Video Specs
Standard Upload
| Max File Size | 4 GB |
|---|---|
| File Formats | MP4, AVI, MOV, WMV, FLV, MKV |
| Resolution | Up to 4K (3840 × 2160 horizontal or 2160 × 3840 vertical) |
| Max Duration | Up to 2 hours |
| Notes | H.264/AVC recommended (H.265/HEVC also supported) + AAC audio; 24/25/30/50/60 fps |
Partner / Verified Upload
| Max File Size | 20 GB (Verified Creator, unconfirmed against official docs) / 64 GB (Premium Creator / Enterprise, confirmed) |
|---|---|
| File Formats | MP4, MOV, MKV |
| Resolution | Up to 4K (3840 × 2160) |
| Max Duration | Up to 2 hours (Verified Creator); unlimited (Premium Creator / Enterprise) |
| Notes | Higher file-size ceilings via the Partner Program; resolution and duration match standard accounts at 4K/2 hours |
Minimum Resolution
| Resolution | 512 × 384 px (4:3 horizontal) or 384 × 640 px (9:16 vertical) |
|---|---|
| Notes |
[Ad]
Thumbnail & Image Specs
Video Thumbnail
| Dimensions | 640 × 360 px minimum, 5000 × 5000 px maximum |
|---|---|
| Aspect Ratio | 16:9 |
| Max File Size | 5 MB |
| File Formats | JPG, PNG, GIF |
| Notes | Custom thumbnails available to partner accounts; auto-generated for standard users |
Channel Avatar
| Dimensions | 400 × 400 px recommended |
|---|---|
| Aspect Ratio | 1:1 |
| Max File Size | 5 MB |
| File Formats | JPG, PNG |
| Notes | Shown in channel header and below videos |
Channel Cover / Banner
| Dimensions | 1920 × 1080 px (unconfirmed against primary source; strong secondary-source consensus) |
|---|---|
| Aspect Ratio | 16:9 |
| Max File Size | 5 MB |
| File Formats | JPG, PNG |
| Notes | Wide header image shown on the channel page |
Channel & Profile Assets
Channel Avatar
| Dimensions | 400 × 400 px |
|---|---|
| Aspect Ratio | 1:1 |
| File Formats | JPG, PNG |
| Notes | Used in search results, video pages, and notifications |
Text & Character Limits
Video Title
| Character Limit | 255 characters |
|---|
Video Description
| Character Limit | 3,000 characters |
|---|---|
| Notes | Plain text; first ~200 characters shown in embeds |
Tags
| Character Limit | No documented limit (official API schema shows an unconstrained list) tags |
|---|---|
| Notes | Previously listed as 60 tags / 30 characters each; could not be corroborated against official docs |
Channel Name
| Character Limit | 50 characters |
|---|
Ad Specs
Pre-roll Video Ad
| File Formats | MP4 |
|---|---|
| Resolution | 1280 × 720 px minimum |
| Max Duration | 15 – 30 seconds |
| Notes | Skippable after 5 seconds; H.264 + AAC |
Mid-roll Video Ad
| File Formats | MP4 |
|---|---|
| Resolution | 1280 × 720 px minimum |
| Max Duration | Up to 30 seconds |
| Notes | Inserted at natural content breaks for partner videos |
Display Banner Ad
| Dimensions | 728 × 90 px or 300 × 250 px |
|---|---|
| Max File Size | No fixed cap per official docs (larger images impact load time); ~200 KB commonly recommended |
| File Formats | JPG, PNG |
| Notes | Standard IAB banner sizes served around the player |