According to one aspect, a computer-implemented method for automatically generating a video advertisement is provided. The method includes obtaining one or more attributes relating to a video advertisement. The method includes obtaining a template, wherein the template comprises one or more blocks, wherein each block of the one or more blocks comprises one or more placeholders corresponding to one or more types of media assets. The method includes identifying, in a first block of the one or more blocks in the template, a first placeholder corresponding to a first type of media asset. The method includes selecting a first media asset from a first media library based on first metadata associated with the first media asset, the one or more attributes, and the first type of media asset. The method includes generating, using a rendering engine, a video advertisement, wherein the generated video advertisement comprises the first asset. The method includes outputting the generated video advertisement.