Adding Media to Posts

The composer has three tabs for attaching media to your posts. You can mix and match — select files from any tab.

Tab 1: Upload File

Upload files directly from your computer.

• Supported formats: Images (JPG, PNG, GIF, WebP) and Videos (MP4, MOV, AVI, WebM, MKV, FLV, WMV)
• Maximum size: 150MB per file
• Multiple files: You can upload several files at once
• How to use: Click the upload area or drag and drop files. Uploaded files show as thumbnails — click the trash icon to remove any file

Tab 2: My Files

Browse and reuse files you've previously uploaded to Chatmu.

• Shows your 50 most recent files
• Click any file to select it (pink checkmark appears)
• Click again to deselect
• Supports both images and videos

Tab 3: Chatmu Create

Attach videos you've generated using Chatmu Create.

• Shows videos created in the last 72 hours
• Videos are displayed in portrait (9:16) format
• Each video is labeled "Chatmu Create"
• Same selection behavior as My Files

Removing Media

• Uploaded files: Hover over the thumbnail and click the trash icon
• File library / Create videos: Click the selected item again to deselect

Tips

• For YouTube posts, you must attach a video file
• You can attach both images and videos to the same post
• Selected media from all tabs is combined into your final post