Videos

Learn how to create and schedule posts with videos in Chronosky.

Overview

Chronosky lets you attach videos to your scheduled posts. You can schedule posts with videos captured on your smartphone, screen recordings, and more.

Video Post Features

• Multiple Formats Supported: Supports MP4, MPEG, WebM, and MOV (QuickTime) formats
• Up to 100MB: Upload even larger files
• Up to 3 Minutes: Maximum video duration per Bluesky specifications
• Alt Text Support: Add alternative text for accessibility

INFO

Videos and images cannot be attached together

You cannot attach both a video and images to a single post. If you attach a video, image attachment is disabled. Likewise, if you attach images, you cannot attach a video.

Uploading a Video

Step 1: Access the New Post Form

Click the "New Post" button from the dashboard.

Step 2: Add a Video

There are two ways to add a video:

Method 1: Drag & Drop

1. Select a video file from your computer
2. Drag it to the video area in the post form
3. Drop to upload the video

Method 2: File Selection

1. Click the video icon in the post form
2. A file selection dialog will open
3. Select the video you want to upload
4. Click "Open"

TIP

Supported Formats

Supported video file formats:

• MP4 (.mp4) — Most widely supported
• MPEG (.mpeg, .mpg)
• WebM (.webm)
• MOV / QuickTime (.mov) — Files captured on iPhone and similar devices

Step 3: Preview Confirmation

The uploaded video is displayed in the post form.

Elements shown:

1. Video duration — Length of the video (seconds)
2. Remove button — × button to remove the video
3. Add Alt Text button — Add alternative text

Step 4: Add Alt Text (Recommended)

Alt text is a description for users who cannot view the video. It is recommended to add it for better accessibility.

How to add alt text:

1. Click the "Alt" button on the video preview
2. An alt text input field will appear
3. Briefly describe the content of the video
4. Click "Save"

Alt text examples:

Bad example: "video"
Good example: "A 30-second video of cherry blossom petals dancing in the wind"

Bad example: "screen recording"
Good example: "Screen recording showing how to upload a video in Chronosky's new post form"

Step 5: Select Schedule Time

Video posts can be scheduled just like regular posts.

Step 6: Review and Schedule

Before scheduling, check the following:

Checklist:

• ✅ Video is correctly uploaded
• ✅ Video duration is 3 minutes or less
• ✅ File size is 100MB or less
• ✅ Post content is correct
• ✅ Schedule time is correct (at least 5 minutes from now)

Click the "Schedule Post" button to schedule your video post.

Video Limits

Item	Limit
Max File Size	100MB
Max Duration	3 minutes (180 seconds)
Supported Formats	MP4, MPEG, WebM, MOV (QuickTime)
Videos per Post	1
Combined with Images	Not allowed (mutually exclusive)

INFO

Bluesky Video Limits

The 3-minute duration limit is per Bluesky's specifications. Videos exceeding this cannot be uploaded.

Videos in Thread Posts

In thread posts, each post (parent or child) can have its own video attached.

Example thread with videos:

Post 1 (parent):

Here's the event digest video! (1/2)

(Video 1 attached)

Post 2 (child):

More scenes coming your way. (2/2)

(Video 2 attached)

Troubleshooting

Common Issues

Cannot Upload Video

Symptoms:

• Selecting a file doesn't add the video
• An error message appears

Common causes:

• Unsupported file format (e.g. AVI, WMV, MKV)
• File size exceeds 100MB
• Video duration exceeds 3 minutes

Solutions:

1. Check file format

   • Convert to MP4, MPEG, WebM, or MOV and try again
   • Use a free conversion tool like HandBrake

2. Check file size

   • Compress to under 100MB
   • Export with lower quality in a video editor

3. Check video duration

   • Split the video if it exceeds 3 minutes

Want to Attach Both Video and Images

Symptoms:

• Image button becomes disabled when a video is attached

Explanation:

Per Bluesky's specifications, a single post cannot have both a video and images attached.

Solution:

• Use thread posts to attach videos and images in separate posts

Best Practices

Video Quality

1. Appropriate resolution

   • HD (1280×720) or higher recommended
   • Unnecessarily high resolution increases file size

2. Choosing a file format

   • MP4 is the most commonly used and recommended format
   • MOV files captured on iPhone can be used as-is

3. Optimizing file size

   • Edit to fit within the 100MB limit
   • Compress using a video editor if needed

Using Alt Text

1. Write specific descriptions

   • Clearly describe what's in the video
   • Avoid vague expressions like "video" or "file"

2. Appropriate length

   • Summarize in 1–2 sentences
   • No need to make it excessively long

Combining with Post Content

1. Add a description of the video

   • Briefly describe the video in text
   • Help viewers understand the content before watching

2. Appropriate hashtags

   • Use hashtags related to the video
   • Increase engagement

Next Steps

Now that you've learned how to create video posts, explore more features:

• Image Posts - Use images instead of videos
• Link Cards - Create posts with link previews
• Thread Posts - Schedule multiple posts in sequence

FAQ

Q: What video formats are supported?

A: MP4, MPEG, WebM, and MOV (QuickTime) formats are supported. Formats such as AVI and WMV are not supported, so please convert them beforehand.

Q: Is there a file size limit for videos?

A: Yes, the maximum is 100MB. Files exceeding this limit cannot be uploaded.

Q: Is there a duration limit for videos?

A: Per Bluesky's specifications, the maximum is 3 minutes (180 seconds). Videos exceeding this should be split and posted as thread posts.

Q: Can I attach multiple videos to one post?

A: No, only one video can be attached per post. Use thread posts to post multiple videos.

Q: Can I attach both a video and images to the same post?

A: No, per Bluesky's specifications, video and images cannot be attached to the same post. Use thread posts to attach them in separate posts.

Q: Can I use videos recorded on my smartphone directly?

A: Yes, MOV files recorded on iPhone and most MP4 files recorded on Android smartphones can be used directly. Please be aware of the file size and duration limits.