Thank you for your query and taking interest in GroupDocs / Aspose products.
We have GroupDocs.Conversion for .NET API where you can convert all major MS Office document formats into image,html and many more file formats. We are sorry currently there is no such feature available in our APIs to unzip the MS office file and convert it into different formats. However we will share this feature with product team for feasibility. Regarding your question for video format, currently we are providing support for documents and Image file formats only you can check supported documents by clicking here.
If you will need any help or you will have any other questions please feel free to ask.