Investigation Video Enhancement Playbook

Investigation Video Types

Type	Source	Challenges
Covert surveillance	Hidden cameras, vehicle-mounted	Angles, distance, movement
Long-range observation	Telephoto, fixed position	Atmospheric interference, zoom
Night/low-light	IR cameras, low-light sensors	Noise, grain, no color
Security footage	CCTV, access points	Low resolution, compression
Dashcam/bodycam	Vehicle, wearable	Motion, varied lighting

Enhancement for Identification

Face Enhancement

Key use case: identifying individuals from poor footage.

# Maximum face restoration settings
response = bettervideo.enhance(
    video_url=surveillance_url,
    resolution="4k",
    face_restoration=True,
    face_strength="maximum"
)

What Enhancement Can Do

• Recover facial detail from low resolution
• Reduce noise obscuring features
• Sharpen blurred faces
• Improve lighting on shadowed faces

What Enhancement Cannot Do

• Create detail that doesn't exist
• Identify someone from a few pixels
• Guarantee identification
• Replace forensic video analysis

Enhanced video is an aid to identification, not definitive proof.

Evidence Handling Workflow

1. SECURE ACQUISITION
   - Document source, time, location
   - Calculate hash immediately
   - Preserve original in evidence locker

   original_hash = sha256(footage)
   log_evidence("acquired", {
       source: camera_id,
       location: gps,
       timestamp: capture_time
   })

2. CREATE WORKING COPY
   - Never process original
   - Copy to working directory
   - Document copy creation

3. ENHANCE
   response = bettervideo.enhance(
       video_url=working_copy_url,
       resolution="4k",
       face_restoration=True
   )

4. DOCUMENT ENHANCEMENT
   enhancement_log = {
       original_hash: original_hash,
       enhanced_hash: sha256(enhanced),
       operations: response.processing.operations,
       timestamp: response.completed_at,
       certificate: response.certificate_url
   }

5. CHAIN OF CUSTODY
   - Both versions stored with case
   - Documentation attached
   - Ready for legal proceedings if needed

Covert Footage Optimization

Common Covert Camera Issues

• Wide-angle distortion: Small cameras use fisheye lenses
• Poor stabilization: Vehicle-mounted cameras shake
• Compression artifacts: Limited storage means heavy compression
• Rolling shutter: Fast movement causes distortion

Enhancement Settings

# Covert camera enhancement
response = bettervideo.enhance(
    video_url=covert_footage_url,
    resolution="1080p",    # Don't upscale too far
    denoise="strong",      # Heavy denoising
    sharpen=True,          # Recover detail
    face_restoration=True  # If subjects visible
)

Best Practices

• Process entire footage, not just clips
• Mark timestamps of interest
• Export both versions with report
• Note enhancement in investigation report

Working with Law Enforcement

If Evidence Goes to Police

• Provide original and enhanced
• Provide chain of custody documentation
• Explain enhancement methodology
• Offer expert witness support if needed

Police Department Requests

If police request enhancement:

• Follow their evidence handling procedures
• Get written request documenting chain of custody
• Provide full documentation of enhancement
• Return both versions

Court Testimony

If testifying about enhanced video:

• Describe enhancement process
• Explain what enhancement can/cannot do
• Reference BetterVideo methodology documentation
• Present both original and enhanced