I am using the Youtube Data API (v3) to find, load and display a video with all its information. However, I want to also show other video suggestions next to it. These should be similar to the content of the video that is currently being watched.
I thought that I could do that with the topicId or the videoCategoryId parameter of the search list. However, I don't know how I can get the category or topic of the main video. All possible information I can get is the following:
- contentDetails
- fileDetails
- id
- liveStreamingDetails
- localizations
- player
- processingDetails
- recordingDetails
- snippet
- statistics
- status
- suggestions
- topicDetails
How can I get the topic of a video and then use it to find other ones that are similar?
There are topicDetails and snippet.categoryId.
Note that directly using the filter relatedToVideoId from the YouTube Data API v3 Search: list endpoint would maybe make more sense.
Update-
The search.list method's relatedToVideoId parameter has been deprecated from August 7, 2023 by YouTube.
https://developers.google.com/youtube/v3/revision_history#june-12,-2023