YouTube AI Tools
Summarize subtitles and analyze YouTube comments using artificial intelligence
Summarize a YouTube video and its comments
YouTube AI Tools work from a single YouTube link: summarize the video from its captions, analyze what viewers say in the comments, or get an AI perspective on the creator's arguments, in one of 36 languages. All tools are part of Pro, with a fixed credit price, or a per-minute price when a video has no captions.
How the YouTube AI tools work
- 1
Paste a YouTube link
Watch, Shorts, live and youtu.be links all work. DownSub shows the title and duration and looks up the video's captions in the background.
- 2
Choose a tool
Pick Summarize, Analyze Comments or AI Perspective, then the output language. Each card shows its credit cost before you start.
- 3
Read the result
The result appears as formatted text with headings, ready to copy. Open another tool on the same video without pasting the link again.
Four tools for one video
Video summary
A summary built from the video's captions, in 8 styles such as key points, action items or a timeline. You can limit it to a start and end time.
Comment analysis
Reads up to about 500 of the most relevant comments and replies, then reports the main topics, majority opinions, debates and how the comments relate to the video.
AI perspective
The AI gives its own view of the creator's arguments: where it agrees, where it pushes back and what the video leaves out.
Subtitles for videos without captions
When a video has no captions, generate them from its audio with AI transcription for 5 credits per minute.
At a glance
- Input
- A YouTube video link (watch, Shorts, live or youtu.be).
- Output
- Formatted text in 36 languages; generated subtitles as SRT, VTT, TXT, Word, PDF and more.
- Limits
- Without captions, summary and perspective watch the video itself, up to 180 minutes.
- Cost
- Summary 25, comment analysis 25 and AI perspective 25 credits. Without captions: 3 credits per minute watched, at least the fixed price.
- Account
- Sign-in and Pro ($5 a month, 5,000 credits included) are required.
YouTube AI tools FAQ
Can it summarize a video that has no captions?
Yes. The AI then watches the video itself, which costs 3 credits per minute (at least 25) and works for videos or time ranges up to 180 minutes.
How many comments does the analysis read?
Up to about 500 comments and replies, taken in YouTube's relevance order. The report also lists how many comments were analyzed.
How much does each tool cost?
With captions, a summary costs 25 credits, a comment analysis 25 and an AI perspective 25. Pro costs $5 a month and includes 5,000 credits.
Can I summarize only part of a video?
Yes. Set a start and end time in the summary dialog. With captions, only that part of the transcript is used; without captions, you pay only for the minutes in the range.
Does it work with videos from other sites?
These tools take YouTube links only. For other sites, download the subtitle with the Subtitle Downloader and summarize it with the Subtitle Summarizer, or use Video to Summary.