---
title: WWDC2003 Session 717
framework: wwdc
role: article
path: wwdc/wwdc2003-717
---

# WWDC2003 Session 717

## Transcript

Kind: captions Language: en welcome to 3gpp myths vs. reality this is session 717 my name is ELISA Hutchison I'm the QuickTime product manager in the QuickTime product marketing group and I'm joined up here by David singer who is an architect in our quick time engineering group we're both actually going to do the session today so I'm your host and a speaker along with Dave we'd like to take general questions at the end of the session but we're happy to take some clarifying questions throughout the session as we go so let's get started so hopefully many of you are able to attend our quick time State of the Union yesterday with Frank Casanova the director of QuickTime product marketing and Tim shaft is VP of our interactive media group we're going to build upon a lot of the items they talked about in that session if you are able to attend if you weren't able to attend that session we would like to introduce you to mobile multimedia we'd like to go into a lot of detail about the standard and that we'd also also like to talk about quick times support for the mobile multimedia standard which is 3gpp but before we actually get into a lot of detail about mobile multimedia standards I'd like to spend a little bit of time talking about standards in the telecommunications industry so if you look at cellular standards today I like to say they're sort of all over the map for those of us that aren't really familiar with them and this chart is intentionally hard to read I don't expect you to be able to pick out each little country and say I understand what standards they're using the radio network standards generally fall into two categories there's sort of a cdma family of technologies for the radio networks and then there is a gsm technology family and what you can see here is that distribute across all geographies some countries tend to be towards one so europe has adopted predominantly the gsm family of technologies then you'll see countries in Asia that have primarily adopted the cdma family of technologies and then you'll see a mixture of both and that's what we have here in the United States but all of these technologies have evolved over and we talk about them in terms of generations so the first generation technology started with both cdma and gsm and I've also put on here a column for tdma which was a first generation technology that was developed here in United States by 18 p but as you progress up to the 2g technologies you're actually talking about not just voice but adding a data layer for the radio networks and those have some different acronyms that you've heard about before like GPRS for example and that's where the GSM and PMA technologies actually came together under that GSM family of technologies as we go oh and I went the wrong way as we progress forward you'll see that with the two dot five and 3d technologies there's a whole other another set of words that people use to talk about the technology so you progress into what's called cdma2000 with different one x versions then you also progress into what's called UMTS technologies and a similar technology that's built on top of that in Japan which is called wcdma so we don't want to spend a lot of time on these particular technologies the idea here is there are really two families of generation technologies as you move up in your data speeds and they exist in different places across the world when you talk about speeds you're probably talking in the 2g somewhere around 9600 214 dot for kilobits per second as you go to the two dot five technologies you're looking more like 28 8 and this varies and then as you start with 3g the definition of 3g technologies is to start with data rates of about 144 kilobits per second progressing all the way up to forecasted speeds between 1 & 2 megabits megabytes per second get it again sorry about that so what is 3g i mean 3d is 3g is the foundation that you hear about all the time it's what you think you need to have for mobile multimedia so let's just break it down a little bit so that we understand some basics first of all three to have a 3g technology that bandwidth needs to be licensed by carriers so the carrier's bought the bandwidth then they had to build the high-speed packet switch radio networks when those things are in place then you can have rich multimedia services that you can view these services through these multimedia devices that are now some some of them are now in the market today but all of this has been surrounded by a lot of hype we've been hearing about 3g for a long time and so of course that's produced a fair I'm sorry the quicker we use a clicker which way do I go on the quicker roll all right so this is produced a fair bit of skepticism so you know just when you've heard about something you've heard about in her about you don't see it immediately there's a lot of people that don't really think that this was going to work so you've read things I'm sure that says the operators that purchase video that these bandwidth they're they're destined for bankruptcy and you know it's 3g just another internet disaster and those are some of the myths that we wanted to talk about today and then really talk about the reality of some of those statements so the realities are that all of these services that can deliver mobile multimedia don't actually rely on complete Network build out of 3g if you will so for instance a lot of mobile multimedia can be downloaded just fine or messaging services are working just perfectly on 2g and to dot 5g networks that we even have today with GPRS with some of the major cities is totally in the United States wow that's a lot louder okay then the other thing we wanted to talk about it said not every every carrier went bankrupt so yes of course there were highly publicized auctions for some of this bandwidth where people paid lots and lots of money but not all countries paid tons of money and not all carriers bought their competitors to get into this space so not everyone went bankrupt and finally we believe and other people believe that the services will lead the network build-outs just as it did with Internet technologies where we were all just perfectly satisfied to dial up on our modems to view the internet and see how that works but because we found really valuable services to go and look at on the internet the the public actually created a demand for higher speed networks and now we all have access to things like dsl and cable for broader bandwidth connections and we believe the same thing will happen with the 3g technologies as they progress all right okay and some other does is a reality here I put a couple close up in a couple of statistics but they are a very positive industry analysts reports about the rollout of 3G networks and also the business that there is there truly is in in 3G mobile multimedia so you see numbers from IDC forecasts of a 30 billion dollar industry by 2006 so there's a real forecasted industry here and there are real rollouts happening right now of this service that make it a reality for you as developers now i'm going to hand it over to Dave singer to talk about how this is really relevant for QuickTime thicker so we talked about the those parts of the network that the operators have produced and what we're concerned of course about in multimedia is things like video playback video recording and being able to get content on and off those phone I'm being able to send a message and multimedia message to a phone and maybe being able to load content of a web server on to a phone and it's worth noticing but of those and all those need just a handset and the service they don't actually rely on reliable high-speed bandwidth so if you send a message or you do a download over a 2g or two and a half gene work instead of three well it's a little slower but you still get it the only service we actually need that full network build out and a reliable one of that is it course streaming so it's one of the reasons we expect to see streaming lagging these other services if the operators have to both build out and get confidence with their networks before they can deploy the streaming services so I'm going to talk a little bit about where the Sounders come from and what's in them there are two major bodies developing standards for the 3g world there's 3gpp and 3gpp2 imaginative the name pair of bodies 3gpp stands for third generation partnership project it's actually a partnership of quite a lot of standards bodies from all over the world and they're building on the GSM heritage of cell phone standards and then 3gpp2 is building on the CDMA the cdma2000 heritage of earth standards the 3gpp designed to provide a really high speed network so that you can get interesting multimedia content to devices and do all sorts of fascinating higher value and interpreting services it's being adopted by a whole bunch of companies all over the world so what we've got here is a variety of companies from handset manufacturers operators infrastructure makers and computer people like ourselves so there's a lot of supports behind this standard all over the place I'm going to go a little into what is in the multimedia part of the 3g spec 3gpp standards obviously cover everything from the radio network and how you do modulation all the way through to the final services that you present to the user in quick time of course oh I'm interested I'm curious about the radio network what we really care about is the multimedia services so I'm going to focus in on that and in that will find that there's a package including speech codecs general audio or music codecs video codecs there's a container file format into which you can put those and then above that container file format there are delivery frameworks such as smile 20 they synchronize media integration language there's MIDI music still images and so on that you can place into messages and in to smile at overlays in terms of speech codecs the primary speech codec used in 3g multimedia in the 3gpp world is a mr adaptive multi-rate codec this is the codec that the telephone itself uses when it's making a phone call it's adaptive because the 3g networks can vary its bandwidth and when it's being used in a telephony context the product can then adapt to the available bandwidth so this getting from the network this means of course in QuickTime or in multimedia terms we can treat it as a variable rate codec it is a classic 8 kilohertz sampling rate telephony cold air kit so you know a Celt based codec so it is optimized for handling speech it will handle all the content but like you've tried i'm sure you've tried the pure voice codec some of you in the QuickTime walls on general content you'll know that speech codecs are not the best codec for handling music it's adaptive and then it switches between various modes and in those modes you'll actually recognize some historic codecs that you'll Reno and life such as the GSM full and half rate codecs and so on in the stable is also a higher sampling rate richer sounding wideband codec that's optional and the spec I haven't seen it much of it happening at the moment on in the 3g world but there is a khodet waiting in the wings out if you want to do higher-quality speech and those two can be packed in their own file format there's a dot AMR file format which you can use and a lot of the phone support that for recording voice notes or parts of calls in progress if you have a phone that allow you to record in general audio terms were really lucky we have been leading the world leading AAC codec this is probably the best music codec out there recently actually there was a listening test on the internet I don't know whether you heard and the one that you've got in QuickTime actually came out tops in the listening test of between the AAC codecs available so you not only have the world's leading codec we do have a world-leading implementation of a world-leading codec what is the 3g spec is the same simple version of mpeg-4 AAC that we're using that's used in itunes onion visas of use in digital radio mondiale and so on so you'll find AAC is getting deployed quite widely across a whole variety of services not just 3g so this is a definitely a forward-looking codec from the 3g group when their doctor did a few years ago in video codecs there's a couple of choices in the sec the basic manda free codec is h.263 i'm going to give you profile and level numbers for those of you who are curious i'm not going to explain the features of a profile because i can never remember I always have to look it up myself so the basic profile 0 level 10 is a basic h.263 codec no fancy options and so on level 3 profiles really sorry is permissible in the spec but it's not mandated and then also available in the spec is mpeg-4 video and you'll find some of the cell phones but not all implementing mpeg-4 as well also in the 3g spec I didn't show this in the overview slide that support for timed text and actually if you look at the specification you're going to go all that's awfully familiar that looks like QuickTime time text and that was because I wrote it and I'm lazy the the the 3g spec however is improved in quite a number of areas it's simpler than the QuickTime specification in that we allow only iframes only key frames as it were there's no difference frames and it's modernized compared to the quick to our implementation so it's based on Unicode instead of Macintosh character coding and it allows vertical writing and so on you get full out for controls for both your foreground and background colors so in some sense is it's more powerful and more complicated but in many respects it's simpler this allows you to do subtitling credits karaoke michael links and so on and it's currently deployed in docomo service and home sets all those that i just talked about the speech codec the video codecs the general audio codec they can be wrapped in the cut in the 3g multimedia file format which in turn was based on the mpeg-4 file format which we know and love which of course was based on the QuickTime file format so if you were to open one of these 3g files you go I recognize that it's got to move at a minute and you'd be right so also in the 3g files over there is the intrinsic file type atom which was introduced by the jpeg 2000 standards and that allows you to mark a file of saying which standards do I think this file complies to or in particular what readers that implement particular standard should be allowed to play this file so you can say i want this far to be playable both by an mpeg-4 player and by 3gp player by carefully marking the way you build this this atom in the file so there's intrinsic typing in the file as well as extrinsic from its name or its mime type the 3gpp2 standards also uses the same file format which is kind of convenient to you but they move use of course their own suite of codecs so their voice codec is one of them as they have several is the pure voice codec that's already in good time that you're familiar with they chose layer 3 audio rather than AAC for their general audio because of its deployment rather than forward-looking but as I say the same file format and it's worth looking just for a moment at the evolution of the file format so way back in the midst of time when some of us were still sitting in our high chairs and eating soft food and the QuickTime file format was written in 1990 actually and standish tin 1991 with the first ship of QuickTime and that was successfully used by the QuickTime group alone for quite a number of years until mpeg-4 finally decided they were you ought to have a standard file format they never had for mp1 and 2 and so the MPX for file format was derived from quicktime in the late 90s well that triggered the whole flurry of activity around the multimedia industry the motion jpeg group and the 3g group both looked at that and said you know we could we could use that file format if we just change the media types in there just in the way the quicktime has in the past and so we built motion jpeg 2000 and the 3g spec derived in a rather awkward way from the mpeg-4 spec because the mpeg-4 speck said of course that you had to use mpeg-4 coding standards and these people wanted to use something different well the committee eventually decided that this was a mess and that we really wanted a single file format again so they said why don't you guys get together and define a base that doesn't talk about any of these coding standards that tells us how to structure a file that we're calling the ISO media file format and that really is the direct inheritor of the QuickTime one because it's an abstract container and on top of that we can now put and pick for again mpeg-4 version 2 and motion jpeg version to a rehosted as it were in the ISO media file format and that of course allows other groups go to 3gpp and 3gpp2 to do the same so this ISO file format this family is really becoming the de facto standard for multimedia containers in the industry everybody is using it a verra fact there are other bodies here that I ran out of space to put little bubble so I didn't put them on this diagram but for instance the SD video card Association is also using this file format for their standards for multimedia on it video cards so where are these standards how they doing the standards themselves are mature and published so for example if you were to look at in the 3gpp world at the specification with the wonderfully mnemonic 26 two three four you would find the specification for multimedia container file and packet switch to streaming and in turn and multimedia and so on the format's under protocols are specified and published and that includes specifications for messaging email like operations download HTTP web like operations streaming and so on but today I think you're going to see more downloading and messaging than streaming because the operators need to build up those high speed networks we need to get confident about them and you need to be able to afford to pay for the bandwidth which it tends to be a little difficult when they're doing their initial deployment because they're charging a lot of money for bandwidth so you'll see streaming coming but you're going to see these are the download method formats leading the streaming standard by little way an interesting one coming up in the standards committee if you care is that they're actually working on one too many transmissions so we can actually do multicast streaming at some point in the future we hope so how do you get data on and off your phone this is a question we get asked quite often them what we draw a new here is a complicated diagram which like goal is in three parts at the top of the diagram your local area your office your home or whatever on your right the cellular network and on the left the Internet so one obviously you can get content on on off the phone of course is locally you may be able to use Bluetooth infrared a USB cable a memory card and so on to move content from your personal computer to inform your phone once you've got content on your phone of course you may be able to send it as a multimedia message and like an email to another person on the cellular network if your carrier supports it so that's the the diagram over over there are we here also that seem multimedia message you maybe just generate one from your phone here and send it through a gateway to an email address to somebody or out on the internet again so there are gateways being built that will do conversion of multimedia messages to email and indeed don't do it the other way sometimes if you're lucky again depending on your operator you can sometimes be generated email over on your on your computer here and have you come through the Gateway and end up as a multimedia message on somebody's cell phone similarly there are web browsers and the ability to use HTTP on some of these cell phones and they can load content either through a gateway or off the Opera operators hosted Network off a web server so you may be able to put content in some suitable way onto an HTTP server and then access it both from your laptop machine and from from your cell phone so you actually have quite a way of working with your cell phone with other people's cell phones and as I say you're going to have to talk to your operator about what is possible in each of those environments so with that I'm going to turn it over to ELISA who's going to introduce you to all the exciting work engineering group it did in 63 so the natural progression of defining a standard hopefully is there will be peculiar and Apple was very pleased to announce in early June the release of QuickTime 63 which provides support for the 3gpp standard with native support for AC and AMR mpeg-4 h.264 video 3d text and the 3gp file format where this puts QuickTime is that now we have the first widely distributed 3gpp player for the desktop we have the first low-cost 3gpp authoring tool and we are the tool of choice for the world's first standards-based 3g network service with NTT DoCoMo's mobile mp4 I'm ocean service so what does it actually mean Dave talks through some sort of theoretical examples about how data could be moved back and forth but what's actually happening now well as an example we've been working with docomo where their content created a professional content creators are using QuickTime to create content that then is distributed over their network to their mobile phones and this for example is one of NTT DoCoMo's phones for I motion that supports 3gpp playback another example is that users that have one of these i motion phones or any 3gpp Club capable phone can capture content on their phone through the video camera it can then be distributed through the network either now to the desktop using a QuickTime Player or of course to another phone the evolution of this will be that users can also just create content on their desktop that can then be mailed over to over the network to a phone for viewings so the thing that's very exciting about this is not only is QuickTime the first mainstream 3gpp authoring and playback tool but all of the applications that QuickTime supports also now become instantly available to create mobile media content so you see of course final cut pro 4 on here which now can create 3gpp content and a host of other applications that are built on our SDK in addition to the ones that Apple has like iMovie for example now can all create and pick for in 3gpp content so what does this mean for you well hopefully what we've what this means for you is that we've opened up with this new launch of QuickTime a whole new market for you to create tools for and there are new customers that we've never talked to before and that maybe you've never had a chance to create products for the customers now our operators these are mobile operators that need tools for content for editing and for management they also we also have new content owners that want to get content onto mobile phones that maybe not have not used a quicktime based tools before and in addition we have a whole bunch of end users that have lots of content so they want to simply and easily create for mobile phone usage and where are the real opportunities what we've been talking about Japan and often people into Asia to see what's happening in the telecommunications market but there are real strong predictions for the revenue value there with mobile media services and we've been talking about some examples NTT DoCoMo and Jay phone both have 3gpp compliant handsets joke emma has rolled out a full 3g network and json is moving very quickly to roll out their network as well when you look at Europe they also have a variety of 3gpp handsets that are available right now this for example is the sony air p 800 which comes with a native 3gpp player on it there has also been 3g launches by Hutchison in the UK Sweden Italy Austria which is an honor and Australia which isn't in Europe but close that was my bad and finally there are opportunities right here in the US so you can buy a 30 Nokia 3650 today from several of these operators up here I imagine that they'll soon be shipping some of these other mobile mobile multimedia handsets as well with varying services and coverage as we progress sort of in the same style as the Japanese market and the European market so an investment in 3g is an investment in these ongoing greater and greater bandwidth telecommunication technologies and Dave promises me that there's something called 4G well their variety of companies doing things the labeling 4G is not actually terribly well defined in the Indus or it may be variously defined well by various people and your thing a variety of companies that are deploying high-speed what data oriented networks from the traditional cell phone networks with some at least heritage from the editor 11 family in terms of how they do radio network management and so as i say more data oriented but they're trying to get a reach much more like cellular network so it's kind of a hybrid approach obviously 802 11 Airport you've seen how many base stations we've had to put the coverage of this building there's no way you're going to build out a national infrastructure or something with a reach that of that kind they have a very different cost and deployment model so these are very different these are not typically the traditional telephony operators or traditional telephony cost models and deployment as I say the more data centric and the traditional cell phone networks in general I think this is good news for those of us in the multimedia community as I say it doesn't really matter to us whether you're using licensed bandwidth for unlicensed and works as long as we can get the bits on to the devices so my belief is that we're going to see a whole mishmash of services that you'll be able to get a very high speeds on 802 11 a medium speeds maybe on some of these 4G networks if you're lucky and they're deployed in your area and quite decent network great for the 3g works again if you're lucky and you live in Japan or they happen to get deployed in your area so you're going to see these things coming along but from the meantime the the big operators are rolling out 3g and particularly multimedia in across very large areas obviously entire countries or continent so at this point what I'd like to do is give you a demonstration of using a QuickTime multimedia and cellular phone and I'm going to choose an application here that's done absolutely nothing to warrant being in this presentation and that they've done nothing special to support QuickTime 3g at all the application actually is one that's worth knowing about in the first place and it's called I view media pro and this application is designed for cataloguing and managing media assets it has lots and lots of features I'm not going to go into it I'm not supposed to be advertising it here it allows you to do version control the thorn and here I've taken a seminar that Frank and his team did and split it up into short clips and so for example here's a clip phone where he's talking about 3gpp other Jerry Sanders well Frank shank on it and and if we look through the seminar we can find also the clips when his Rhonda and so on and Frank introducing stream on your game you can even just check the clip right there in the in this window if you want to this program actually uses QuickTime to cattle to help it so with it katalogi and have a lot of functionality built in as well don't get me wrong but they're using QuickTime here to play back these clips and they also as it happens then use a the quicktime api's to the hilt and that's why i'm demonstrating them so i'm going to choose a couple of those the two that i just showed you and i'm going to ask it well why don't you convert those movie files and what they do is they scan to see what QuickTime exporters are available and they offer them so this application i have to say again was written and this version shipped before we shipped our 3g support but man it just works this is good application programming and i encourage you if you're an application developers to do as well as this so i'm going to choose export to 3gpp and here we can bring up the settings so care the choices we offer you our tour to important 3gpp releases and where they allow different services and the ntt docomo zone this magnitude release five dot one here again as I say you can choose h.263 I'm take 4 i'm going to pick h.263 because i'm going to create content that i want to be widely applicable for lots and lots and lots of phones and that's the mandatory codec 176 x 144 that's a good size I don't want it to be seen smaller than that and let's hope the phones of that big and in this case i'm running a seminar so i'm going to let it be speech content and in this particular case we didn't have a text track pick the data rates you've seen this kind of interaction with our mpeg-4 export dialog we can pick a data race and the keyframes and so on and in speech i'm going to let it use all the bits at cannock so it's not as if a speech codec uses a lot of the channel even when you allow it to really crank and it's a mono content and as I say there is no text track and here we could set up to restrict distribution if we were going to aunt Edie Giacomo service but we're not here and I don't need the Center for streaming we will hint it for streaming but in this case I don't need to so that sets the options i'm going to choose a folder here to put them in 3gp file sounds like a great folder name when I click Choose it runs the export operation on all the files I chose so here it is cranking through this is actually transcoding from a pic 42 h.263 so it's taking a little longer than if i started with base content and if we look we find we've got a couple of 3g files in that folder now the other cool thing about this application is that they really did their homework when they give them the file if they don't recognize it themselves they say the QuickTime hey could you do something with this file and if the answer is yes then they will they allow you to catalog is as well so actually you can catalog the content that came off your phone or you've actually coded ready for your phone so here again is the same click but now cloak toted ready to go out to a fun third generation partnership project yep and here we are stumbling on the phone so at this point what we could do is take those and transfer them to a phone so here we have the Eclipse i'm going to pick one of them i have here plugged in you can just see it flashing blue if you've got really really really good eyesight this is a bluetooth adapter that i've plugged into the machine that somewhere way down here and so we've got bluetooth on this on this machine and so if i drag this on top of the bluetooth file exchange then it comes up and it says well how about Frank's 3650 I happen to remember this one so i didn't have to search for it i have Frank's 3650 here I stole it from him yesterday and when we click send it's going to say are you sure this phone likes this kind of file I can say yes I'm sure and the phone goes them beep and says do you want to receive this message and I say yes and you'll see the progress bar goes and the phone and the progress bar goes and and the progress bar there's nothing like working in a noisy radio environment to watch progress bars is there come on here it goes and then when it finishes downloading and this went like anything but before all you guys came into this room this is very cool this is using a Bluetooth service substandard bluetooth file exchange service which both we so the phone beeps I say show and it comes up and holy cow is the real one player and yes so here we see wonderful interoperability I can constantly claim we didn't write the player on this phone you saw somebody else's logo this is what it's all about we're interoperating on a public standard and as a result we've got a wonderful wealth or opportunity somebody else wrote the fight the player on the sony ericsson p800 somebody else to gain wrote it from the doc mobile phone and we're playing on all of them this is why you've got a nice big sandbox to play in now you've got lots of opportunity to go out there and create interesting content [Applause] so having got you all excited about this stuff where can you go for more information let me go through some of that so obviously the first place you're going to go to is quick times on website and you're going to find out about our mpeg4 and 3gpp support which you can find at apple.com / mp4 / 3gpp don't try and say that out loud yourselves 3gpp specifications good news here the public bad news of course 3gpp defined specifications for everything from radio modulation through all the numerous interfaces in the network and you could learn how to build your own cell phone network if you read all those specifications which means there's a lot of them but they are public you can find them at 3gpp org their website there you'll find for instance the mr codec and file form codec specified the file format is actually specified by the IETF believe it or not you shouldn't need to read about the mr codec we've done that hard work for you we've got it implemented but the 3g file format in the multimedia services you might want to look at and as i said before you might want to pull down to six two three four if you're really curious about the details of what you can do in terms of some codecs and so on and i'd suggest you look at release five if you're intending to go there and take four specifications I'm not public however there you can buy them publicly by going to the ISO website WWF o th ph because they're in switzerland mpeg-4 is the one for 496 family of specifications currently up to part 12 which is the multimedia file format the iso file format part 12 and i think they've actually hit 14 or 15 at the moment but the part you're curious about probably is part one systems and maybe the audio part where you'll find the specification for air you see if you're curious itu specifications you can get from the ITU believe it or not they're an international treaty body so they actually have an int domain name there w wi tu int and that's where you'll find h.263 if you're curious though you've had h.264 in quick time since I can remember there are related technologies if you're excited about cellular telephony and what you can do with that and your max and your Mac os10 obviously you should know that I think and I encourage you to learn about it there isn't a developer session this week because it's a user not a developer technology but this allows you today to sync up your contacts in your calendar really easily use this Bluetooth and other means of communication with the phone but bluetooth is the one that works beautifully course and bluetooth allows you as a developer to do all sorts of fun things not only with you were here last night but last night the salmon clicker actually won best of show for the Mac os10 design award and that's the program that runs cooperatively between your Mac and a cell phone that has bluetooth that allows you to control anything at all on a Mac os10 you can Apple script which is very cool and he did that because he knew how to use bluetooth so that was a great piece of software you should get up on top of the Bluetooth technology if you don't know about it and you're a software developer with that I'm going to tell you about the other sessions coming up today don't stay in this room it's going to be dreadfully boring they're going to tell you all about how to administer a server for heaven's sake instead we have lined up for you a swedish chef who's going to tell you how to cook tout content for your own cell phones back in the room around the other side but after that you should stay in there and listen to these advanced quicktime interactivity just to have some fun the session that was going to be in here Wi-Fi 3g has unfortunately had to be canceled so don't come back here for that session because it won't be happening tomorrow however there's lots of fascinating quicktime sessions come to the QuickTime feedback forum of course at three-thirty and tell us what you think about quicktime on what we ought to be doing or what we did wrong or what we did tell us what we did right sometimes ok and I'll Friday there's the final quicktime sessions if you have developer questions about quicktime technologies then obviously Guillermo is your man quicktime man at apple com and if he's not your man he's really nice heel forward you to the right person ok so if you've got any questions and after the show and that's the only email address you remember don't worry he'll put you in contact with us and then of course developer general developer information that Apple is in the usual places on the apple website don't miss the labs happening this week if you're a Content developer if you're an application developer if you're guarding developer hey and you've got something to do with QuickTime come to us talk to us in the lab without your pro about what you're interested in about what you want to do about things that you're not quite sure about and will help sort you out laughs happening all week and if the right expedition in the room they'll try and trace them down okay so this is your great opportunity to get in front of QuickTime engineers and finally put down marketing people indeed even in front of QuickTime lawyers if you have a question about that aspect of our operation and they will try and answer your question