Learn about the file requirements for uploading content to Hedra.
File Size Limits
The maximum file size for any file type is 10MB. This includes audio files as well as images.
Audio Files
| Format | Supported |
|---|
| .wav | Yes |
| .mp3 | Yes |
Ensure you use these file types for maximum compatibility.
Audio Length Limits
| Plan | Maximum Length |
|---|
| Free | 20 seconds |
| Premium | 5 minutes |
Image Files
Recommendations
For best results with Character-3:
- Use clear, front-facing portraits
- Ensure good lighting
- Minimum recommended size: 512x512 pixels
- Avoid objects in hands (can cause issues in longer videos)
Video Output
Available Resolutions
| Resolution | Notes |
|---|
| 540p | Budget-friendly option (uses fewer credits) |
| 720p | Standard quality |
| 1080p | Available with select models (Kling 2.1 Master) |
Aspect Ratios
- 16:9 (Landscape)
- 9:16 (Portrait)
- 1:1 (Square)
Match your output aspect ratio to your source image dimensions for optimal results.
