.NET没有内置的支持来创建视频。您需要找到第三方库，以帮助您以您想要生成的任何格式创建视频。这些库的支持需要来自编写它的开发人员。

.NET does not have built in support for creating videos. You'll need to find a third party library to help you create the video in whatever format(s) you want to generate. Support for those libraries will need to come from the developer(s) who wrote it.