BlueSky Video Specifications
Complete guide to BlueSky video dimensions, duration limits, and technical specifications. Upload videos with perfect format for the decentralized social network. Updated for 2026.
Quick Specs
Dimensions & Resolution
Standard HD format
Mobile-optimized vertical
Works across all layouts
Lower resolution option
Video Duration
Minimum: 1 seconds
Maximum: 180 seconds
Up to 3 minutes (expanded from 60 seconds in 2024)
Important Notes
BlueSky added native video support in 2024, initially limited to 60 seconds and now up to 3 minutes. Each post can include one MP4 video (up to 100MB) OR up to 4 images, but not both. Bluesky-hosted accounts must have a verified email before their first video upload, and Bluesky enforces a per-account daily ceiling of 25 videos or 10GB combined. Videos are processed and compressed server-side for optimal delivery.
Optimization Tips
- ✓Keep videos under 90 seconds for best engagement
- ✓Use MP4 with H.264 codec for compatibility
- ✓Add captions for accessibility (autoplay is muted)
- ✓A post can contain 1 video OR up to 4 images, never both
- ✓Bluesky-hosted accounts need a verified email before the first upload
- ✓Bluesky enforces a 25-videos-or-10GB daily ceiling per account
- ✓Compress before upload to stay under 100MB
- ✓Hook viewers in first 3 seconds
Sources & Verification
Last verified: 2026-05-16
Up to 3 minutes (180s) per video, MP4 only, 100MB cap. 1 video OR up to 4 images per post (mutually exclusive). Bluesky-hosted accounts: verified email required for first upload; daily ceiling 25 videos / 10GB combined.
Technical Specifications
Processing
Videos processed server-side for optimal delivery
Autoplay
Caption Support
Thumbnails
Analytics
At Protocol
Videos stored via AT Protocol for portability
Schedule BlueSky videos for maximum reach
Frequently Asked Questions
What's the maximum video length on BlueSky?
Videos can be up to 3 minutes (180 seconds) long on BlueSky, expanded from the initial 60-second limit in 2024.
What video format should I use for BlueSky?
MP4 with H.264 video codec. Keep files under 100MB for successful uploads. A single video per post is supported.
Can I add both a video and images to a single BlueSky post?
No. Each BlueSky post can contain text only, up to 4 images, or 1 MP4 video. Images and video cannot be combined in the same post.
Are there any video upload requirements or limits?
Yes. Bluesky-hosted accounts must verify their email address before their first video upload. Bluesky also enforces a per-account daily ceiling of 25 videos or 10GB combined, whichever you hit first.
Do BlueSky videos autoplay?
Yes, videos autoplay in the feed but with sound muted by default. Users need to tap to unmute, so captions are recommended.
Recent Updates
Confirmed single MP4 video per post, up to 100MB. Images and video cannot be combined. Bluesky-hosted accounts must verify email before their first video upload; per-account daily ceiling of 25 videos or 10GB applies.
Migrated to evergreen URL structure. Verified all specifications current.
BlueSky maintains 3-minute video limit with improved compression
Video duration expanded from 60 seconds to 3 minutes
Native video support launched (previously 60 seconds max)
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