GM Tags

These tags are extracted from GM/Cosworth PDR (Performance Data Recorder) information found in videos from General Motors cars such as Corvette and Camero.

Use the API PrintCSV option to output all timed PDR data in CSV format at greatly increased speed and with much lower memory usage. This option prints the numerical values for each channel in CSV format, suitable for import into RaceRender. In this output, the gear numbers for Neutral and Reverse are changed to -1 and -100 respectively for compatibility with RaceRender.

GM marl Tags

Tags extracted from the 'ctbx' 'marl' (Marlin) box of timed PDR metadata from GM cars. Use the -ee (API ExtractEmbedded) option to extract this information, or the API PrintCSV option to output in CSV format.

Tag Name Writable Values / Notes

ABSActive no

AccelPos no

BatteryVoltage no

Beacon no

BoostPressureInd no

BrakePos no

CPUFree no

CPUIO no

CPUIRQ no

CPUSystem no

CPUUser no

ClutchPos no

CoolantTemp no

CornerExitSetting no

DiskReadOperations no

DiskReadRate no

DiskReadTime no

DiskWriteOperations no

DiskWriteRate no

DiskWriteTime no

Distance no

DriverPerformanceMode no

EngineSpeedRequest no

EngineTorqureReq no

FuelCapacity no

FuelLevel no

GPSAltitude no

GPSDateTime no (generated from the TimeStamp only if specifically requested)

GPSFix no

GPSLatitude no

GPSLongitude no

GPSTrack no

Gear no (in the PrintCSV output, the value for Neutral is set to -1, and Reverse to -100 for compatibility with RaceRender)
1 = 1
2 = 2
3 = 3
4 = 4 5 = 5
6 = 6
13 = N
14 = R

InfotainOpMode no

IntakeAirTemperature no

IntakeBoostPressure no

LFTyrePressure no

LFTyreTemp no

LRTyrePressure no

LRTyreTemp no

LateralAcceleration no

LongitudinalAcceleration no

OilPressure no

OilTemp no

OutsideAirTemperature no

RFTyrePressure no

RFTyreTemp no

RPM no

RRTyrePressure no

RRTyreTemp no

RecordingEventOdometer no

Speed no

SpeedControlResponse no

SpeedRequestIntervention no

Steering1Switch no

Steering2Switch no

SteeringAngle no

SuspensionDisplacementLeftFront no

SuspensionDisplacementLeftRear no

SuspensionDisplacementRightFront no

SuspensionDisplacementRightRear no

SystemBackupPowerEnabled no

SystemBackupPowerMode no

SystemPowerMode no

TimeStamp no (the numerical value is seconds since start of video, but the print conversion adds StartTime to provide a date/time value. Extracted as GPSDateTime if requested)

TractionControlActive no

TransOilTemp no

TransportStorageMode no

ValetMode no

VehicleStabilityActive no

VerticalAcceleration no

WheelspeedLeftDriven no

WheelspeedLeftNon-Driven no

WheelspeedRightDriven no

WheelspeedRightNon-Driven no

YawRate no

GM mrld Tags

The Marlin dictionary. Only one channel is listed but all available channels are extracted. Use the -struct (API Struct) option to extract the channel information as structures.

Tag Name Writable Values / Notes

Channel01 struct --> GM Channel Struct

Channel01Description no_ (channel description)

Channel01DispMax no_ (displayed value maximum)

Channel01DispMin no_ (displayed value minimum)

Channel01Flags no_ (channel flags)

Channel01ID no_ (channel ID number)

Channel01Interval no_ (measurement interval)

Channel01Max no_ (raw value maximum)

Channel01Min no_ (raw value minimum)

Channel01Multiplier no_ (multiplier for raw value)

Channel01Name no_ (channel name)

Channel01Num no_ (units ID number)

Channel01Offset no_ (offset for scaled value)

Channel01Type no_ (measurement type)

Channel01Units no_ (units string)

GM Channel Struct

Information stored for each channel in the Marlin dictionary.

Field Name Writable Values / Notes

ID no (channel ID number)

Type no (measurement type)

Num no (units ID number)

Units no (units string)

Flags no (channel flags)

Interval no (measurement interval)

Min no (raw value minimum)

Max no (raw value maximum)

DispMin no (displayed value minimum)

DispMax no (displayed value maximum)

Multiplier no (multiplier for raw value)

Offset no (offset for scaled value)

Name no (channel name)

Description no (channel description)

GM mrlh Tags

The Marlin PDR header.

Index1 Tag Name Writable Values / Notes

0 MarlinDataVersion no

GM mrlv Tags

Tags found in the 'mrlv' (Marlin values) box.

Tag ID Tag Name Writable Values / Notes

'date' Date1 no

'lang' Language no

'ldat' Date2 no

'ltim' Time2 no

'swvs' SoftwareVersion no

'time' Time1 no

'tstm' StartTime no

'unit' Units no 'usim' = U.S. Imperial

'zone' TimeZone no

(This document generated automatically by Image::ExifTool::BuildTagLookup)
Last revised Apr 18, 2024

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