Tech Rehearsal

Understanding Tech Rehearsal

Tech rehearsal is the critical phase where all production elements come together for testing and refinement. For LED wall productions, this is when content, timing, and integration are verified.

Tech Rehearsal Objectives

**Primary Goals:**

• Verify all content plays correctly
• Confirm source switching works
• Test timing of cued elements
• Adjust brightness/color for venue
• Verify backup systems function
• Train operators on show flow

LED-Specific Testing

**Content Verification:**

• All files play without errors
• Correct resolution and aspect ratio
• Color accuracy on actual display
• Motion content renders smoothly
• Text remains readable

**Source Testing:**

• All inputs recognized by processor
• Switching transitions clean
• Backup inputs ready
• IMAG cameras calibrated
• Computer sources display correctly

**Integration:**

• Lighting cues coordinate with video
• Audio sync verified
• Timecode triggers function
• Automation sequences safe

Tech Schedule Structure

**Block 1: Technical Verification**

• Individual element testing
• Source verification
• Basic functionality confirmed

**Block 2: Integration**

• Elements combined
• Cue sequences tested
• Timing refined

**Block 3: Run-Through**

• Full show execution
• Notes compiled
• Refinements made

**Block 4: Dress Rehearsal**

• Show conditions replicated
• Final confirmation
• Backup procedures tested

Common Tech Issues

**Content Problems:**

• Resolution mismatches
• Codec incompatibilities
• Missing files
• Aspect ratio errors

**Signal Issues:**

• Cable failures
• EDID conflicts
• Resolution negotiation
• Color space mismatches

**Timing Problems:**

• Latency in signal chain
• Cue timing off
• Timecode drift
• Sync issues between elements

Best Practices

**Preparation:**

• Pre-test all content before arrival
• Document all settings
• Create cue sheets
• Have backup files ready

**During Tech:**

• Take detailed notes
• Save settings after changes
• Test backup systems
• Photograph control surfaces

**Communication:**

• Clear headset communication
• Established standby/go protocol
• Production meeting for complex shows
• Notes distributed to all departments

Time Management

**Allow Buffer Time:** Tech always takes longer than expected. Build in:

• Setup verification time
• Problem-solving time
• Client review time
• Fine-tuning time

**Prioritization:** If time runs short: 1. Verify show-critical elements first 2. Test backup systems 3. Refine secondary elements 4. Document anything untested