SubExtract for SEO Professionals

Content gap analysis using competitor channels

1. 1Use Channel Videos to pull a competitor's full catalog — every title, view count, and publish date in one CSV
2. 2Cluster the titles into topic buckets — what they cover, how often, and which buckets drive the most views
3. 3Extract transcripts for the top 15–20 performers to confirm the actual keywords and entities they're ranking for, not just the titles
4. 4Compare against your own channel and blog topic map — every cluster they cover and you don't is a content gap with proven demand
5. 5Prioritize gaps by search volume in Ahrefs or Semrush, then brief the videos and articles that close them

YouTube SEO audit on your own channel

1. 1Pull transcripts across your existing video catalog — focus on the 20 videos that get the most impressions but underperform on click or watch time
2. 2Check whether your target keywords actually appear in the spoken content, not just the title and description
3. 3Flag videos where the auto-caption quality is poor — bad captions hurt YouTube's understanding of the topic and suppress search visibility
4. 4Cross-reference comments to confirm whether viewers describe the video using the same language you optimized for
5. 5Re-upload corrected captions or rewrite descriptions and chapters using the verbatim phrases your audience and transcript both use

Long-form blog post creation from video content

1. 1Extract the full timestamped transcript from a high-performing video — yours or a public reference
2. 2Strip filler, restructure into H2/H3 outline matching the SERP intent for your target keyword
3. 3Expand each section with the spoken content as the source material — quotes, examples, and data points come straight from the transcript
4. 4Layer in internal links, schema markup, and the secondary keywords your SEO tool flagged for the topic
5. 5Publish a 1,500–2,500 word article that ranks for terms the video alone never could — and embed the original video for dwell time

Identifying topic gaps via competitor catalog comparison

Pull Competitor A's 280 videos and Competitor B's 410 videos into two CSVs. Cluster the titles in a sheet — keyword groups become rows, channels become columns, video counts fill the cells. The empty cells are the gaps: topics one competitor owns and the other ignores. Cross-check those gaps against Ahrefs search volume and you've got a prioritized content roadmap built from what's already proven to work in your niche.

Turning a video transcript into a 2,000-word SEO blog post

Extract a 14-minute video transcript — roughly 2,800 spoken words. Outline the SERP for your target keyword in Surfer or Mangools, then map the transcript onto the H2/H3 structure that's currently ranking. Trim the filler, rewrite for scannable prose, add the FAQ schema, and embed the source video at the top. The article ranks for 30+ long-tail variants the video alone never touched, and the embedded video pads dwell time on the page.