DirectShow（有时缩写如DS或DShow），开发代号Quartz，是一种由微软公司开发的能够让软件开发者对媒体文档执行各种不同处理的应用进程设计接口。它是微软公司对早先Windows视频科技的一次更新。基于微软公司Windows组件对象模型（COM）框架，DirectShow为大部份微软公司进程设计语言提供了一个媒体的普遍接口，而且是一个可扩展的，能在用户或开发者的命令下播放或记录媒体文档的，以Filter为基础的框架。DirectShow开发工具及凭证被加入到微软公司SDK平台的一部份。Windows Media Player这样的应用进程运用DirectShow或者它的各种衍生来播放来自文档或是互联网上的内容。DirectShow's的最大的竞争对手是苹果计算机的QuickTime框架。

DirectShow (sometimes abbreviated as DS or DShow), codename Quartz, is a multimedia framework and API produced by Microsoft for software developers to perform various operations with media files or streams. It is the replacement for Microsoft's earlier Video for Windows technology. Based on the Microsoft Windows Component Object Model (COM) framework, DirectShow provides a common interface for media across various programming languages, and is an extensible, filter-based framework that can render or record media files on demand at the request of the user or developer. The DirectShow development tools and documentation were originally distributed as part of the DirectX SDK. Currently, they are distributed as part of the Windows SDK (formerly known as the Platform SDK).