How to upload a video
Drop a long-form video into Sliver and the pipeline generates clips, chapters, and a condensed cut automatically.
3 min read · updated 2026-05-15
- Step 01
Open the upload page
From the editor, tap the “New” tab in the top navigation. On mobile, open the hamburger menu and tap “New.” This drops you on the upload screen.
Screenshot pendingEmpty upload page with drag-and-drop target
The drag-and-drop target accepts a single .mp4, .mov, or .mkv up to 16 GB. - Step 02
Drop your file (or pick from disk)
Drag the file directly onto the upload area, or click the “Choose a file” button. Sliver validates the MIME type and the magic bytes — if the file isn’t a real video container it won’t even start the upload.
- Step 03
Name the project
Sliver auto-fills a project name from the filename (e.g. “elden-ring-run-1”), but you can rename it now or later from the project picker. Pick something searchable — once you’re on Pro or Business you’ll have a lot of projects in here.
- Step 04
Start the pipeline
Tap “Start processing.” Sliver streams the upload to storage, kicks off Whisper transcription (~20× realtime), then Claude scoring, then renders. Total wall-clock for an 8-hour stream is ~25–30 minutes on the default queue, faster on Pro+.
Screenshot pendingUpload progress bar with five-step pipeline indicator
Each step lights up as the pipeline progresses. You can close the tab — we’ll email you when it’s done. - Step 05
Open the project when it’s ready
You’ll get an email (and an in-product notification) when the cut is ready. Click into the project from your dashboard, or open the editor directly via the “Editor” tab.
Good to know
Source-length caps by plan
Free = 30 minutes, Starter = 3 hours, Pro = 8 hours, Business = unlimited. Uploads exceeding your cap are rejected at the validation step before the pipeline starts.
Supported formats
.mp4, .mov, .mkv, .webm. We re-encode internally so codec details don’t matter, but container has to be one of the four. .ts and .flv are coming.
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