# Build a TikTok clone: from video upload to a working feed

Canonical page: [Build a TikTok clone: from video upload to a working feed](<https://clone4.me/guides/build-tiktok-clone/>)

A vertical feed is the visible part of a short-video app. The useful product starts earlier, when a creator uploads a file, and continues after publication through reports, blocks and deletion. Build that full lifecycle before adding recommendation claims.

## A practical starting point

Start with a following or chronological feed, bounded video uploads and explicit processing/review states. Use an authenticated backend, private media storage and a worker or video service. Publish only playable, authorized media and keep one active player while browsing.

## Make one creator’s upload work end to end

Choose a documented duration limit, file-size limit and set of accepted inputs. The creator uploads permitted footage, sees progress, waits for processing, reviews the result and publishes. Other users see a playable clip with a poster, captions and working interactions.

Use your own content and identity. Music catalogs, face filters, live commerce, duets and personalized recommendation training are outside this first build. A chronological or following feed is a legitimate product choice; describe its ordering honestly rather than calling it a trained “For You” system.

## Give media an explicit state machine

A proposed lifecycle is uploading → processing → ready for review → published, with failed and removed states. Feed queries return only clips that are both published and playable. A database row should not become visible simply because an upload URL was issued.

A worker or video service produces the supported renditions and poster. Cloudflare’s direct-upload documentation illustrates server-provisioned upload URLs that avoid exposing a provider token in the client. You still need your own ownership, publication and moderation rules; an upload service does not supply them automatically.

- [Cloudflare Stream direct creator uploads](<https://developers.cloudflare.com/stream/uploading-videos/direct-creator-uploads/>)

## Make file handling and access separate checks

Check identity and permissions before accepting an upload or publish request. Validate the received media, apply limits, generate safe storage names and keep processing isolated from the main request handler. Do not trust a filename extension as proof of a video’s format.

OWASP’s file-upload guidance describes layered validation and safe storage. Adapt it to your media pipeline. Keep drafts private, make playback authorization consistent with account/block rules and avoid leaking original upload locations through public APIs.

- [OWASP file-upload guidance](<https://cheatsheetseries.owasp.org/cheatsheets/File_Upload_Cheat_Sheet.html>)

## Design for one active player and usable controls

Pause the previous clip when the next becomes active. Limit preloading so a long feed does not keep downloading every video. Handle denied autoplay with a clear play control. Include keyboard browsing and accessible mute/caption controls rather than relying solely on swipe gestures.

Likes, saves and comments should use real authenticated state. A repeated click or retried request must not create duplicate likes. Start with simple pagination and stable ordering, then test what happens when a clip disappears while someone is viewing it.

- Test malformed uploads, processor failure and a retry without duplicate publication.
- Try blocked-user playback through both the feed and a direct endpoint.
- Remove a published clip and verify its feed entries and playback URLs are invalidated.
- Make reporting and moderator review reachable from the clip.

## Choose which video product you are building

TikTok is a useful reference for short clips and vertical browsing. Instagram adds a photo-oriented social graph, while YouTube emphasizes channels and a video library. A Netflix-inspired project is a managed library with viewing profiles rather than an open social-upload network. Each needs a different first data model.

Customize the full TikTok brief with your audience, moderation policy and media limits. The extension below makes the initial delivery explicit. Do not treat a successful post to an external platform as evidence that you have built an independent video service.

### Instructions to add after the complete brief

Use a chronological/following feed. Implement upload, processing, review, publish, failure and removal states. Keep drafts private, validate media and expose no provider secrets. Verify one active player, denied autoplay, duplicate-like retries, reporting, blocked users and deletion across all renditions.

- [TikTok build brief](<https://clone4.me/tools/tiktok-clone/>)
- [Instagram build brief](<https://clone4.me/tools/instagram-clone/>)
- [YouTube build brief](<https://clone4.me/tools/youtube-clone/>)
- [Netflix build brief](<https://clone4.me/tools/netflix-clone/>)

## Related build briefs

- [TikTok build brief](<https://clone4.me/tools/tiktok-clone/>)
- [Instagram build brief](<https://clone4.me/tools/instagram-clone/>)
- [YouTube build brief](<https://clone4.me/tools/youtube-clone/>)
- [Facebook build brief](<https://clone4.me/tools/facebook-clone/>)