Remix Project Guide
In this guide you will learn:
- What a remix project is
- How the editor layout works
- Track types and asset management
- Subtitles, audio, and effects
- Export and common issues
1. What is a remix project?
A remix project is LinghuiAI’s professional video editing mode. It gives you a multi-track timeline so you can freely combine video, audio, subtitles, and more into a complete production.
How it differs from AI short-drama creation:
| Item | Remix Project | AI Short Drama Creation |
|---|---|---|
| Input | Existing video, audio, and image assets | Script + characters + storyboard |
| Workflow | Manual editing and free composition | AI-generated video |
| Best for | Re-editing, remix creation, and fine adjustments | Creating an AI short drama from scratch |
| Control | Full manual control frame by frame | AI-led with adjustable parameters |
2. Editor layout overview
The remix editor uses a professional multi-pane layout:
┌─────────────────────────────────────────────────────────┐ │ Top bar: project | save state | undo/redo | save | back │ ├──────────────┬──────────────────────────────────────────┤ │ │ │ │ Asset panel │ Video preview area │ │ (left) │ (real-time playback) │ │ │ │ ├──────────────┴──────────────────────────────────────────┤ │ │ │ Timeline editor │ │ Video track ▶ [clip1] [clip2] [clip3] │ │ BGM track ▶ [music━━━━━━━━━━━━] │ │ Voice track ▶ [voice1] [voice2] │ │ SFX track ▶ [sfx1] [sfx2] │ │ Subtitle ▶ [sub1] [sub2] [sub3] │ │ │ ├─────────────────────────────────────────────────────────┤ │ Bottom panel: subtitles | audio control | export │ └─────────────────────────────────────────────────────────┘
3. Step-by-step workflow
Create or open a project
Open /av-editor, then click “New Project” and enter a project name. The system creates five default tracks automatically.
Upload assets
Use the upload button in the left asset panel. Supported formats include video (MP4/WebM/MOV), audio (MP3/WAV/OGG), and images (JPEG/PNG/WebP/GIF). Maximum size: 500MB per file.
Drag assets onto tracks
Drag each asset to the right track: video or image to the video track, music to the BGM track, and effects to the SFX track. The editor identifies asset types automatically.
Adjust clips
Move: drag the clip to a new position
Trim: drag either edge to change duration
Split: click the clip with the middle mouse button
Delete: select the clip and press Delete
Add subtitles
Add subtitles manually from the bottom subtitle panel or use AI subtitle generation to recognize speech from video or voice tracks. Font, color, position, and animation are adjustable.
Adjust audio
Use the audio control panel to set track volume (0-200%), fade-in and fade-out (0-10 seconds), plus mute and solo modes.
Add transitions and filters
Select a clip to apply 16 transitions such as fades, slides, and zooms, plus 8 filter presets including vivid, vintage, and black-and-white.
Preview the result
Use the play button or press Space to preview the timeline. All tracks stay in sync, and you can drag the playhead to any point.
Export the video
Choose format (MP4/WebM/MOV/GIF) and quality (720p/1080p/4K) in the export panel, then export. Export cost: 1 credit per second.
4. Track types
| Track Type | Purpose | Supported Operations |
|---|---|---|
| Video Track | Place videos and images | Trim, transform, filters, transitions, keyframe animation |
| BGM Track | Place background music | Volume adjustment, fade in, fade out |
| Voice Track | Place dialogue and narration | Volume adjustment, fade in, fade out |
| SFX Track | Place sound effects | Volume adjustment, fade in, fade out |
| Subtitle Track | Place text subtitles | Style editing, animation effects |
5. Advanced features
5.1 Keyframe animation
After selecting a video clip, you can use keyframes for:
- Position animation - pan the frame
- Scale animation - zoom in or out
- Rotation animation - rotate the frame
- Opacity animation - fade in and out
Supported easing functions include linear, ease in, ease out, ease in-out, and Bezier curves.
5.2 Filter presets
The editor provides eight one-click filter presets:
5.3 Transition effects
There are 16 built-in transitions:
| Category | Effect |
|---|---|
| Basic | Fade, dissolve |
| Slide | Slide left, right, up, down |
| Wipe | Wipe left, right, up, down |
| Zoom | Zoom in, zoom out |
| Creative | Rotate, blur, pixelate |
5.4 AI subtitle generation
The editor can recognize speech from video or voice tracks and generate timeline-aligned subtitles automatically. Cost: 2 credits per use.
6. Shortcuts
| Action | Shortcut |
|---|---|
| Play / Pause | Space |
| Zoom timeline | Ctrl + Mouse Wheel |
| Horizontal scroll | Shift + Mouse Wheel |
| Split clip | Middle Mouse Click |
| Undo | Ctrl + Z |
| Redo | Ctrl + Shift + Z |
7. Credit usage
| Feature | Cost | Note |
|---|---|---|
| AI Subtitle Generation | 2 credits/use | Generate subtitles from recognized speech |
| Video Export | 1 credit/second | Calculated from exported duration |
Editing actions like uploading assets, adjusting clips, and adding effects do not consume credits. Only AI features and export do.
8. FAQ
Q: Which video formats are supported?
MP4, WebM, and MOV are supported. MP4 is recommended for the best compatibility.
Q: Is there a video length limit?
Each project supports up to 5 minutes of video. For longer work, split it into sections and combine them later.
Q: Which export quality options are available?
- 720p (1280x720) best for social sharing
- 1080p (1920x1080) high-definition and recommended
- 4K (3840x2160) ultra-high-definition with larger files
Q: What if AI subtitles are inaccurate?
You can manually edit subtitles in the subtitle panel. Clear audio with less background noise improves accuracy.
Q: How do I adjust the volume of one track?
Each track in the audio control panel has an independent volume slider (0-200%) plus fade settings.
Q: Where is project data stored?
Project data is saved in the cloud so you can continue editing from any device after signing in. Asset files are uploaded to cloud storage.
Q: Does the editor support undo?
Yes. Up to 50 undo and redo steps are supported. Use Ctrl+Z to undo and Ctrl+Shift+Z to redo.
9. Notes
File size limit
Each asset file can be up to 500MB. If a video is too large, compress it before uploading.
Browser compatibility
The latest Chrome or Edge is recommended. Some features may be limited in Safari and Firefox.
Save regularly
Although the system autosaves, it is still safer to click Save after important edits.
Aspect ratio settings
Supported ratios include 16:9, 9:16, 1:1, 4:3, and 3:4. Choose it when creating the project because it cannot be changed later.