Best AI podcast clip makers for YouTube Shorts in 2026

What changed for Shorts in 2026

YouTube Help still states the same core rule it set in 2024: a video with a square or vertical aspect ratio, uploaded on a standard channel on or after 15 October 2024, is categorised as a Short if it runs up to 3 minutes (checked 2026-10-11). Older uploads keep their original classification, and anything wider than square, such as 16:9, is never classed as a Short no matter how short it is.

Resolution is capped, not open-ended: YouTube Help's Shorts upload guidance gives a maximum of 1080p (checked 2026-10-11), and its resolution tables only print pixel sizes for 16:9, so there is no official 1080x1920 figure — that number is the vertical rotation of 1080p, and it is what most clip tools, including KeyMo, export to.

What YouTube does not publish is a safe-zone margin for captions on Shorts itself. The only dated, platform-stated percentages we found are Meta's, for Instagram Reels and Facebook Reels ads: 14% of the top, 35% of the bottom and 6% of each side kept clear of text and logos (checked 2026-10-11). Those numbers are for Reels ads, not Shorts, but they are the strictest published figures available, so treating them as a floor for any vertical caption is the safer default across platforms.

Top picks for Shorts: quick table

KeyMo: ranked clips, auto reframe to 9:16, 1080x1920 output, no watermark, no free plan. Best for: solo podcasters who want a scored shortlist, not a timeline to scrub.

OpusClip: ranked clips with a 0-99 virality score, 1-credit-per-minute pricing, free plan caps the crop at 608x1080 with a watermark rather than a full 1080x1920 frame (checked 2026-10-11). Best for: high volume, if you're fine paying per minute imported.

Descript: transcript-first editor with clipping as one feature; Underlord assistant picks moments. Best for: people who want to fix a Short by editing text, not by re-cutting video.

Riverside Magic Clips: automatic clips from recordings made in Riverside itself, typically 2 clips per 5 minutes of conversation (checked 2026-10-11). Best for: shows already recorded there — it can't pull in a YouTube link.

CapCut auto-cut tools: manual-first, with templates and an auto-captions feature rather than a ranked shortlist. Best for: people who want to do the moment-picking themselves and just want the vertical crop and captions handled fast.

KeyMo spotlight: ranked clips plus Shorts-ready framing

KeyMo takes a YouTube link or an MP4/MOV upload (5 minutes to 3 hours, up to 10 GB) and returns up to 15 clips, each scored out of 10 with a one-line reason, keeping only clips that score 7 or higher. Every clip is cut to 15-90 seconds, which sits well inside YouTube's 3-minute Shorts cap, and exports at 1080x1920, 30 fps, H.264/AAC — the vertical rotation of YouTube's own 1080p ceiling, not above it.

Reframing is automatic face-tracking, which matters for Shorts because a 16:9 source cropped to 9:16 keeps only about a third of the original width; KeyMo moves that crop to whoever is talking instead of leaving a static centre crop. Captions run word by word in one of 12 styles, and because YouTube publishes no safe-zone numbers for Shorts, the practical move is to keep caption blocks inside the stricter Meta Reels-ad margins (bottom 35%, top 14%, sides 6% each) as a cushion against any app's on-screen buttons.

Pricing is by source minutes, not by clip count or by crop size: Starter is $12 a month for 300 source minutes, Pro is $29 for 900. There's no free plan and no trial, and every export is watermark-free on both plans.

Format-specific picks: video podcast vs. audio-only

If your show is recorded on camera, KeyMo, OpusClip, Vizard and Klap all take the video and do the reframing and picking for you — go with whichever pricing model fits your volume (see the fuller pricing breakdown in our seven-tool comparison below).

If your show is audio-only, none of these tools solves it outright. YouTube Shorts requires a visual, moving or still, so an audio-only episode needs a waveform, static image or generated background added before it can be clipped and uploaded — KeyMo does not export audio-only or add a static-image track, so check that a tool explicitly supports an audio-plus-image workflow before you rely on it for an audio-only podcast.

If your show is already recorded in Riverside, Magic Clips skips the upload step entirely since it works on the recording you already have there — but it can't import a YouTube link, so it's a poor fit if your source lives outside Riverside.

Checklist before you publish a Shorts clip

Aspect ratio: square or vertical, never 16:9 — YouTube will not classify a widescreen upload as a Short regardless of length (checked 2026-10-11).

Length: 3 minutes or under for the clip to count as a Short at all; KeyMo's longest setting (60-90 seconds) leaves plenty of headroom.

Resolution: 1080p is YouTube's stated ceiling for Shorts, so exporting above that adds nothing YouTube's own pages promise. 1080x1920 matches it exactly.

Safe zones: no YouTube-specific numbers are published, so keep captions and key faces out of roughly the top 14% and bottom 35% of the frame as a cross-platform cushion, and check each clip on a phone before posting, since different apps place their own UI differently.

Permission: clip only your own video, or a show where you have the owner's permission — KeyMo asks you to confirm this before it imports a YouTube link.