Source Metadata

Name

digitalCharacteristicsBitRateReduction

Group Label

Bit Rate Reduction

Schema

rulib

Definition

bitRateReduction is a parent element for six subelements pertaining to compression of the audio or video data:
Codec Name
Codec Name Version
Creating Application
Codec Quality
Data Rate
Data Rate Mode

In the database, this element is a subelement of digitalCharacteristics. Digital Characteristics elements apply to digital files and to digital physical objects such as digital videotape. Digital Characteristics elements are displayed only when the value in the analog/digital flag element is either FILE_DIGITAL or PHYS_DIGITAL.

Repeatable

N

Name

digitalCharacteristicsBitRateReductionCodecName

Label

Bit Rate Reduction - Codec Name

Schema

AES 4.4.16.4.13.2 (codecName)

Definition

Name of the codec (compression algorithm) used to process the audio or video data.

Controlled Vocabulary

Videotape and Videodisc. BMP; Conexant YUV 4:1:1 (Y41P, CXY1); Conexant YUV 4:2:0; Conexant YUV 4:2:2 (CPLA, CXY2); IRAW; RAW; YUVP; YV12; YV16; CorePNG; H.264 (MPEG-4 AVC, MPEG-4 Part 10); Huffyuv; Lagarith; LCL; MJPEG2000; MSU; TSCC; AVS; Blackbird FORscene; Cinepak; DV (IEC 61834); Dirac; Firebird Original FORscene; H.261; H.263; MPEG-4 ASP; H.264 (MPEG-4 AVC, MPEG-4 Part 10); Indeo 3/4/5; KVCD; MJPEG (Motion JPEG); MPEG-1 Video; MPEG-2 Video; MPEG-4 ASP; MPEG-4 AVC; VP3; VP6; VP7 (TrueMotion S); Pixlet; RealVideo; Snow Wavelet Codec; Tarkin; Ogg-Theora; VC-1 SMTPE; WMV; ASF; WAX [source: rulib]
Audiotape. ADAT (Alesis Digital Audio Tape); ATRAC; DNR; Elcaset; Nagra; ProDigi [source: rulib]
Optical disc. AAC (Advanced Audio Codec, aka Mpeg-4); ATRAC (MiniDisk); CDDA (Compact Disk Digital Audio) [Redbook]; CD-MIDI; DualDisc; DVD-A (DVD Audio); Enhanced CD [CDExtra, CDPlus]; MP3; Multisession [Mixed Mode CD, Blue book]; SACD (Super Audio CD) [Direct Stream Digital (DSD)]; XRCD (Extended Resolution Compact Disc); HDCD (High Definition Compatible Digital); WMA (Windows Media Audio) [source: rulib]

Repeatable

N

Name

digitalCharacteristicsBitRateReductionCodecNameVersion

Label

Bit Rate Reduction - Codec Name Version

Schema

AES 4.4.16.4.13.3 (codecNameVersion)

Definition

Version of the codec (compression algorithm) used to process the audio or video data.

Format

Format as 1.0, 1.1 etc.

Example(s)

1.1

Repeatable

N

Name

digitalCharacteristicsBitRateReductionCreatingApplication

Label

not applicable; does not appear on form

Schema

rulib

Definition

Creating Application is a parent element for two subelements: Name and Version. Together these subelements identify the software application used to encode the object's audio or video data.

Repeatable

N

Name

digitalCharacteristicsBitRateReductionCreatingApplicationName

Label

Bit Rate Reduction - Creating Application Name

Schema

AES 4.4.16.4.13.4 (codecCreatorApplication)

Definition

The name of the software application used to encode the object's audio or video data.

Example(s)

SoundForge

Repeatable

N

Name

digitalCharacteristicsBitRateReductionCreatingApplicationVersion

Label

Bit Rate Reduction - Creating Application Version

Schema

AES 4.4.16.4.13.5 (codecCreatorApplicationVersion)

Definition

The numeric designation used to identify the version of the application specified by creatingApplication name.

Usage Note

Required whenever creatingApplicationName is supplied; for audio and video, the codec creator application version.

Format

Format as 1.0, 1.1 etc.

Example(s)

2.3

Repeatable

N

Name

digitalCharacteristicsBitRateReductionCodecQuality

Label

Bit Rate Reduction - Codec Quality

Schema

AES 4.4.16.4.13.6 (codecQuality)

Definition

Indication of whether the codec that has been applied to the audio or video object is lossy or lossless.

Controlled Vocabulary

lossy; code regenerating [source: AES]

Repeatable

N

Name

digitalCharacteristicsBitRateReductionDataRate

Label

Bit Rate Reduction - Data Rate

Schema

AES4.4.16.4.13.7 (dataRate)

Definition

Indicates the bit-rate the object's audio or video data has been processed to achieve. Expressed as kilobytes per second (kbps).

Format

Decimal numeral

Example(s)

64
128
256

Repeatable

N

Name

digitalCharacteristicsBitRateReductionDataRateMode

Label

Bit Rate Reduction - Data Rate Mode

Schema

AES 4.4.16.4.13.8 (dataRateMode)

Definition

Indicates whether the object's audio or video data has been processed to achieve a fixed (constant) or a variable bit rate.

Controlled Vocabulary

fixed; variable

Repeatable

N