Terminal Velocity

摘要

In the previous article ("The Terminal" in MacTech December 2004), we looked at using command-line tools to accomplish various QuickTime-related tasks, such as building movies from a series of still images or applying visual effects to an existing movie. We focused on building tools on Mac OS X, either using Xcode or just directly compiling and linking with cc on the command line. In this article, I want to continue that investigation by stepping through the process of building a command-line tool on Windows. The fundamental ideas are the same as on the Macintosh, but when moving to a different platform, it's always useful to see a step-by-step walkthrough. Then, toward the middle of this article, we'll return to Mac OS X to look at a clever way to actually draw video data on the screen using a command-line tool.