How to Make YouTube Shorts From Long Videos in 5 Steps
How to make YouTube Shorts from long videos: find the moments worth clipping, reframe to 9:16, caption, cut tight and publish, without rewatching every minute.
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How to edit videos from Claude: reels and shorts from raw clips, captions that keep people watching, color, sound and voice-overs.
This blog is written by the team at nxcturnez, the small studio behind Cut Express and its sibling tools for people who work inside Claude and ChatGPT. We cut our own videos the way these guides describe and write down what works: the first two seconds, caption styles that read on a phone, when to cut on a word, how loud music sits under a voice. Questions or corrections: support@cut.express.
How to make YouTube Shorts from long videos: find the moments worth clipping, reframe to 9:16, caption, cut tight and publish, without rewatching every minute.
How word by word captions are made: a transcript with word timings, mapped through every cut and speed change, then shown as pop, karaoke or highlight styles.
How to upload video to Claude for editing with Cut Express: the upload panel in Claude.ai and Desktop, uploads from Claude Code, formats, sizes and storage.
Sound effects for YouTube videos that make edits feel finished: whooshes on cuts, hits on reveals, ambience under b-roll, and how loud each should sit.
Remove silences from video automatically without robotic jump cuts: cut on words, keep short breaths, drop false starts, hide the cuts with zooms and b-roll.
How to hook in the first 3 seconds of Reels and Shorts: six openings, the edit behind each, and how to move your best moment to the front without reshooting.
How to repurpose a podcast into Shorts and Reels: find the quotable moments in the transcript, cut each to one idea, frame the speakers, caption and publish.
How color grading LUTs for Reels work: picking a look by feel, how strong to apply it, one look per video vs per scene, and the sliders that finish the grade.
Edit videos with Claude: send your clips, describe the cut, and get an MP4 with captions, color and sound. The workflow, the prompts and what Claude decides.
The best length for Instagram Reels depends on the job: a loop, a tip, a story or a tutorial. How to pick a length for each and cut to it.
Convert horizontal video to vertical 9:16 without cutting off what matters: crop and follow, fit on a background, or stack the frame. When to use each and how.
How a gameplay highlights editor finds the best moments in a long video with no voice: sound spikes, extra motion and scene changes, then you pick the cuts.
Where to find free stock footage for YouTube, how to search so clips match what you're saying, vertical vs horizontal, and how to credit the creators.
Faceless YouTube channel video editing from script to MP4: voice-over, b-roll per line, captions, music under the voice, and a look, in Shorts and long form.
How to duck music under voice in a video: how far to drop the music, how fast to ramp, where it comes back up, and how to level the final mix for the platforms.
Set up Cut Express in Claude.ai, Claude Desktop and Claude Code: add the connector, sign in or use a key, send your first clips and render a test video.
How to clip Twitch streams into vertical shorts: download your VOD, find the moments, keep the facecam on top, add captions and post. Five steps, start to end.
Which caption styles work on Reels, Shorts and TikTok: word-by-word highlights, size, position and case, with the settings to ask Claude for in Cut Express.
How to make an AI voice over for YouTube Shorts that sounds human: write for the ear, pick a voice, pace it, and let the captions follow every word.