Automatically Trim Long Videos in Premiere Pro Using AI: No More Manual Cuts

TLDR: Premiere Assistant's Shorten Video feature automatically detects and removes unnecessary sections of a long video (rambling, repetition, and tangents) by analyzing the transcript and suggesting cuts you can review before applying.

Manual trimming is one of the most soul-sucking parts of editing. You start with a 30-minute video and spend more than an hour just trying to make it watchable. Every unnecessary pause, ramble, or repeated take adds up, and by the time you're done, you’ve used more energy to trim video content than create it.

Thankfully, that’s where AI comes in. Now you can use a video shortening tool to take care of the grunt work for you.

Premiere Assistant's Shorten Video tool, part of its Auto Rough Cut feature, lets you instantly detect and remove unnecessary parts of your video without scrubbing through footage. Whether you’re cutting a YouTube vlog, podcast episode, or marketing explainer, you can now skip the tedious trimming process and get straight to the fun part with the help of this video trimmer.

What Is AI-Powered Video Trimming?

You may ask how to cut a video using AI… Instead of analyzing visuals or relying on manual markers, Premiere Assistant uses speech recognition to transcribe your video, understand the content, and spot sections that can be trimmed, like filler, repetition, or tangents. You get a suggested rough cut with everything that matters, and nothing that doesn’t.

And the best part? It all happens inside Premiere Pro. That sounds like a pretty sweet deal to the average video editor who uses the Adobe editing suite.

Here’s What You Can Do With A Video Shortener Tool

• Instantly remove rambling segments from long interviews

• Cut down podcasts or webinars into short-form clips for social media content like TikTok videos, Instagram Stories/Reels, or Facebook Stories

• Speed up first drafts for clients without rewatching raw footage, but while still ensuring the video quality

• Keep only the best takes (and let AI identify them from your video clips)

• Combine the trim tool with silence or filler word removal for ultra-tight edits without touching your video timeline

If you’ve ever said, “This could be shorter,” this feature was made for you to use on your next video project.

Why It Works So Well To Trim Video In Premiere Pro

Because Premiere Assistant integrates directly into your timeline, you’re not jumping between tools or exporting cuts to test them. You ask the AI assistant to shorten your video, preview the gray-highlighted cuts, and choose whether to keep or remove each one. The best part? The tools work effectively regardless of the video length. It’s like working with a smart co-editor who knows your time is valuable.

You still keep full creative control, but without all the grunt work.

How To Trim a Video In Premiere Pro Using AI Video Editing Software

Step 1: Launch Premiere Assistant and Open Your Project

Once your video and audio files are in the Premiere Pro timeline, open the Premiere Assistant extension from Window > Extensions > Cutback.

Step 2: Select the Auto Rough Cut tool to splice video

Click into Auto Rough Cut, select your language and speaker settings, and hit Recognize to transcribe the video.

Step 3: Use “Shorten Video” to Condense Your Video’s Length

Then, click the Assistant button in the top-right corner and either select or type the preset: Shorten Video. The AI will analyze your subtitles and highlight less important moments in gray. You can preview each suggested cut, undo anything with the scissor icon, and hit Confirm to finalize the edit.

Step 4: Apply the Result to Your Sequence

From there, just click Apply to Sequence, and your AI-trimmed draft will appear right in your Premiere Pro timeline.

Done.

But Wait, Does A Clip Trimmer Actually Work?

Yes, with one caveat: it works best on videos with dialogue. If there’s no speech, there’s nothing to analyze because it uses audio transcription, so this feature isn’t designed for music videos or B-roll montages. But if you’re editing anything that involves spoken content (interviews, tutorials, talking-head clips), the AI shines with its array of video editing features.

Regardless of the video duration, the video cutter will split video clips according to your specifications, even more so with the new chat UI integrated into Premiere Assistant, which will cut video using context.

FAQs About How To Shorten A Video With Premiere Assistant

Q: Can I undo the changes if I don’t like the cut?

Yes. Unlike some other video editing tools, Premiere Assistant comes with a Time Machine feature and undo support, so you can test, review, and reverse any cut without losing progress.

Q: Will it mess up my subtitles?

Nope. Subtitles are managed separately and can be exported or replaced later. If you're working with captions, they’ll remain aligned.

Q: Can I use this with other AI presets?

Absolutely. You can combine Shorten Video with Remove Silences or Remove Filler Words to get even tighter edits.

Stop Cutting. Start Creating.

You’re a storyteller, not a timeline janitor. With Premiere Assistant’s AI trimming tools, you can skip the repetitive cleanup and get straight to shaping a better story. That means more creativity, more videos finished, and less time lost to drudge work.

Try the Shorten Video preset on your next Premiere Pro project.

Let AI do the trimming, so you can get back to editing.

For more in-depth knowledge about the ins and outs of video editing and video platforms, check out our latest posts on the Cutback blog or our YouTube channel.

Frequently Asked Questions (FAQs)

Q: How do you automatically trim a long video in Premiere Pro?
A: Premiere Assistant's Shorten Video feature handles this inside Premiere Pro without manual scrubbing. Open Premiere Assistant (Window > Extensions > Cutback), select Auto Rough Cut, transcribe your sequence, then click the Assistant button and choose Shorten Video. The AI analyzes your transcript, identifies rambling sections, repetition, and tangents, and highlights them in gray for preview. Review each suggested cut, confirm the ones you want to keep, then click Apply to Sequence. The trimmed draft appears directly on your Premiere Pro timeline.

Q: How do you trim video in Premiere Pro manually?
A: The three most common methods are: the Selection tool (drag the edge of a clip to trim), the Ripple Edit tool (B key) which trims and automatically closes the gap by shifting downstream content, and the keyboard shortcut Q (ripple trim before playhead) and W (ripple trim after playhead) which trim to the playhead position in one keystroke. For splitting a clip at the playhead, use Command+K (Mac) or Ctrl+K (Windows). The fastest manual workflow for long videos is to play at 1.5-2x speed, split at natural cut points with Ctrl/Cmd+K, then ripple delete unwanted sections with Shift+Delete.

Q: What is ripple trim in Premiere Pro and how do you use it?
A: Ripple trim is a trim type that removes frames from a clip while automatically closing the gap and shifting all downstream content on the timeline to fill the space, keeping everything in sync. To use it, select the Ripple Edit tool (B key), then drag the edge of a clip to trim, the gap closes automatically as you drag. The keyboard shortcuts Q and W are faster for most editors: with the playhead positioned where you want to cut, Q trims everything before the playhead on the selected clip and ripple deletes it; W trims everything after the playhead and ripple deletes it.

Q: How do you trim multiple clips at once in Premiere Pro?
A: For shortening multiple clips simultaneously, select all the clips you want to trim (Ctrl+A selects all or click and Shift+click for a range), then use the Rate Stretch tool or time-remapping to adjust duration across all selected clips at once. For trimming a consistent amount off the end of multiple clips, the most reliable method is to use Premiere Assistant's Shorten Video feature, it applies AI-detected cuts across all content simultaneously rather than requiring per-clip manual trimming. For batch shortening based on content rather than duration, Shorten Video identifies and removes the rambling sections across the full sequence regardless of how many clips it spans.

Q: What is the keyboard shortcut to cut a clip in Premiere Pro?
A: The primary cut shortcut is Command+K (Mac) or Ctrl+K (Windows), which splits the clip at the playhead position. To split all clips on all tracks at the playhead simultaneously (not just the selected track), use Shift+Command+K (Mac) or Shift+Ctrl+K (Windows). The C key activates the Razor tool for click-based splitting without the playhead. For ripple-based trimming shortcuts, Q removes content before the playhead and W removes content after the playhead on the selected clip with an automatic gap close.

Q: How do I change the cut shortcut in Premiere Pro?
A: Go to Edit > Keyboard Shortcuts (Windows) or Premiere Pro > Keyboard Shortcuts (Mac) to open the full shortcut editor. Search for the function you want to remap, "Razor" for the blade cut, "Add Edit" for the Command+K split, or "Trim" for ripple functions, and click the existing shortcut to reassign it. Premiere Pro allows custom shortcut profiles that can be exported and imported between machines. Changes apply immediately after clicking OK.

Q: How do you split a clip in Premiere Pro?
A: Position the playhead where you want to split, then press Command+K (Mac) or Ctrl+K (Windows) to split the clip at that point. Alternatively, press C to switch to the Razor tool and click directly on the clip at the split point. To split all clips across all tracks at once (useful for keeping multicam and audio tracks aligned), use Shift+Command+K (Mac) or Shift+Ctrl+K (Windows). After splitting, switch back to the Selection tool with V and delete or ripple delete the unwanted segment.

Q: Is there a free tool to trim long videos in Premiere Pro?
A: Premiere Pro's native trimming tools (Selection tool, Ripple Edit, Razor) are included with a Creative Cloud subscription and handle manual trimming at no extra cost. Premiere Assistant's Shorten Video feature, which automatically detects and removes unnecessary content using AI, requires a paid plan after a trial period. For manual trimming of shorter videos without AI automation, the native Premiere Pro tools are free within the Creative Cloud subscription.