Implement API to Summarize YouTube Video

Before creating the API endpoint, let's make a script ready that will accept a YouTube video ID and will return the summarized script of the video. We will use the same OpenAI's YouTube video: OpenAI DevDay: Keynote Recap.

Steps to follow

Let's discuss the steps that will be followed to implement the script.

1. Utilize our generateYouTubeVideoCaptions() function created earlier to generate the captions.

2. Use OpenAI and a suitable prompt to summarize the captions generated.

We need to make sure that the language of summarized text remains the same as the original audio language of the video so that if the YouTube video is in English, then our summary will also be in English. If it's in Chinese, then the summary will be in Chinese, and so on.

Use OpenAI and prompts to summarize the captions

This part is pretty straight-forward since we are directly going to send a prompt with the original captions of the video to OpenAI. In our prompt, we will mention the task (summarization) and extra parameters to keep the same language of the response as the audio language.

Let's jump into the code now.