many people, the open source movement is a recent phenomenon, springing into consciousness in the late 1990s with the creation of Netscape Navigator and the rise of the Linux operating system. The true beginnings of the open source movement, however, can be traced back to the mid-1980s.
At that time, the computer industry, as well as academia, had become enchanted with the Unix operating system1 and its variants. Computer manufacturers realized that the era of each manufacturer providing a proprietary operating system for its hardware was drawing to a close; while this strategy locked customers to a particular manufacturer, it also limited the ability to acquire new customers and cost a great deal to support.
Unix was originally developed at Bell Laboratories as a reaction to the large, complex, non-portable operating systems of the early 1970s. AT&T did not see a significant opportunity in licensing or supporting an operating system; instead, it provided Unix source code for a nominal license fee and small per-unit royalties. A number of academic efforts sprang up to take advantage of this opportunity and extend the original sources with new and interesting features.
The most famous of these efforts is the Berkeley Software Distribution (BSD) of Unix, which pioneered features such as paging and the "sockets" network abstraction. BSD Unix lives on today, but its descendants are better known, among them: FreeBSD, NetBSD, OpenBSD, and BSDi. This line of Unix development began in 19742 and the BSD developers created many features of modern Unix-based operating systems. In fact, for many years BSD versions of Unix were considered far superior to AT&T Unix in features, performance, and reliability (and many would argue BSD Unix is still the best). This is largely a result of the open and collaborative nature of BSD development at a time when Unix was a little-noticed sideline within the vast halls of AT&T.
In the mid-1980s, every computer manufacturer either provided or planned to provide a Unix-based operating system for its computers. Each company had chosen a particular version of Unix to start with, and then added various proprietary features. Although all of these operating systems claimed to be Unix, software written on one version was often not portable to the other versions.
At this same time, AT&T was breaking up into separate companies in response to a U.S. government antitrust suit, spinning off the telephone operating companies and an unregulated subsidiary. The company was trying to use its wealth of internally developed technologies as a lever to create new revenue streams. Within AT&T there was growing realization that selling and supporting Unix might be a significant new source of revenue. The company began to promote its own version of Unix as the standard for the computing industry and to enforce its intellectual property rights around the Unix trademark and source code.
The prospect of AT&T "taking control" of Unix and the
Between their broken business model (selling hardware that forces you to pay monthly fees for unnecessary service, and leaving you with a useless piece of garbage when they finally die), and cable and satellite providers coming up with PVR hardware for free plus a monthly fee that's cheaper than TIVOs, I'm surprised they still exist.
It will be nice when they do die because it will open the playing field for companies with a proper business model.
You see, in web design, the goal is to make your type as small as possible.
CSS provides an EM unit, which one could use to display text in the user's font size of choice, but this is considered bad design.
For an example of extremely good design, see my website, which I will reproduce here to avoide slashdotting:
.
Just look at all that information crammed into such a small area!
--
the strongest word is still the word "free"
scat porn feat. Michael
was jsut browsing though dishnetwork.com and saw that they offer the software(minus some prop. stuff) fro thier PVR model
http://208.45.37.181/
the first relevant story since the planet/population rescue program began.
Hasn't Symantec also been doing this with their Velociraptor products?
Preventive War is like committing suicide for fear of death. - Otto Von Bismarck
rather than sending jobs to india, lowering TCO is the way to go. as more companies--ie, ernie ball and now tivo--hail the benefits of open source the movement gains momenteum. eventually there will be a[nother] tech revolution......
bring it on.
!(^((ri)|(mp))aa$)
"In general, all open source software in use at TiVo, with the exception of public domain software, falls under the GNU Public Library License."
GNU PLL?
In general, I don't know what the license thingamajig is called but I will write an entire article about it.
Recall the
Moron
Thanks and have an Ashcroft_free weekend,
W00t
Can anyone tell me... If they are going to create a closed-source product, why did they go the Linux route, instead of using (Free/Net/Open)BSD?
I am at a real loss to tell what the advantage is... In a non-embedded environment, it's reasonable, because you want to support the greatest ammount of hardware as possible. But with an embedded system, they only need support for one TV-capture card, one video card, one network card, etc. They aren't using any stock Linux software, it's all custom.
In fact, the things they say were needed in the article, (performance, stability, good vm) are unarguable better in the BSDs.
So why do they use Linux? Not trying to troll, just wondering what advantage it really has in such an embedded system.
Slashdot gets worse every day... Pipedot: News for nerds, without the corporate slant
The whole SCO fiasco is what a dying dinosaur looks like.
Just wait, expect similiar bullshit from the RIAA as they reach their death bed.
Soon to be followed by the MPAA.
My TivO -- One more machine I better make sure I write that $699.00 check to SCO for.
Damn there goes next weeks lunch money.
(+1 Funny) only if I laugh out loud.
I think it is interesting that TiVo says they pay a lot of attention to the security of the device. That is true now, but with the first TiVo devices, getting a BASH prompt on the device turned out to be relatively easy. On boot a menu was available on the serial port with a hardcoded password. Using that password you could make all kinds of changes to the way the machine started up.
He also metions talks about people getting around using the service. For years, the TiVo hacking community has known how to partially emulate the service by creating slice files and manually loading them onto the device. Recently hackers have figured out how to get an unmodified TiVo to use a service emulator. What's interesting about these development efforts is that they are not putting TiVo out of business.
In the article, he makes no mention of the goodwill that TiVo has fostered with their users, even their hackers. Soon after TiVo was created, Richard Bullwinkle, their former "Chief Evangelist" started talking to people on bulletin boards. He was always very helpful and forthcoming, with only minor exceptions. He wouldn't talk about bypassing the TiVo service and he wouldn't talk about extracting video from the device. If you didn't talk about those things, he was perfectly happy to help out. Although TiVo was in business to make money through their service, they didn't screw over people who didn't want to subscribe. That's such a treat from a for-profit company. Imagine Microsoft, who also sells their set-top device at a loss, treating customers who don't want to use theirs for gaming without hostility.
When Andrew Tridgell, (the same guy who created Samba and rsync) figured out how to create TiVo slice files so he could use the machine in Australia, it was probably this goodwill which made him choose to not release the info to the general public. Instead, it remained a closely guarded secret.
Today, years later, the people who have followed in Tridge's footsteps, have refused to destroy TiVo's revenue stream. They have been very careful to try to make sure that only people who can't get TiVo service in their area are allowed to get around it.
I think the goodwill that TiVo has is partly because of their general attitude towards their customers (and towards the hacker community) and partly the fact they used open-source software, and followed the license requirements. And, it is this, not their security measures, which have ensured that they've maintained a revenue stream -- despite using the "razor and razor blades" pricing model.
I just wish Mr. Barton hadn't used a loaded term "service theft" to describe people who are using their TiVos without subscribing to the service. That term would be appropriate if people were downloading TiVo data without having a subscription, but not people who are simply choosing not to subscribe and are finding alternatives.
I'm not RMS, nor do I speak for him, the FSF, or any of the Linux kernel copyright holders. However, you appear to misunderstand a significant point about the development of the GNU Project and GNU/Linux in particular. There's nothing foolish about requiring compliance with the generous GNU General Public License, particularly nothing foolish about insisting that people cooperate in the commons the GNU GPL builds for us all. Nobody is more important than anyone else in this partnership (including Tivo). It is Tivo's job, not ours, to find a way to make money with GPL-covered programs if that is their desire.
Perhaps you aren't aware that the GNU Project (and the continued development of the GNU/Linux operating system in particular) is not about achieving mere popularity at the expense of user's freedom to share and modify. From this essay:
And this essay:
Digital Citizen
I think I should go and leave you alone. Yeah.
Stop this game and hang up the phone. And more.
I should go into the night alone and get inside of the cyclone. It's like I wanted to break my bones to get over you. 'Cos if I stay I'm number two anyway.
Chorus:
Like a bullet you can hurt me,take me,break me.
Like fire you can burn me,convert me.
Like a bullet you can hurt me.
You say there are so many things going on in your life now. It's so very hard to find time for me. And you say. Do you believe in the destiny?
This is the way it was meant to be. I gotta leave you to make you see. I'm over you. 'Cos if I stay
I'm number two anyway.
Chorus
* I can't believe it when my friends say.Take it easy, don't you worry about the rainy days. Like fire you can burn me, convert me. Like a bullet you can hurt me.
Maybe I'm blind. Forever young. Don't get me wrong. I don't belong here. Like a fire you can burn me. Like a bullet you can hurt me.
GET THIS SONG FROM SOME P2P SYSTEM! The name of the band is "The Rasmus" and they come from Finland. The name of this song is "Bullet".
This band and this song is something I can not explain. I feel good when I hear these words... Hope you do too.
>> "13$ a month is more than fair to watch tv on their own schedule, as opposed to having to sit down at prime time"
Gee, I've been doing that with my VCR since 1984.
and we are careful to give the credit to those engineers that build that code but we just don't modify any of it. I'm sure most companies benifiting from open source are using it in the same way we are. If we were in need of modifying some of the Open source packages it would most likley be a bug fix and everybody is into submitting bug fixes to the open source world. right? Besides it's so easy to just use OS packages call them or making objects that wrap OS code I can't imagine why you would want to actually cut and paste open source code into your closed source app. Maybe I'm just not malicious enough :)
I like things that are sweet and not things that are lame. --
It seems like an obvious thing to do to avoid paying $12 a month for data that is freely available anyway. People go out of their way to hack the XBox and Lexmark printer cartridges, and are outraged when the companies that make these products tell them they shouldn't do that. Why does TiVo get special treatment? They don't even release their source. They only release what they absolutely must under GPL, so I wouldn't consider them OSS friendly. They do a lot more taking than giving.
I said it in 1996, I'll say it again:
"Keep the tools open and free: Make your money from developing applications."
Mr. Butler and company have done well following this philosophy.
Great article too.
Everything in the Universe sucks: It's the law!
Tivo applies this mantra really well. They sell their hardware and their software with a very thin margin, and make their profit from the service. The modules thing seems to me like a detail, but whoever has the copyright of the kernel has the last world. As Linux and most kernel developers say it is OK for Tivo to do that, there is no problem.
Have you tried Internet Explorer on Wine? This site has a large list of instructions on how to get different "windows only" applications running with Wine (including IE).
I just had blazing success with Paltalk. The harder it is for you to use Linux in your niche, the more significant an accompolishment it will be when you are finally able to go 100% Windows free.
Best of luck!
Sdelat' Ameriku velikoy Snova!
At best I'll be modded as Offtopic, or at worst, Troll, but:
What is that icon supposed to depict? I know it's something related to these kinds of discussions, and so have sought out other Web pages dedicated to free software and the like in the hopes of finding a larger version of it so I can divine what it really is.
But for now, it looks like a turd having delusions of being a Viking, with tomatoes for feet, clutching a blanket a la Peanuts' Linus, and a gape something like that of the more clueless characters from Dilbert.
Those who can, do. Those who can't, write technology blogs.
The article gets some concepts profoundly wrong when it comes to discussing licensing (which is at the heart of the article). These items may confuse readers not already familiar with copyright law and the Free Software community.
Toward the bottom of the article "Public domain soft-ware [sic]" is mentioned and the "X Window System and BSD operating system" are cited as "notable" examples. Then the article mentions a "license limitation" that is only true for the old BSD license. This clearly illustrates the author is confused about what the public domain is and that works cannot be both licensed (as these examples are, under different but largely similar licenses) and in the public domain. Placing a work in the public domain is not a license, no matter how liberal the license's terms may be. Putting a work into the public domain is the irrevocable abdication of all copyright power over the work.
The terms "Linux" and "GNU/Linux" are used interchangeably, as if they both refer to the same thing (early in the article "Linux" is meant to refer to an operating system, later on "GNU/Linux" refers to an operating system). The GNU Project asks (and simple fairness requires) that we give GNU a fair share of the credit for their work in the GNU/Linux operating system. Technical precision requires us to distinguish between the Linux kernel and a GNU/Linux operating system. To these ends, the GNU Project publishes a FAQ on the issue of naming GNU/Linux, and an older essay.
Finally, just to be clear, the Open Source and Free Software movements are not the same. They have different philosophies, they began at different times, they were started by different people, and they speak to different audiences. The GNU Project's essay on the two movements and their social implications is helpful.
Digital Citizen
The GPL *IS* a contract. By taking a certain action (making a copy for distribution), you agree to its terms. At that point, it most assuredly is a binding contract between you and the copyright owners'.
The original poster is not entirely accurate either, simple "confusion" is not enough. Both the "confusion" and the counter-party's selective interpretation, must be both reasonable and equitable. Otherwise...
You get exactly: SCO.
Greetings Fellow "beneath your current threshold" Readers:
/., but according to this article: "SCO wants $32 for each embedded Linux device" on eeTimes:
Not that I do not read enough about SCO on
http://www.eetimes.com/story/OEG20030806S0025
"The $32 fee applies to any embedded system regardless of whether it is a Tivo set-top box which uses embedded Linux or some models of the Sharp Zaurus which also use that kernel."
and Nobody mentioned it here.
I was thinking about this too. Microsoft has already started edging towards TiVo's turf with its Windows Media Center (Sony has co-branded their own DVR that runs the Tivo software).
So the thing I'm wondering is: will we see Microsoft use the same tactics it used against Netscape in a "DVR War" with Tivo - resulting in the crash and burn of Tivo and a assertion of "superiority of closed source" by Microsoft? Only time will tell.
If next week's lunch money is $699, I think you could use a diet.
Well, it is $13/month versus your time. Your time to keep track of which show is on which tape, to rewind/FF to the beginning of the right show, to figure out how to tape over shows you watch and so forth. Your comment is like an really old-time PC user saying "why would I want a disk drive when I can save to cassette tape?" It is true you can save to tape, but disk drives are a lot more convenient.
Your choice.
Ok, so their business model is to sell the hardware at cost and make money on the service. First of all, this is the same buisness model as a ton of other industries (cell phones and video game consoles come to mind). Secondly, it makes sense since otherwise you would have to shell out a ton for the hardware, which would discourage people from buying it, especially if they aren't sure if they like it, and because the product is somewhat useless without the service, which allows for easy taping of shows via current show listings.
I have blog like everyone else
SCO keeps saying kernel 2.4 - TiVo uses kernel 2.2
Yes, we did get hardware from VA Linux lo these many years ago. Decent hardware, decent prices, convenient availability, etc. They did include and have configured the requisite drivers for their specific hardware in their "distributions." They had hardware support for the weirdo (at the time) high performance disk arrays and things we wanted to run.
Also, as they crashed and burned, didn't they mutate from a hardware supplier to some kind of software supplier? I don't recall that part of their history, since by then we were back to custom PC hardware running, as Jim said, mostly RedHat derivative distributions.
To give you an idea of how long ago that was, I think PIII-550s in a 6U rack were the cutting edge back then. They had these cool-o blue LEDs.
Sure, but you have to realize there are many methods of working around the GPL and LGPL licenses. Dynamically linking code at run-time etc.
I used to work for a company that made a "closed source" open source product based off of linux. I will not say which one, but trust me, the idea is this: "Release any unworthy crappy code back to the open source community to keep them quiet and make sure they don't think we are hiding anything, and everything else under the sun, dynamically link or do whatever you have to do so we don't have to show the world shit!".
That is the way of the warrior.
- Vawskel!
Modesty is one of life's greatest attributes
Please don't do that, it hurts everyone. Sure Mozilla is better than IE, what isn't? The people who made that silly IE only site argued that "everyone uses IE anyway". By changing your user agent, you help convince them that it's true.
If you absolutly must have something that a company wants to share, but has such a site, pick up the phone. Chances are they don't know they are creating a problem for customers. Once they know, they can turn on the dummy that set them up. If they say something stupid like, "just go get IE," you don't want what they are selling anyway. Banks, government agencies have all moved to public standards. They did this because they realized that the Microsoft jerk around never ended and every time M$ jerked, 1/2 of their customers could not get what they needed.
Friends don't help friends install M$ junk.
How does piracy come into it?
Thank you. It's blindingly obvious in hindsight. I appreciate the time you took to explain that.
********* sig: If you don't like the law, get filthy stinking rich, and buy a better one.
here in the UK. Sky is plugging their Sky+ box like mad, it costs the same per month to subscribe as my TiVO and yet it can only record 'some' series, has only 20 hours of capacity with no chance of hacking it, and reports from owners I have spoken to show that it is very unreliable. Nor does it have wishlists, suggestions and all the other cools stuff that TiVO offers.
I wish Sky had chosen to go with TiVO for their box, and I wish others would do the same. Why must they always create their own poor imitation? Is it to be able to be closed source? Do they fear that going with TiVO would somehow result in GPL taint?
Sadly today you can't buy a new TiVO in the UK but the service continues, why wouldn't it? Money for old rope once you have a user base.
"I have the attention span of a strobe lit goldfish, please get to the point quickly!"
I think that Tivo is missing an important benefit of the open-source development model. If they were to make their own source available to developers, they could benefit from substantial improvements to their system. For instance, I would love to see Tivo's program guide tied in with a rating system like IMDB, or for someone to improve their "Smart Recording" system to capture more than just idiotic sit-coms (e.g. how hard can it be to notice that I only watch IFC and Sundance?). It seems to me that Tivo could open up their code without letting the cat out of the bag w.r.t. their service model. (I mean, the Tivo hackers already know how to enable the lifetime subscription mechanism -- but how many everyday users are able to figure out how to install it?) Perhaps they could develop an emulator for external people to prototype improvements.
First, you should consider posting with an account (even one tied to a throwaway e-mail address, if you wish to preserve your anonymity in that way). Slashdot makes it very easy to skip over most anonymously posted articles, such as yours.
Second, I can find no source to substantiate your claim and you have not posted any. On the contrary, I can find information where RMS (which is who I'm guessing "he" refers to) supports the switch of some of the Ogg Vorbis code to a new BSD-like license (this also appears pertinant).
Digital Citizen