Adobe 65021048 User Guide - Page 429

ADOBE PREMIERE PRO CS3 423 User Guide the audio breaks up when playing, the interleave value may be causing the computer to process audio more frequently than it can handle. Increasing the value lets Adobe Premiere Pro store longer audio segments that need to be processed less often, but higher interleave values require more RAM. Most current hard disks operate best with a 1/2- to 1-second interleave value. Adobe Media Encoder format options When you export using the Adobe Media Encoder, you select a format in the Export Settings dialog box for your output. The format you select determines which Preset options are available. Select the format best suited for your output goal. In Adobe Premiere Pro, format options include: MPEG1 (Windows only) A set of standards defined by the Motion Picture Experts Group (MPEG) designed to deliver video and associated audio at bit rates around 1.5 Mbps. Generally, MPEG1 movies are suitable for delivery formats such as CD-ROM and as progressively downloadable files on the web. MPEG1-VCD (Windows only) A variant of the MPEG-1 standard designed for Video Compact Disc (VCD). VCD is a cheaper, more accessible but lower quality alternative to DVD. VCDs use standard recordable CD media, and can be played in a standard CD-ROM drive. The format provides an image quality comparable to VHS video. MPEG2 One of a set of standards defined by the Motion Picture Experts Group (MPEG) for delivering video and associated audio at bit rates up to around 15 MBps. MPEG-2 can deliver high-quality, full-screen, full-motion video. MPEG2 Blu-ray A subset of the MPEG-2 standard designed for encoding for high-definition Blu-ray Disc media. MPEG2-DVD A subset of the MPEG-2 standard designed for encoding for standard-definition DVD media. DVDs are a widespread distribution format and can be played on computer DVD drives, or on set-top DVD players. An MPEG2-DVD file can be encoded directly onto DVD to create a movie that plays automatically (known as an autoplay DVD), or it can be used in an authoring program (such as Encore) to create a DVD with navigational menus and other features. MPEG2-SVCD A variant of the MPEG-2 standard designed for the Super Video Compact Disc (SVCD) format. H.264 An MPEG-4-based standard for encoding for a variety of devices, including high-definition displays, 3GPP cell phones, video iPods, and PlayStation Portable (PSP) devices. H.264 Blu-ray An MPEG-4-based standard for encoding in high definition for Blu-ray disc media. Adobe Flash Video The Adobe format for delivering audio and video over the web and other networks. QuickTime The Apple Computer multimedia architecture that includes a number of codecs. The Adobe Media Encoder Export Settings dialog box is useful for setting options for QuickTime codecs. RealMedia (Windows only) The Real Network multimedia format for delivering video and audio over the web or other networks. Windows Media (Windows only) A Microsoft multimedia architecture that includes a number of codecs, particularly those for web delivery. The Adobe Media Encoder Export Settings dialog box is useful for setting options for Windows Media codecs. Note: For more detailed information about each format, see the company's website. See also "Understanding video compression, file size, and data rate" on page 383 "File formats supported for export" on page 380 April 1, 2008