QC methods
One page per check. Each describes what the measurement is, the standard that defines it, and which fields of your delivery spec resolve the thresholds. Every check on a job report links to its method page here.
Audio clicks pops
Audio click / pop event count
Audio dialnorm
DialNorm metadata validation (AC-3 / E-AC-3)
Audio dual mono
Dual-mono detection per stereo track
Audio format
Audio codec / sample rate / bit depth
Audio language detected
Spoken-language identification
Audio loudness range
Loudness range (LRA), EBU R128
Audio loudness speech gated
Speech-gated integrated loudness (ATSC A/85 dialogue measurement)
Audio phase coherence
Stereo phase coherence per track
Audio quasi peak
Quasi-peak programme metre (PPM), IEC 60268-10
Audio silence
Per-channel silence intervals
Audio tracks
Audio track count + role configuration
A/V sync drift
A/V sync drift, audio onset vs video luma transition
Black frames
Black-frame intervals (full-file scan)
Channel layout
Channel layout per audio track
Character count
Subtitle total character count
Clipping
True peak clipping count
Combing
Interlace combing detection
Container
Container format vs spec allowlist
Content burnt in text
Burnt-in / on-screen text detection (vision model)
Content credit roll
End-credit roll detection (tail window)
Content embedded URL
Embedded URL detection (vision model)
Content explicit
Scene explicit-content rating (vision model)
Content FBI warning
FBI warning / anti-piracy notice detection
Content logo
Station / network logo / bug detection
Content prohibited keywords
Prohibited-keyword detection (audio transcript)
Content QR code
QR code detection on sampled frames
Content rights watermark
Rights / watermark / Bloomberg-style screen-watermark detection
Content scene classification
Scene genre / content-type classification
Content slate fields
Slate field extraction + spec match
Content slate present
Slate frame presence (head window)
Content strong language
Strong language detection (audio transcript)
Content violence
Scene violence rating (vision model)
Cue gaps
Minimum gap between adjacent cues
Duration
File duration
Duration vs video
Sidecar audio duration vs primary video
Frame rate
Frame rate vs spec allowlist
Frame rate match
Subtitle frame rate vs video frame rate
Frozen frames
Frozen-frame intervals (full-file scan)
GOP structure
GOP structure / I-frame interval
HDR
HDR transfer / primaries / mastering metadata
IMF package conformance
IMF package conformance, SMPTE ST 2067
IMSC subtitle conformance
IMSC1 / IMSC1.1 subtitle conformance, W3C TTML2
Language tag
Audio stream language tag (ISO 639)
Line count
Subtitle total line count
Loudness
Integrated programme loudness, EBU R128 / ITU-R BS.1770-4
LTC VITC
LTC / VITC sidecar timecode
Min cue duration
Subtitle minimum cue duration
MXF structural conformance
MXF structural conformance, SMPTE ST 377-1
Pixel format
Pixel format / chroma subsampling
Pkg audio loudness divergence
Inter-component loudness consistency
Pkg audio uniqueness
Inter-component audio uniqueness (anti-duplicate)
Pkg duration match
Package component duration consistency
Pkg language consistency
Inter-component language consistency
Pkg required audio
Required audio components present
Pkg subtitle dialogue coverage
Subtitle dialogue coverage vs audio silence
PSE preliminary
PSE preliminary fast-screen (pre BT.1702)
PSE strict
Photosensitivity epilepsy analysis, ITU-R BT.1702-3 (SDR only)
Resolution
Frame resolution vs spec allowlist
Scan type
Scan type (progressive / interlaced)
Segment marker accuracy
Segmentation marker accuracy (region-typed routing)
Sidecar metadata conformance
Sidecar metadata conformance & reconciliation
Signal range
Luma signal range, full-file signalstats
Start timecode
Start timecode (container or stream tag)
Subtitle encoding
Subtitle file character encoding
Subtitle extended chars
Subtitle extended-character / smart-character ban
Subtitle format
Subtitle format vs spec allowlist
Subtitle max duration
Subtitle cue maximum display duration
Subtitle reading speed
Subtitle reading speed (characters per second)
Test signal bars duration
Colour-bars duration conformance
Test signal slate duration
Slate / clock duration conformance
Test signal tone frequency
Line-up tone frequency conformance
Test signal tone level
Line-up tone level conformance
Timecode continuity
Packet PTS monotonicity + gap detection
Timing range
Subtitle timing range vs programme duration
Video active region shift
Active picture region centring
Video aliasing
Aliasing / staircase artefact (high-frequency ratio)
Video blockiness
Macroblock / compression blockiness score
Video blurriness
Image blurriness (Laplacian variance)
Video captions present
Closed captions (CEA-608 / 708) presence
Video codec
Video codec vs spec allowlist
Video colour banding
Colour banding detection
Video colour bars
Colour-bars detection (head window only)
Video dead pixels
Dead / stuck pixel detection
Video decode errors
Decode errors / corrupt packets
Video dropouts
Single-frame dropout intervals
Video dropped frames
Dropped frames vs declared frame rate
Video ghosting
Ghosting / frame-blend correlation
Video image tilting
Image tilt angle (Hough-line dominant direction)
Video mosquito noise
Mosquito-noise score (compression edge noise)
Video pulldown judder
3:2 / 2:2 pulldown judder
Video ringing
Ringing artefact score
Video shot transitions
Shot-transition count per minute