Your channel, your content: fine
Clipping your own long-form into Shorts on the same channel is the intended use. YouTube's "related video" link from a Short back to the full video is the whole point.
An automatic YouTube clipper takes a YouTube link, or watches a whole channel, and turns each video into scored vertical shorts with captions, without you downloading anything. Some tools do it per link; a few do it for every new upload, on their own. This guide covers how it works, which tools take YouTube links, how to make it fully automatic, the workflow, and the YouTube rules that decide whether the shorts get reach.
Every AI clipper calls itself automatic. For YouTube specifically, the useful distinction is how much of the loop you still start by hand. Level 1 is pasting a link instead of downloading a file. Level 2 is feeding a list of links through an API. Level 3 is the one most people mean: the tool watches your channel and clips each new upload without being asked. Level 4 adds posting.
Only one mainstream tool does Level 3 natively (OpusClip's Auto Import). Everyone else gets there with an API or MCP server plus something that checks the channel on a schedule. Both routes are covered below.
Link input saves the download step and, on most tools, lets an API or agent start a job from a URL alone.
| Tool | YouTube link | Channel watching | Max source | Automation | From | Review |
|---|---|---|---|---|---|---|
| OpusClip | Yes | Auto Import (native) | 10 h | API + MCP (26 tools), Pro+ | $15 · Pro $29 | Read |
| Klap | Yes | Via API | 4 h (5 h API) | Usage-priced API | $29 ($14 annual) | Read |
| Vizard | Yes | Via API | 600 min | API on paid plans | $29 ($14.50 annual) | Read |
| Katto | Yes | Via API / MCP | 90 min | API + MCP (16 tools), all plans | €8.90 (€4.90 annual) | Read |
| StreamClipping | Yes (+ live) | Connected channel | Plan hours | AutoPilot posting | €19 | Read |
| SupoClip | Hosted only | Via API / MCP | 3 h hosted | Self-hosted API + MCP | $0 / $9.99 | Read |
| ClipForge | Upload only | — | 4 h | — | $19 | Read |
| CapCut | Upload / cloud | — | 3 h | — | Free | Read |
Private and unlisted links often fail; make the video public or unlisted-with-link as the tool requires, or upload the file. Credits are charged on source length, so narrow the range on long videos where the tool allows it.
From no-code to code. All three end with clips in a review queue; posting is a separate switch.
Connect your YouTube channel in OpusClip, switch on Auto Import, set clip preferences and a brand template. Each new upload is clipped as it's published and lands in your project list; on Pro, send approved clips to the scheduler. Costs credits per source minute, so set a sensible clip-length range and consider a ClipAnything prompt to focus the picks.
Connect a clipper's MCP server (Katto's hosted one works on the free plan; OpusClip's on Pro) to Claude, then give a scheduled task a standing brief: "check the channel's RSS for uploads since last run, create a clip job for each new video, fetch the clips, keep those scoring 80+, and leave them in the review folder." The agent reads the feed, calls katto_create_clip_job with the URL, polls, and files the results. Add "estimate cost first" and a per-run cap. See MCP servers.
A script on a cron reads the channel's RSS feed (youtube.com/feeds/videos.xml?channel_id=…), compares against a seen-list, and posts each new URL to the clipper's API (Klap, Katto, Vizard, OpusClip, SupoClip). A webhook or poll collects the clips; a filter keeps the top-scored; files drop into a review folder or go to a scheduler. Most control, most maintenance; the right choice for agencies running many channels. See the API comparison.
What happens for each video, whether you pasted the link or the watcher did.
Clip length band (30–60 s is the productive default), number of clips, aspect ratio, caption template, and a brief if the tool takes one. Narrow the time range to skip intros and sponsor reads.
A 60-minute video yields roughly 20–30. Keep the top five to ten; the tail is where mid-sentence starts live. Tools that state a reason per pick are easier to filter automatically.
Drag the in-point to the strongest word and scrub the reframe at 2× for slides or a second speaker it missed. This is the one manual minute that keeps automatic clipping from looking automatic.
Word-synced captions on, a hook title over the first two seconds if needed, and the creator's handle in the caption. For your own channel, add a "full episode" pointer; for a campaign, the required hashtag and #ad.
Upload Shorts through YouTube itself or a scheduler that uses the official API, never a re-upload of a TikTok export with its watermark. Stagger across platforms; log views per clip so the next run's score threshold comes from evidence.
Not legal advice; the practical version of YouTube's policies as they affect clipped Shorts.
Clipping your own long-form into Shorts on the same channel is the intended use. YouTube's "related video" link from a Short back to the full video is the whole point.
Clipping another creator's YouTube video is reproduction of their work. Campaigns and creator programmes grant it in the brief; outside one you're relying on tolerance. See rights and rules.
Channels that only repost unchanged clips can lose monetisation under YouTube's reused-content rules. Captions, reframing, a title card and commentary are the transformation that helps.
Shorts are 9:16 and up to 60 seconds (longer limits exist but reach is best short). Upload the file natively; a TikTok watermark on a Short is a reach penalty and, on campaigns, a rejection.
Music in the source gets matched. Mute or replace copyrighted music before export; most clippers have a music library for exactly this.
Posting 30 near-identical Shorts an hour reads as spam to the platform. Space uploads, vary hooks, and keep a human approving above Level 3.
Per link: OpusClip, Klap, Vizard and Katto all accept a YouTube URL. Fully automatic for every new upload: OpusClip's Auto Import natively, or any of the API/MCP tools plus a scheduled task or agent.
Katto's free plan (2 videos/month, 30 min, watermark) and OpusClip's free tier (60 credits, watermark, non-commercial) take links; Klap gives one free conversion. For clean free output, SupoClip's hosted plan takes links from $9.99, or self-host and upload. See free AI clippers.
Not with link-input tools. For upload-only tools (ClipForge, CapCut, self-hosted SupoClip) you do, and only with permission; the tools don't check rights for you.
Clipping your own channel is fine and encouraged. Clipping others' needs permission. Posting is where the rules bite: native uploads, transformed content, no spam cadence. See the rules section above.
A 60-minute video is 60 credits on OpusClip or Vizard (a fifth to a tenth of a monthly plan), 60 uploaded minutes on Klap, one video on Katto, one project on ClipForge, and $0 on self-hosted SupoClip plus API usage. Model it in the earnings calculator.