Hello,
the kalapi directives are only relevant for integration with the Kaltura Server. https://github.com/kaltura/nginx-vod-module can work in standalone mode.
If you have a specific technical question about using it as standalone, please post an issue here:
https://github.com/kaltura/nginx-vod-module/issues
Be sure to go over the README beforehand, we tried documenting most common use cases but of course, any documentation has room for improvement:)