Scheduling a Short is the same operation as scheduling any YouTube video, because a Short is just a video that happens to be short and vertical. There’s no separate Shorts scheduler and no separate upload.
Which means the interesting question isn’t how to schedule a Short. It’s how to stop uploading the same file three times.
Scheduling on YouTube itself
Note: This comes from YouTube’s own help documentation on upload visibility settings, checked on 29 August 2026. YouTube’s help does not call Shorts out separately in that article, so this describes the upload flow rather than quoting a Shorts-specific limit.
During upload, set visibility to Schedule and pick a date. The video stays private until then and publishes itself. YouTube treats it as a Short based on the file: short, vertical, within the format’s length rules. You don’t tick a box.
The actual problem
Vertical video is expensive to make and cheap to distribute, and it goes to the same three or four places every time:
| Platform | Caption limit |
|---|---|
| YouTube (Short) | 5,000 |
| TikTok | 2,200 |
| Instagram (Reel) | 2,200 |
| Snapchat | 160 |
One file. Four destinations. Four uploads, four captions, four queues, if you do it by hand.
That’s the job worth automating, and it’s why “how to schedule YouTube Shorts” usually turns out to be a question about scheduling three platforms.
What each accepts
Through BulkPublish:
- YouTube: video up to 128 GB, MP4, MOV, AVI, FLV or WebM, 5,000-character description
- TikTok: video up to 4 GB, MP4 or MOV, 2,200-character caption
- Instagram: video up to 1 GB, MP4 or MOV, 2,200-character caption
- Snapchat: video up to 1 GB and 60 seconds, MP4 or MOV, 160-character caption
Snapchat’s 160-character caption is the one to plan for. It’s far below the others, so that caption needs writing rather than trimming.
The workflow
- Upload the vertical video once
- Select YouTube, TikTok, Instagram and Snapchat as destinations
- Write the caption for each, from one draft
- Pick a time and queue it
Media rules are checked per platform before the post is queued, so a file one platform would reject is flagged while you’re composing rather than failing silently later.
Captions still shouldn’t be identical
The file travels unchanged. The text shouldn’t.
The hashtag conventions differ, the audiences behave differently, and YouTube’s description is doing search work that a TikTok caption isn’t. Writing four versions from one draft in one place takes a couple of minutes. It’s the difference between a Short that looks native everywhere and one that obviously came from somewhere else.
Plan limits
- Channels: Free: 3 (1 per platform). Pro: 30 (2 per platform). Business: 75 (5 per platform).
- Posts: Free: 3/day. Pro: 30/day. Business: unlimited.
- Storage: Free: 100 MB. Pro: 2 GB. Business: 10 GB.
Storage is the number to size against if you post vertical video regularly. Channel count rarely is.
The short version
A Short schedules like any upload: choose Schedule instead of Public and pick a date. The real work is the other three platforms the same file belongs on, and getting all four out of one upload with four captions written from one draft.