TC-Off: Timecode Offset Editor for Resolume Arena

Professional Timecode Management for Live Video Productions

TC-Off is a specialized editor for Resolume Arena compositions, designed to streamline timecode synchronization workflows for live events, concerts, and installations. Whether you're syncing video to SMPTE timecode, ShowKontrol audio playback, or Denon/Pioneer DJ systems, TC-Off provides the precision tools you need.

Key Features

Composition Editing

• Bulk Offset Management - Edit timecode offsets for hundreds of clips simultaneously
• Find & Replace - Quickly update offsets across your entire composition or filtered selections
• Multi-Deck Support - Work with multiple decks and layers in complex compositions
• Transport Type Switching - Change between Timeline, BPM Sync, SMPTE, Denon DJ, and Pioneer DJ modes while preserving your offset values

ShowKontrol Integration

• Automated Setlist Export - Generate ShowKontrol .set files directly from your Arena composition
• Flexible OSC Configuration - Choose between clip triggers, deck selection, or both
• Intelligent Path Mapping - Automatic audio file path generation with volume name support
• Custom Audio Mapping - Mac users can Cmd+Click to browse and select specific audio files for any clip

Workflow Efficiency

• Wildcard Search - Find clips quickly using * and ? wildcards in large compositions
• Visual Filtering - Filter by transport mode, deck, or clip name
• Sortable Columns - Sort by any column (deck, layer, name, offset, transport type)
• Real-Time Preview - See your changes instantly in the table view with color-coded offset indicators

Documentation & Export

• PDF Export - Create professional documentation with color-coded offset tables
• CSV Export - Share clip lists and offsets with other departments
• XLS Export - Open in Excel or Numbers for further analysis or reporting
• Multiple Export Formats - Choose the format that works for your team

Data Safety

• Unsaved Changes Warning - Never lose work with automatic change detection
• ShowKontrol Export Reminder - Warned if you've configured ShowKontrol paths but haven't exported
• Non-Destructive Editing - Original Resolume data is always preserved (clip durations, video settings, effects)
• Version Tracking - Built-in save timestamp notes help track composition versions

How It Works

For ShowKontrol Users

Complete Workflow:

1. Prepare Your Media
   • Create DXV video files and WAV audio files
   • Use identical filenames for matching video/audio pairs (e.g., Song01.mov and Song01.wav)
2. Set Up in Resolume Arena
   • Load your video clips into Arena
   • Arrange clips in your desired layout (decks, layers, columns)
   • Set playback mode to SMPTE for timecode sync
   • Save your composition
3. Configure TC-Off
   • Launch TC-Off and verify the frame rate matches your project (23.976, 24, 25, 29.97, 30, etc.)
   • Set the ShowKontrol wav base path (the folder containing your audio files)
     • Mac users: Use the Browse button to select your audio folder
     • Path must be accessible on your ShowKontrol Mac
4. Load and Edit
   • Open your Resolume composition in TC-Off
   • Review the clip list - all clips are displayed in an organized table
   • Set timecode offsets as needed:
     • Enter offsets manually in HH:MM:SS:FF format
     • Use Find & Replace for bulk changes
     • Filter to specific decks or transport modes before editing
5. Configure Audio Mapping
   • Review the ShowKontrol wav path column
   • If auto-generated paths are correct (matching filenames), you're done
   • For mismatched names: Mac users can Cmd+Click any path cell to browse and select the correct audio file
   • Paths automatically include volume names for proper ShowKontrol compatibility
6. Export ShowKontrol Setlist
   • Click "Export ShowKontrol..."
   • Configure OSC options:
     • None - No OSC commands (manual triggering)
     • Clip Trigger - OSC commands to trigger specific clips
     • Deck Select - OSC commands to select decks
     • Both - Complete automation with deck and clip control
   • Choose M field, A/B field, or both for OSC command placement
   • Save the .set file
7. Finalize
   • Save your modified composition in TC-Off (creates a new .avc file)
   • Reload the composition in Resolume Arena
   • Open ShowKontrol and load your .set file
   • Open and save each item in ShowKontrol to generate waveforms
   • Test your show!

For General Timecode Editing

Quick Edit Workflow:

1. Open your Arena composition
2. Filter clips by deck or transport type
3. Edit offsets in the table or use Find & Replace
4. Save your updated composition
5. Reload in Arena - changes are applied immediately

Powerful Features in Detail

Smart Filtering

By Transport Mode:

• Timeline (free running)
• BPM Sync (beat-synced)
• SMPTE / SMPTE Free (timecode)
• Denon DJ (StageLinQ)
• Pioneer DJ (Pro DJ Link)

By Deck:

• View all decks or filter to specific deck
• Quick deck switching for large compositions
• Deck names displayed from your composition

By Name:

• Use wildcards: Song* finds Song01, Song02, etc.
• Pattern matching: Intro_? finds Intro_A, Intro_B, etc.
• Case-insensitive search
• Results counter shows matches

Find & Replace

Bulk offset changes made easy:

• Find: Enter the current timecode (e.g., 00:00:00:00)
• Replace: Enter the new timecode (e.g., 00:00:05:00)
• Scope: Apply to all clips or visible (filtered) clips only
• Instant: Changes apply immediately to all matches
• Safe: Only affects clips with matching offsets exactly

Example: Change all clips starting at 00:00:10:00 to start at 00:00:12:00 with one click.

Inline Editing

Edit directly in the table:

• Clip Name - Click to edit (updates in Arena composition)
• Timecode Offset - Click to edit, uses HH:MM:SS:FF format
• Transport Type - Click to change (Timeline, BPM, SMPTE, Denon, Pioneer)
• ShowKontrol Wav Path - Click to edit manually, or Cmd+Click to browse (Mac only)

All changes are tracked - you'll be warned before quitting if you have unsaved changes.

Color-Coded Offset Display

Visual offset indicators help you spot clips with common offsets:

Export Options

PDF Export:

• Professional table layout
• Color-coded offsets match screen display
• Clip names, transport types, timecodes
• Perfect for:
  • Production documentation
  • Sharing with technical directors
  • Archive records
  • Client deliverables

CSV Export:

• Tab-delimited format
• All clip data included
• Compatible with any spreadsheet software
• Great for:
  • Data analysis
  • Custom processing
  • Integration with other tools

XLS Export:

• Native Excel format
• Formatted columns
• Ready to use in Excel or Numbers
• Ideal for:
  • Budget tracking (match clips to licensing)
  • Reporting to producers
  • Tour documentation

ShowKontrol .set Export:

• Complete setlist with audio paths
• OSC command configuration
• Volume name compatibility
• Ready to load in ShowKontrol

Platform Support

macOS:

• Full feature set including Browse buttons
• Cmd+Click audio file selection
• Native file dialogs
• Volume name detection for ShowKontrol paths
• Tested on macOS 10.15+

Windows:

• Core editing features (ShowKontrol paths must be manually set )
• Full composition editing
• PDF/CSV/XLS export
• Tested on Windows 10+

Technical Details

File Compatibility

• Input: Resolume Arena 7.x composition files (.avc)
• Output: Modified .avc files compatible with Arena
• Preserves: All Resolume data (effects, transitions, sources, routing)
• Modifies: Only offset values, transport types, and clip names
• Safe: Non-destructive editing - original data always preserved

Frame Rate Support

Full support for all standard Resolume frame rates:

• 24 fps (film)
• 25 fps (PAL)
• 29.97 fps (NTSC drop-frame)
• 30 fps (NTSC non-drop)

Timecode display and calculations are frame-accurate for all rates.

Safety Features

Data Protection

• Unsaved Changes Warning - Prompted before closing if you have unsaved composition edits
• ShowKontrol Export Reminder - Warned if you've set up ShowKontrol paths but haven't exported the .set file
• Dual Warnings - Both checks ensure no work is lost
• Error Handling - File save errors are reported (disk full, permissions, etc.)

Data Preservation

• Clip Duration - Always preserved from Resolume (never overwritten)
• Video Settings - Width, height, scaling settings intact
• Effect Chains - All effects and parameters preserved
• Source Files - File paths and references unchanged
• Routing - Layer blending and output routing maintained

Workflow Safety

• Save As Recommended - Encourages creating new files rather than overwriting
• Timestamp Notes - Automatic save timestamps in composition notes.

Getting Started

System Requirements

macOS:

• macOS 10.15 Catalina or later
• 64-bit Intel or Apple Silicon
• 50 MB disk space

Windows:

• Windows 10 or later
• 64-bit x86
• 50 MB disk space

Quick Start Guide

1. Download TC-Off for your platform
2. Install - No complex setup, just run the application
3. Open a Resolume Arena composition (.avc file)
4. Edit offsets in the table or use Find & Replace
5. Save your changes (Save As recommended)
6. Reload the composition in Arena

For ShowKontrol users, see the complete workflow above.

Support & Feedback

Found a Bug?

TC-Off is actively developed and maintained. If you encounter issues:

Email: tc-off@tombassford.org

Please include:

• What you were doing when the issue occurred
• Your operating system and TC-Off version
• Sample .avc file if possible (helps with debugging)

Feature Requests

Have an idea for improvement? I'd love to hear it!

Email: tc-off@tombassford.org

FAQ

Does TC-Off modify my original Arena composition?

Only if you save over it. TC-Off loads your .avc file, lets you edit it, and saves a new file when you use "Save As". Your original file remains unchanged unless you explicitly save over it. We recommend always creating new files with dated names: MyShow_2026-02-01.avc

Will my effects and sources be preserved?

Yes! TC-Off only modifies:

• Timecode offsets
• Transport types (if you change them)
• Clip names (if you edit them)

Everything else (effects, sources, routing, layers, transitions, parameters) is completely preserved.

Can I use this with Resolume Avenue?

TC-Off is designed for Arena which is required for timecode support.

Do I need ShowKontrol to use TC-Off?

No! TC-Off is useful for any timecode editing workflow. ShowKontrol features are optional - you can use TC-Off just for editing offsets, transport types, and exporting documentation.

What if my audio files have different names than video files?

No problem! Mac users can Cmd+Click the ShowKontrol wav path column to browse and select the correct audio file for each clip. The path is automatically formatted with the volume name for ShowKontrol compatibility.

Can I edit clips while Arena is running?

TC-Off works with the .avc file, not the running Arena instance. Edit in TC-Off, save the composition, then reload it in Arena to see your changes.

How do I bulk-change offsets for an entire deck?

1. Use the Deck filter to show only that deck
2. Use Find & Replace to change offsets
3. Check "Visible Only" to affect only the filtered clips
4. Changes apply to all matching clips in that deck

Credits

Developed by: Tom Bassford
Contact: tc-off@tombassford.org
Compatible with: Resolume Arena 7.x

TC-Off is an independent tool for Resolume Arena and is not affiliated with or endorsed by Resolume nor ShowKontrol.

Resolume and Arena are trademarks of Resolume.

ShowKontrol is a trademark of TC-Supply