This project deals with the implementation of a metadata visualisation tool for the neural network developed by Ugiat Technologies. As it is a video processing software, the implemented tool is a player with extra features that allows to check if the metadata provided by the neural network is right. It has been done using web technologies for better portability, mainly in JavaScript. This way almost any device can use it, but it is created for desktop use, no matter the operating system, since it runs in a web browser, but the screen resolution should be the one of a laptop or a desktop computer, no mobile usage is covered by the design. For a better user experience, it allows voice commands to control some basic functions like playing, pausing and stopping the video as well as for enabling and disabling some of the extra features added to the video player. All the implementation is completely open source and it allows to continue adding functionalities. The product obtained is good not just for helping the development and tests of the processing software, but also for making demos of its performance.