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: 600 seconds
Up to 10 minutes (Bluesky raised the limit from 3 minutes in August 2026)
Important Notes
BlueSky launched native video in September 2024 with a 60-second limit, raised it to 3 minutes in March 2025 and to 10 minutes in August 2026. Each post can include one video (up to 300MB) OR up to 10 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 10 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 300MB
- ✓Hook viewers in first 3 seconds
Sources & Verification
Last verified: 2026-09-25
Up to 10 minutes (600s) per video, 300MB cap, .mp4/.mov/.webm/.mpeg accepted, subtitles can be attached. 1 video OR up to 10 images per post (mutually exclusive). The 10-minute, 300MB and 10-image limits come from Bluesky's own announcements on its official @bsky.app account (2026). 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 10 minutes (600 seconds) long on BlueSky. The limit was 60 seconds at launch in September 2024, 3 minutes from March 2025 and 10 minutes from August 2026.
What video format should I use for BlueSky?
MP4 with H.264 is the safest choice, and Bluesky also accepts .mov, .webm and .mpeg files. Keep files under 300MB. 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 10 images, or 1 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
Updated to Bluesky's 2026 limits: videos up to 10 minutes and 300MB, .mov/.webm/.mpeg accepted alongside .mp4, subtitle files supported, and up to 10 images when a post has no video.
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)
Related Specifications
BlueSky Posts
Complete guide to BlueSky post dimensions, character limits, and media specifications. Create engaging posts on the decentralized social network with perfect formatting. Updated for 2026.
X (Twitter) Video
Complete guide to X (Twitter) video dimensions, duration limits, and technical specifications. Upload videos with the perfect format for maximum engagement. Updated for 2026.