fix: render image overlay in live preview window

[srinidhi-2006-bit]

Description

• Fixed image overlays not appearing in the live preview window
• Added real-time overlay rendering during editing
• Synced overlay position, size, and opacity with preview
• Added overlay image cleanup using object URL revocation
• Ensured preview matches exported video output

Related Issue

Closes #811

Type of Contribution

• Bug fix
• New feature
• Documentation update
• GSSoC contribution

Participant Info

• GitHub username: srinidhi-2006-bit
• Contribution level: Beginner

Screen Recording

Recording / Loom link:

screen-recording-2026-05-21-164131_iInRcNvN.mp4

Checklist

• I have read the contribution guidelines
• My changes follow the project structure
• I have tested my changes in Chrome, Firefox, and Safari
• bun run lint passes (no ESLint errors)
• bunx tsc --noEmit passes (no TypeScript errors)
• New interactive elements have aria-label / accessible names
• No console.log statements left in
• This PR is related to a valid issue
• Screen recording attached above

[vercel]

@srinidhi-2006-bit is attempting to deploy a commit to the magic-peach1's projects Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions]

✅ PR Format Check Passed — @srinidhi-2006-bit

Basic format checks passed. A maintainer will review your code changes.

This does not mean the PR is approved — it just means the format is correct.

[github-actions]

👋 Thanks for your PR, @srinidhi-2006-bit!

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

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

What happens next

1. 🤖 Automated checks — build & TypeScript typecheck will run automatically
2. ✅ Vercel preview — a preview deployment will be created (requires maintainer authorization for fork PRs)
3. 👀 Code review — a maintainer will review your changes
4. 🚀 Merge — once approved, your PR will be merged!

Quick checklist

• PR title follows Conventional Commits (e.g. feat: add dark mode)
• Linked the issue this PR closes (e.g. Closes #123)
• Tested the changes locally (bun run dev)
• Build passes (bun run build)

Useful links

• 📖 CONTRIBUTING.md
• 🐛 Open Issues
• ⭐ Star the repo to support the project!

Happy coding! 🎉

[magic-peach]

Hey @srinidhi-2006-bit! Thanks for the PR. There's one issue preventing merge:

Accidental file committed

The diff contains a file literally named e -i HEAD~2 — this looks like an accidentally committed git log output from a git log -i HEAD~2 command run in the wrong directory. Please remove this file and push again:

git rm 'e -i HEAD~2'
git commit -m 'chore: remove accidentally committed file'
git push

The actual code changes (PrivacyBanner, VideoEditor, VideoPreview) look good — just need to clean up that stray file!

[srinidhi-2006-bit]

Resolved the merge conflicts, cleaned up the branch, and verified the build locally. The overlay preview functionality is now working correctly with successful production build output.

Before merging the PR, could you please add the gssoc:approved label so the contribution can be counted under GSSoC'26? Thank you!