I Built NirvaCrop — An Offline AI Tool That Converts 16:9 Videos Into 9:16 Reels

Source: Dev.to

The Problem Creators Face

Imagine you have a long video recorded in 16:9 format for YouTube and you want to repurpose parts of that video for Reels, Shorts, or TikTok. Most existing solutions require:

• Uploading your videos to an online service
• Waiting for cloud processing
• Being dependent on internet speed
• Manually editing every clip

When you have multiple videos, the process quickly becomes slow and repetitive, causing creators to spend more time reformatting than actually creating content.

NirvaCrop

NirvaCrop is an offline AI‑based video reframing tool that automatically converts 16:9 horizontal videos into 9:16 vertical format, making them ready for short‑form platforms.

• Intelligent framing – instead of simply cutting the center portion, the AI selects the most relevant area of the frame so the main subject stays visible.
• Local processing – videos never leave your computer. No uploads, no cloud processing, no internet dependency.
• Batch conversion – convert multiple videos from 16:9 to 9:16 in one go.

Why Offline Matters

Offline video processing offers several advantages over cloud‑based tools:

• Faster processing for large video files
• No upload time
• Works without an internet connection
• Better privacy and control over your files

For creators with large video libraries, this can save a significant amount of time.

Use Cases

NirvaCrop is especially useful for:

• YouTubers repurposing long videos into Shorts
• Instagram Reel creators
• TikTok creators
• Social media managers handling large batches of video content

Instead of manually cropping each video, creators can convert them quickly and efficiently.

Goal

The goal behind NirvaCrop is simple: create a fast, privacy‑first tool that helps creators repurpose their content easily without relying on the internet. Sometimes the best software is not the biggest or most complex—it’s the one that solves a real problem in the simplest possible way.

Feedback

If you’re a creator or developer working with video tools, I would love to hear your thoughts and feedback.

Check it here.