Ijharul Islam
Bluesky now accepts videos up to 10 minutes long and up to 300 MB in size. It raised the length limit from 3 minutes in late August 2026, after lifting the file size limit from 100 MB to 300 MB earlier in the summer, and said uploads are now two to three times faster. Many guides and scheduling tools still quote the old 3-minute, 100 MB limits.
More on this topic: Video specs by platform, every guide in one place.
Here's the timeline, what 300 MB holds at common bitrates, and how to fit a longer or heavier video.
The short answer
Bluesky's video limit is 10 minutes and 300 MB per video, one video per post (as of the August 2026 update). 300 MB over 10 minutes averages 4 Mbps, which is enough for clean 1080p. A 10-minute video exported at about 3.5 Mbps video plus 128 kbps audio comes to about 272 MB. Older limits you may still see quoted: 60 seconds at launch (September 2024), then 3 minutes and 100 MB in 2025.
Key takeaways
- Current limit: 10 minutes and 300 MB per video.
- 300 MB ÷ 600 seconds = 4 Mbps average, so a full-length 1080p video needs a modest bitrate.
- Phone videos at 4K are usually too big; compress to 1080p or 720p first.
- Third-party Bluesky apps and self-hosted servers can set different limits.
- One video per post; split longer content or link to it.
What is the Bluesky video length limit?
The Bluesky video length limit is 10 minutes. Bluesky announced the increase from 3 minutes on its official account on 25 August 2026, as reported by Engadget, along with a file size limit of 300 MB and two to three times faster uploads. The limits have grown in steps:
| When | Length limit | File size limit |
|---|---|---|
| September 2024 (video launches) | 60 seconds | Not stated per file (25 videos or 10 GB a day) |
| 2025 (app version 1.99) | 3 minutes | 100 MB |
| June 2026 | 3 minutes | 300 MB |
| August 2026 (current) | 10 minutes | 300 MB |
Reports at the time also said Bluesky added multi-part uploads, so a large file is sent in pieces and an interrupted upload can resume. Because Bluesky runs on the AT Protocol, other apps that post to it can set their own limits; this page is about the official Bluesky app and website.
How big can a Bluesky video be?
A Bluesky video can be up to 300 MB. Size is bitrate times length, so the longer the video, the lower the bitrate it can use. Here's the highest total bitrate (video plus audio) that fits 300 MB at each length:
| Video length | Highest average bitrate for 300 MB | Good for |
|---|---|---|
| 1 minute | 40 Mbps | 4K or high-quality 1080p |
| 3 minutes | 13.3 Mbps | 1080p at 60 fps |
| 5 minutes | 8 Mbps | 1080p at 30 fps (YouTube's recommended rate) |
| 10 minutes | 4 Mbps | 1080p at a modest bitrate, or 720p |
Leave about 5% of headroom for the container and audio. For a 10-minute talk, 3.5 Mbps video and 128 kbps audio gives about 272 MB. Work out any combination with the free video bitrate calculator.
How do you make a video fit Bluesky's limits?
You make a video fit Bluesky by trimming it to 10 minutes or less, then compressing it if it's over 300 MB:
- Trim anything over 10 minutes, and any dead air, with the free video trimmer.
- Check the size. If it's over 300 MB, open it in the free video compressor. Light (up to 1080p, about 23 MB a minute) fits 10 minutes in about 230 MB; Smaller (720p, about 12 MB a minute) fits it in about 120 MB.
- Post it from the Bluesky app or website, and add alt text describing what happens in the video.
Both tools are free, runs in your browser and never uploads your file. The compressor takes files up to 500 MB and 10 minutes, which matches a Bluesky video exactly, and records in real time, so a 10-minute video takes about 10 minutes. More on compression: how to compress a video without losing quality.
| Source | Typical size of 10 minutes | Fits 300 MB? |
|---|---|---|
| Phone, 4K at 30 fps (about 50 Mbps) | about 3.7 GB | No: compress to 1080p or 720p |
| Phone, 1080p at 30 fps (about 16 Mbps) | about 1.2 GB | No: compress |
| Screen recording, 1080p (about 4 Mbps) | about 300 MB | Borderline |
| QuickVeed compressor, Light | about 230 MB | Yes |
| QuickVeed compressor, Smaller | about 120 MB | Yes |
Phone bitrates vary by model and settings; the table uses round figures to show the scale.
What format and shape should a Bluesky video be?
Bluesky's launch post listed MP4, MPEG, WebM and MOV as accepted formats. An MP4 with H.264 video and AAC audio is the safest choice, because every app and browser plays it. Bluesky shows both horizontal and vertical video; vertical 9:16 fills more of a phone screen, while 16:9 suits screen recordings and talks. If you post the same video to other networks, a 4:5 (1080×1350) crop is a good middle ground for feeds. The free video resizer converts between them without cropping anyone out.
If your recording is a WebM (some browsers and screen recorders make them), Bluesky takes it, but convert it to MP4 if you also post it elsewhere; what a WebM file is explains how.
Are there daily upload limits on Bluesky?
Bluesky set daily limits when video launched: its September 2024 announcement said each account could upload 25 videos or 10 GB of video a day, and that it might change those numbers. The posts and reports about the 2026 changes don't mention new daily figures, so treat 25 videos a day as the last published guide. For most accounts that's far more than they'll use; if you're scheduling a batch of clips, spread them over a few days.
The same launch post also said each post can contain one video, and listed MP4, MPEG, WebM and MOV as the accepted file types. Add alt text to the video too, which helps people using screen readers: describe what happens in the video in a sentence or two.
What if your video is longer than 10 minutes?
If your video is longer than 10 minutes, split it into parts and post them as a thread, or post a short clip with a link to the full version. For talks, podcasts and webinars, a 30-to-90-second highlight usually gets more replies than a long upload; see how long a podcast clip should be and how to turn a podcast into short clips.
| Video length | Parts of 10 minutes or less |
|---|---|
| 15 minutes | 2 (7:30 each) |
| 30 minutes | 3 |
| 1 hour | 6 |
How do Bluesky's limits compare with other networks?
Bluesky's 10 minutes is longer than X's 2 minutes 20 seconds for free accounts and shorter than YouTube's 15 minutes for unverified channels:
| Network | Length limit (free account) | Size limit |
|---|---|---|
| Bluesky | 10 minutes | 300 MB |
| X (Twitter) | 140 seconds | 512 MB |
| YouTube | 15 minutes (12 hours when verified) | 256 GB |
| 15 minutes | 5 GB |
Details: X video limits, YouTube's video length limit and LinkedIn video specs. The free social media video size guide keeps them on one page.
Frequently asked questions
How long can a video be on Bluesky?
Up to 10 minutes, since Bluesky's August 2026 update. Before that, the limit was 3 minutes.
What is Bluesky's video file size limit?
300 MB per video, up from 100 MB earlier in 2026.
Can I post more than one video in a Bluesky post?
No. A post can hold one video.
Why does my Bluesky app say the video is too long?
An older app version may still apply the 3-minute limit. Update the app, or check whether you're using a third-party client with its own limits.
What bitrate should I use for a 10-minute Bluesky video?
About 3.5 Mbps video and 128 kbps audio, which comes to roughly 272 MB.
How does Bluesky's limit compare with Threads?
Threads allows longer videos: Meta's Threads developer documentation lists up to 5 minutes and 1 GB per video, against Bluesky's 10 minutes and 300 MB. See the Threads video length limit for the full specs.
Does Bluesky compress videos?
Bluesky processes uploaded videos for streaming, so upload a clean MP4 at a sensible bitrate rather than an over-compressed one.
Try it with your own video
Cut long videos into captioned clips for Bluesky, X, Reels and Shorts. Upload a recording, pick moments, and caption them in any language. QuickVeed plans start at $18/month, and new accounts get a 14-day trial with 250 credits, no card needed. Sign up or see pricing.
Sources
Competitor details in this post were checked against these public pages in October 2026. Products and prices change, so confirm with each vendor before you decide.
