LDT-A and LDT-M Series inject frame by frame lens metadata into the ARRIRAW files. This guide gives a breakdown on how the metadata can be extracted, where the LDT's phase its data, how they are stored and where they can be found.
The metadata are collected as dynamic metadata, meaning each individual frame of any clip will have accurate FIZ data associated with it. Depending on which format is being used, the output file consists of a table of cells arranged into rows and columns and referred to by the X and Y locations. X locations are the metadata headers, Y is the data collected. The longer the length of the clip the bigger the size of the table.
Timecode is embedded in the .csv and is used to sync the footage.
ARRI META Extract (AME) is required in order to extract frame by frame data from the Arri ALEXA cameras. It can be downloaded from ARRI Website
On AME, select the Input File or Directory where your ARI or MFX files are located, select the Output Directory and run the extraction process by pressing the START button. AME will start rendering the CSV files.
The CSV file is a tab delimited type of file. The name of the CSV file is the name of the clip. The following is a list of the column headers that are used by the LDT-A and LDT-M series to write the metadata:
Below we also identify which data is expected to be dynamic (D) and which is expected to be static (S)
| Header name | Metadata type | Description |
|---|---|---|
Index |
(D) | An incremental number, one increment per frame starting from '0'. |
Master TC |
(D) | The timecode of the camera at that moment in time. |
Lens Model |
(S) | Displays the name of the lens, this name is user defined at the time of encoding. |
Lens Serial Number |
(S) | The serial number of the lens. This value is user defined at the time of encoding. |
Lens Distance Unit |
(S) | The unit mesure can be metric (mm) or imperial (inch) and is specified doring encoding. |
Lens Focus Distance |
(D) | Distance in the specified focus unit (1/1000 inch or mm) infinity mark is expressed with the value INF. |
Lens Focal Length |
(D/S) | Focal length in 1/1000 mm. Static value if prime lens have been used, dynamic value if zoom. |
Lens Iris |
(D) | Calculated regular T-stop value from the Lens Linear Iris value. T-stop expressed in 1/10. |
Lens Linear Iris |
(D) | Aperture in units of 1/1000 in linear range (log of optical aperture indicated on lens ring). |
Data size will vary depending on how many columns AME is set to extract, below there is an example of data size for reference. A CSV file extracted from an ARRIRAW file contans 2877 bytes of headers and ~1168bytes/frame of data, for ~4045kbps @24fps.
Here a three frames sample file:
Index Master TC Reel Scene Take Director Cinematographer Production Circle Take Production Company Location Operator User Info 1 User Info 2 Camera Clip Name Camera Family Camera Serial Number Camera ID Camera Index Camera SUP Name Camera Model Camera Product Camera SubProduct System Image Creation Date System Image Creation Time System Image Timezone Offset System Image Timezone DST Exposure Time Shutter Angle Mirror Shutter Running Sensor FPS Project FPS Master TC Master TC Drop Frame Master TC Time Base Master TC Frame Count Master TC User Info Storage Media Serial Number SMPTE UMID Recorder Type Vari UUID Image Width Image Height Active Image Width Active Image Height Active Image Top Active Image Left Full Image Width Full Image Height Color Processing Version White Balance White Balance CC WB Factor R WB Factor G WB Factor B WB Applied In Camera Exposure Index ASA Target Color Space Sharpness Lens Squeeze Image Orientation Look Look Burned In Look LUT Mode Look LUT Offset Look LUT Size Look Live Grading Flags CDL Saturation CDL Slope R CDL Slope G CDL Slope B CDL Offset R CDL Offset G CDL Offset B CDL Power R CDL Power G CDL Power B Printer Lights R Printer Lights G Printer Lights B CDL Mode Lens Model Lens Serial Number Lens Distance Unit Lens Focus Distance Lens Focal Length Lens Iris RawEncoderFocus RawLds RawEncoderFocus RawMotor RawEncoderFocal RawLds RawEncoderFocal RawMotor RawEncoderIris RawLds RawEncoderIris RawMotor EncoderLimFocusLdsMin EncoderLimFocusLdsMax EncoderLimFocusMotorMin EncoderLimFocusMotorMax EncoderLimFocalLdsMin EncoderLimFocalLdsMax EncoderLimFocalMotorMin EncoderLimFocalMotorMax EncoderLimIrisLdsMin EncoderLimIrisLdsMax EncoderLimIrisMotorMin EncoderLimIrisMotorMax Lds Lag Type Lds Lag Value Lens Linear Iris ND Filter Type ND Filter Density Camera Tilt Camera Roll Master Slave Setup Info 3D Eye Info Sound Roll Frameline Version Frame Line File 1 Frame Line File 2 Frame Line 1A Type Frame Line 1A Name Frame Line 1A Left Frame Line 1A Top Frame Line 1A Width Frame Line 1A Height Frame Line 1B Type Frame Line 1B Name Frame Line 1B Left Frame Line 1B Top Frame Line 1B Width Frame Line 1B Height Frame Line 1C Type Frame Line 1C Name Frame Line 1C Left Frame Line 1C Top Frame Line 1C Width Frame Line 1C Height Frame Line 2A Type Frame Line 2A Name Frame Line 2A Left Frame Line 2A Top Frame Line 2A Width Frame Line 2A Height Frame Line 2B Type Frame Line 2B Name Frame Line 2B Left Frame Line 2B Top Frame Line 2B Width Frame Line 2B Height Frame Line 2C Type Frame Line 2C Name Frame Line 2C Left Frame Line 2C Top Frame Line 2C Width Frame Line 2C Height Noise Reduction Version Noise Reduction Mode Noise Reduction Strength Noise Reduction Applied
0 10:28:25:09 A030R0EC C63 1 -- -- -- -- -- A030C001_190603_R0EC ALEXA65 516 R0EC A Alexa65X_3.0:43106 Alexa65 65 SXT 65 03/06/2019 11:24:34 UTC+00:00 +00:00 20.000 ms 172.8 N/A 24 24 10:28:25:09 no 24 904929 -- 28b07864050000e1 060A2B340101010501010F00-13-000000-E140EBC70000400086C0AA5700000000 Codex Digital;;sim2-3.1.0-05027 Valid Image E140EBC7-0000-4000-86C0-AA5700000000 6560 3100 6560 3100 0 0 6560 3100 5 3200 0 1.130168 1 2.144204 no 1000 LogCWGam 100 1 No flip ARRI 709 No 3D Look LUT 14295119 215976 Unchanged 0.89924 0.9654 0.90487 0.80423 -0.0163 -0.00392 0.02676 0.9097 0.92425 0.98351 0 0 0 CDL LogC DNA 45 A 22364 22364 Inch 166.628 45 2.8 + 6/10 -- 467 -- -- -- 384 105 4494 105 4797 -- -- -- -- 105 1273 105 1282 1 0 4554 No Filter -- -3.6 0.5 independent single TOG_010 1 A65_OG_239S_90C Master A65_OG:2.39:1_Scaling:90 328 313 5904 2474 Aux A65_OG:2.39:1_Scaling:100 0 176 6560 2748 Inactive -- -- -- -- Inactive -- -- -- -- Inactive -- -- -- -- Inactive -- -- -- -- 1 OFF -- OFF
1 10:28:25:10 A030R0EC C63 1 -- -- -- -- -- A030C001_190603_R0EC ALEXA65 516 R0EC A Alexa65X_3.0:43106 Alexa65 65 SXT 65 03/06/2019 11:24:34 UTC+00:00 +00:00 20.000 ms 172.8 N/A 24 24 10:28:25:10 no 24 904930 -- 28b07864050000e1 060A2B340101010501010F00-13-000000-E140EBC70000400086C0AA5700000000 Codex Digital;;sim2-3.1.0-05027 Valid Image E140EBC7-0000-4000-86C0-AA5700000000 6560 3100 6560 3100 0 0 6560 3100 5 3200 0 1.130168 1 2.144204 no 1000 LogCWGam 100 1 No flip ARRI 709 No 3D Look LUT 14300583 215976 Unchanged 0.89924 0.9654 0.90487 0.80423 -0.0163 -0.00392 0.02676 0.9097 0.92425 0.98351 0 0 0 CDL LogC DNA 45 A 22364 22364 Inch 166.628 45 2.8 + 6/10 -- 467 -- -- -- 384 105 4494 105 4797 -- -- -- -- 105 1273 105 1282 1 0 4554 No Filter -- -3.6 0.5 independent single TOG_010 1 A65_OG_239S_90C Master A65_OG:2.39:1_Scaling:90 328 313 5904 2474 Aux A65_OG:2.39:1_Scaling:100 0 176 6560 2748 Inactive -- -- -- -- Inactive -- -- -- -- Inactive -- -- -- -- Inactive -- -- -- -- 1 OFF -- OFF
2 10:28:25:11 A030R0EC C63 1 -- -- -- -- -- A030C001_190603_R0EC ALEXA65 516 R0EC A Alexa65X_3.0:43106 Alexa65 65 SXT 65 03/06/2019 11:24:34 UTC+00:00 +00:00 20.000 ms 172.8 N/A 24 24 10:28:25:11 no 24 904931 -- 28b07864050000e1 060A2B340101010501010F00-13-000000-E140EBC70000400086C0AA5700000000 Codex Digital;;sim2-3.1.0-05027 Valid Image E140EBC7-0000-4000-86C0-AA5700000000 6560 3100 6560 3100 0 0 6560 3100 5 3200 0 1.130168 1 2.144204 no 1000 LogCWGam 100 1 No flip ARRI 709 No 3D Look LUT 14299290 215976 Unchanged 0.89924 0.9654 0.90487 0.80423 -0.0163 -0.00392 0.02676 0.9097 0.92425 0.98351 0 0 0 CDL LogC DNA 45 A 22364 22364 Inch 166.628 45 2.8 + 6/10 -- 467 -- -- -- 384 105 4494 105 4797 -- -- -- -- 105 1273 105 1282 1 0 4554 No Filter -- -3.6 0.5 independent single TOG_010 1 A65_OG_239S_90C Master A65_OG:2.39:1_Scaling:90 328 313 5904 2474 Aux A65_OG:2.39:1_Scaling:100 0 176 6560 2748 Inactive -- -- -- -- Inactive -- -- -- -- Inactive -- -- -- -- Inactive -- -- -- -- 1 OFF -- OFF