Easy AI Voice Cloning with KITS AI - Online Platform and API Usage

The video introduces Kits AI, an online platform that consolidates tools like RVC (Resemblyzer Voice Conversion) and uvr (Melodyne Unvoicer) into one service. The host demonstrates how to access the website, sign up using various accounts, and navigate the interface. Two main topics are covered: the website itself and the API, which allows for voice conversion without needing RVC or uvr installed locally. The service requires an account and has associated plans and pricing. The left-hand side of the website provides access to conversion, training, and tools, as well as a library of trained voices. The training tab is where users can train an RVC voice for voice cloning, and the process is detailed, including the time it takes for training and the ability to clean up vocals and remove instruments. The host also discusses uploading and using pre-trained models, conversion capabilities, and the option to use YouTube videos for conversion.

The host explains the concept of download minutes, which are consumed when downloading converted songs but not during conversions. The ability to switch between different voice models is highlighted, and a text-to-speech demonstration is provided using a YouTube prompt. The host also discusses the quality of the text-to-speech feature, comparing it to other services, and mentions the blender tool that allows users to merge two voices and adjust the blend ratio. Additionally, the host covers the vocal remover tool, similar to uvr, and provides a brief critique of the AI mastering feature, noting it's a relatively new feature with room for improvement.

The video script details how to access voice models using the Kits AI API. It guides the viewer through setting up a Python environment, installing necessary packages, and creating a new file for the project. The process includes obtaining an API key, setting up a request with the correct URL, headers, and parameters, and handling the response. The script also covers how to reference the API documentation for both POST and GET requests, how to build the header with the API key, and how to construct a parameters dictionary for fetching voice models.

The host demonstrates how to parse the JSON response to extract voice model names and IDs, storing them in a dictionary for later use. The script outlines creating a POST request for voice conversion, setting up the necessary URL, headers, and data fields, including the voice model ID and conversion parameters. The process of sending a sound file as raw bytes and handling the server's response is explained. The host also shows how to check the response status code and retrieve the job ID for the conversion.

The script explains how to perform a voice conversion using the Kits API. It details setting up a new response variable for the POST request and checking the status code to ensure the conversion was successful. The host shows how to extract the job ID from the response and use it to make a GET request to retrieve the conversion result. The process includes handling the conversion data and output file URL, and finally, downloading the converted file into the current directory from where the script is run.

The host conducts a comparison between an RVC trained voice and a Kits AI trained voice. The process involves running inference on an audio file with both systems and adjusting parameters to match equivalent settings. The host plays the converted audio from Kits AI first, followed by the RVC conversion, allowing the viewer to judge which one sounds better. The script also includes a demonstration of handling audio outside the range of the original voice model by adjusting the transpose and semitones.

The video concludes with an overview of Kits AI's pricing plans. The host outlines the features and limitations of each plan, including download minutes, the ability to clone voices, and the number of audio slots available for composers. The free plan allows for conversions but not downloads, requiring an upgrade for that feature. The Creator plan offers unlimited download minutes, which is a significant difference from the Converter plan. The host also provides affiliate and non-affiliate links for signing up for Kits AI and thanks the viewers for their support.