How to export a vertical compilation for TikTok

TikTok's app is designed for 9:16 vertical video that fills the screen edge to edge. It has always favored full-bleed vertical content over letterboxed or pillarboxed footage, and its own recording and editing tools default to vertical framing. Uploading a compilation that's already 9:16 means TikTok doesn't have to crop or add bars to your footage, which is the single biggest thing you control on your end.

What TikTok expects from the file

TikTok's own help pages state supported resolutions, frame rates and file-size ceilings, and those numbers get revised over time as the app evolves. Rather than repeat a specific figure that might already be stale, treat this as the rule: before a big upload, check TikTok's current in-app or web help pages for file size and length limits, because they do change and vary somewhat by account type and region. What has stayed consistent for a long time is the general shape: vertical 9:16, MP4 with H.264 video and AAC audio, uploaded from a phone or through the web uploader.

TikTok also re-encodes every video on upload, regardless of how carefully you compressed it. This means your original bitrate is not what viewers ultimately watch — TikTok is going to run its own compression pass. That's a reason not to over-invest in shaving your file down at the cost of visible quality; a slightly larger, cleaner MP4 usually survives TikTok's re-encode better than an over-compressed one.

Setting up your ReelWorkshop export

1. Build the edit at a TikTok-friendly length

   ReelWorkshop generates edit plans at 60, 75 or 90 seconds. TikTok supports videos well beyond that, but shorter edits (60s) tend to hold attention better for a feed built on quick swipes, so start there unless your content genuinely needs more room.

2. Choose 1080x1920

   Pick 1080x1920 in the export settings for the sharpest result. 720x1280 is available and produces a smaller file, useful if you're on a slow connection or tight on the monthly export minutes, but 1080x1920 is closer to what current phones display natively.

3. Decide on audio

   If your clips have usable ambient sound or dialogue, keep audio. If you plan to add a TikTok sound after uploading, mute the export in ReelWorkshop first so the two audio tracks don't clash.

4. Render and download

   Render in the browser, watch progress on the Exports page, then download the MP4 and upload it to TikTok through the app or web uploader like any other video file.

Safe areas and on-screen UI

TikTok's own interface overlays your video: caption text near the bottom, the profile icon, like/comment/share icons and music disc run down the right edge, and the caption and username sit near the bottom-left. If your compilation has titles or captions baked into the footage, keep them away from the outer edges, particularly the bottom third and the right-hand strip, since TikTok's UI can cover that area depending on the viewer's screen and settings.

Mistakes to avoid

• Uploading a compilation still in landscape and letting TikTok crop it automatically, which usually cuts off the sides of the frame.
• Baking in captions or logos flush against the bottom edge, where they get covered by the caption and UI icons.
• Assuming a stated duration or file-size limit is still accurate — check TikTok's current help documentation before a time-sensitive upload.
• Over-compressing before upload; TikTok re-encodes anyway, so extreme pre-compression mostly just loses quality for no benefit.

When ReelWorkshop isn't the right tool

If you need trending-sound syncing, auto-captions, green screen effects or in-app effects and filters, that work happens inside TikTok itself or in a general editor like CapCut — ReelWorkshop doesn't do captioning, effects or music library selection. Use ReelWorkshop to assemble and pace your clips into a finished vertical MP4, then handle TikTok-native features after upload or in another tool before export.