Whereas CS4 supported a range of video chipsets from both Nvidia and ATI, the new Mercury Playback Engine was programmed to work exclusively with Nvidia's CUDA technology. Like its CS4 predecessor, Premiere Pro CS5 supports hardware acceleration (which can energize effects processing even more), but there's an even touchier caveat here. Alternately, if you're using a 32-bit version of Windows and purchased a copy of CS5 Master Collection of CS5 Production Premium, Adobe includes a copy of Premiere Pro CS4, which is compatible with 32-bit systems. If you're one of that underpowered minority looking to dive into Premiere Pro CS5, you'll need to factor a new system (or at least a thorough upgrade of certain components) into the purchase price. Given the prevalence of 64-bit systems in recent years, that's quite believable. Adobe claims to have conducted research and discovered that very few existing customers would be affected. You're using a computer with a 32-bit CPU or operating system, however, your system will be unable to run Premiere Pro CS5. The revamp also means that you can do real-time HD chroma keying with the included Ultra keyer, which is optimized to tackle real-world green screen conditions, and capable of complex keys on smoke, liquids, and transparent objects.
Because most of the tasks in Premiere can take a long time (especially if you're adding lots of effects or rendering a long movie) this alone can be a tremendous time-saver. The improved performance comes courtesy of Adobe's Mercury Playback Engine, which was devised for CS5 from the ground up to take advantage of 64-bit processors. Get breakthrough performance on workstations and laptops streamline collaboration and boost productivity with an efficient, robust, cross-platform editing workflow. Adobe Premiere Pro CS5 software lets you edit faster with true native format support.
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