Autodesk 64006-051108-9001 User Guide - Page 155

MPEG-2 Output Tab 147 File Suffix Enable File Suffix to automatically add the default Windows file type suffix to the output file for cross-platform compatibility. You can select and change the suffix if needed. Stream Type This option determines whether streamed audio and video are contained in one or two files. Program - write one file containing audio and video. Elementary - write two files: one audio and one video. Elementary streams are useful for certain DVD video authoring applications that require separate streams. AVI File Suffix Enable File Suffix to automatically add the default Windows file type suffix to the output file for cross-platform compatibility. You can select and change the suffix if needed. Interleave Interleaving an AVI file is similar to flattening a QuickTime movie. Video data is written to the disk in intermixed (interleaved) segments with audio data. 1 second and 1/2 second - Use for Network and uncompressed movies. 1 frame - Use for CD-ROM movies.