fix: reset all settings when new video file is uploaded

[sudha09-git]

Description

Related Issue

Type of Contribution

• Bug fix
• New feature## Bug Fix
  Closes [BUG] Re-uploading a new video file does not reset previous conversion settings #915

Problem

When a user uploaded a new video file without refreshing the page,
the previous preset selection, output settings, overlay settings,
and conversion state were still shown from the previous session.
This could cause users to unknowingly apply wrong settings to new files.

Changes Made

Only src/hooks/useVideoEditor.ts modified:

• Reset recipe to DEFAULT_RECIPE on new file upload
• Reset duration to 0
• Reset overlayFile to null
• Reset overlayPosition to "bottom-right"
• Reset overlaySize to 150
• Reset overlayOpacity to 100
• Apply suggested preset based on new video dimensions
• Clear previous result, error and status

How to Test

1. Open the app
2. Upload a video and select a preset (e.g. Instagram Square)
3. Change brightness, speed, rotate settings
4. Without refreshing, upload a different video
5. Observe: all settings reset to default ✅
6. Preset auto-suggests based on new video dimensions ✅

Type of Contribution

• Bug fix
• GSSoC contribution

Participant Info

• GitHub username: sudha09-git
• Contribution level: Beginner
• Documentation update
• Refactor
• GSSoC contribution

Participant Info

• GitHub username:
• Contribution level (Beginner/Intermediate/Advanced):

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[github-actions]

👋 Thanks for your PR, @sudha09-git!

Welcome to Reframe — a browser-based video editor built for everyone 🎬

🟠 GSSoC'26 PR detected — thanks for contributing under GirlScript Summer of Code 2026!

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[sudha09-git]

Hi @magic-peach

This PR fixes issue #915 — re-uploading a new video file
now fully resets all previous conversion settings.

Changes made in src/hooks/useVideoEditor.ts:
✅ Reset recipe to DEFAULT_RECIPE on new file upload
✅ Reset duration, overlayFile, overlayPosition,
overlaySize, overlayOpacity to defaults
✅ Clear previous result, error and status
✅ Auto-suggest preset based on new video dimensions
✅ Build passing locally
✅ No conflicts with main

How to test:

1. Upload a video → change preset, brightness, speed
2. Without refreshing, upload a different video
3. All settings reset to default ✅
4. Preset auto-suggests based on new video ✅

Please review when you get a chance!

[sudha09-git]

/PR Recheck

[sudha09-git]

please approve this pull request
I am gssoc 2026 contributor