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"The battle over Flash and its role (or lack thereof) on the iPhone came to a head today when Apple CEO Steve Jobs published an open letter explaining why his company won't support Flash on the iPhone, iPod touch and iPad. \nAdobe CEO Shantanu Narayen spoke with The Wall Street Journal to deliver his response. Unsurprisingly, the arguments from both parties are self-serving in parts and gloss over some realities.\nIt's time to cut through the BS and, in turn, determine what the Apple-Adobe feud means for consumers and developers. \nH.264 Rules Web Video, Not Flash\nFor most end-users, the debate over Flash is largely a debate about web video. Yes, Flash is used in other ways \u2014 for web-based games and ever-decreasingly in website design \u2014 but thanks in large part to YouTube, Flash is most commonly associated with web video.\nIn his letter, Steve Jobs highlights a point that I have made myself on many occasions: Web video is overwhelmingly encoded in H.264. Not only is the H.264 codec the default encoding setting for practically every video service online, it is also by and large the default codec for raw video from digital video cameras. That means that if you upload video from your Flip camera directly to YouTube, it doesn't have to convert that video into a new format, which requires more time and resources.\nAdobe started to support H.264 back in 2007, essentially buying Flash time as a video container without forcing video services like YouTube to transcode the native H.264 video into something else that Flash could use. \nHTML5 Is the Best Way to Deliver Video on Mobile\nThe problem for Flash isn't that it can't adapt to contain other types of video; it is that software and hardware, particularly on the mobile side, have moved in a direction that natively supports the playback of H.264 content. Why bother using a container if you can play the file natively and get the memory advantages of not having a container plus hardware optimization?\nEven on devices that support Flash Lite, the video experience is almost always optimized for H.264. HTML5 just makes the process easier to integrate across multiple platforms. While the proprietary and licensed nature of H.264 has turned some browser makers away from supporting H.264 in the HTML5 video standard (Mozilla and Opera are the most vocal opponents), mobile devices that already have it licensed by hardware vendors are going to use the technology. The quality, player experience and even live stream and ad insertion abilities of HTML5 are expanding all the time as well.\n\n\n\n\nLook at the Sublime Player demo from Jilion for a great example of what can be done with HTML5 and web video. SublimeVideo is working on a solution that will serve HTML5 video by default in mobile browsers, Safari, Google Chrome and Internet Explorer 9, and serve Flash video by default in browsers such as Firefox and Opera.\nThe fact that so many web video providers are working to embrace HTML5 isn't because Apple doesn't support Flash, but because it is the best way to deliver video to all smartphone users. With or without Apple, the shift to native playback is where web video is headed. \nFlash Hasn't Proven Itself on Mobile\nEven if you completely disagree with Apple's position on Flash, the reality is this: Flash has not proven itself on mobile platforms. Specialized systems like Popbox, the new TiVo Premiere and some other embedded iTV systems aside, as a technology Flash has existed almost solely in the desktop browser.\nFlash 10.1 is supposed to be the first version of Flash that will actually ship on a number of mobile phones in a way that is more than just Flash Lite. Flash Lite, which is the current implementation that some Windows Mobile and Android phones support, is not a great experience. It doesn't have hardware acceleration and is limited in terms of what types of content it can support.\nAdobe claims that Flash will be shipping on supported devices later this summer, but at this point, I'll believe it when I see it.  It also looks like the minimum requirements are going to be the equivalent of what the Nexus One offers, meaning it will only be available on the high end of the smartphone market, not the mid or low-end.  The promise of Flash on mobile devices has been long in the making, but aside from demonstrations, it hasn't happened.\nFlash on Mobile Has Issues\nEven on hardware that is supposed to support Flash, Flash is often not included. For instance, when Firefox Mobile was released for the Nokia N900, Flash support was removed at the last minute. Why? Because it wasn't a good experience.\nEven on Intel's Atom platform, Flash has issues. This is why playing back fullscreen Hulu or HD YouTube clips is often painful on a netbook (even an ION or Tegra netbook). Again, Flash 10.1 is supposed to bring hardware acceleration that will make those types of processors handle video in more robust ways, but frankly, when there are still longstanding issues with Flash on x86 computers, how can we expect the transition to mobile to be problem free?\nThis isn't to say Flash couldn't become a killer, hardware optimized superb mobile platform \u2014 but at this stage, everything that Flash is so good at doing on the desktop isn't happening with Flash on mobile devices. Rather than defend Flash's performance on mobile devices with words, I'd much rather have Adobe actually release working products that show off why the technology can work well across platforms, including mobile.\nOne Size Never Fits All\nIt's nice to get caught up in the fantasy of building an application that can be deployed on any type of device and work the same way across the board. Sun Microsystems called this \"write once, run anywhere,\" and it was the defacto slogan for Java. However, as anyone who has ever actually written for Java knows, the differences in Java virtual machines (JVM) means that that in practice, it can often take more time to try to debug a solution and get it working on another platform than it would to just write it natively for that platform.\nWeb applications are actually the closest example of \"write once, run anywhere\" actually working. Even then, browsers still need to be optimized for specific platforms in order to run applications built using web languages. This is one reason why native application building for smartphones has become so popular: native applications usually offer a better experience than simply using the web.\nIt's fine to aspire for solutions that will work well across a variety of platforms, but users need to continue to be aware of the technological realities that prevent that from happening. If nothing else, the Apple-Adobe debate highlights that computer software \u2014 web based or otherwise \u2014 is not one size fits all.\n\nFor more technology coverage, follow Mashable Tech on Twitter or become a fan on Facebook\n\n"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2010/04/29/apple-flash-html5/>