Glossary¶
Access unit¶
A coded video frame or other independently timed media unit. MISB timestamp messages are associated with video access units.
Class 1 motion imagery¶
The MPEG-2 Transport Stream form commonly associated with live STANAG 4609 FMV. MISP also defines other classes and storage profiles.
FMV¶
Full Motion Video: motion imagery carried with synchronized metadata and, optionally, audio.
IMAP¶
Integer Mapping: the MISB method for representing physical values as compact integers. ST 1201 defines IMAPA and IMAPB mappings and their special values.
KLV¶
Key-Length-Value encoding defined by SMPTE ST 336. The key identifies the data, the BER length gives its size, and the value contains a primitive value or a nested set.
KLVA¶
The MPEG registration used to identify KLV metadata carried in an MPEG transport stream.
Local Set¶
A KLV value containing shorter tag-length-value items whose tag meanings are defined by a parent standard, such as ST 0601.
MISP¶
Motion Imagery Standards Profile: the technical profile adopted by STANAG 4609 Edition 5.
MISMMS¶
Motion Imagery Standards Minimum Metadata Set. MISB ST 0902 defines the minimum metadata population and cadence used by the corresponding profile.
MISB¶
Motion Imagery Standards Board, publisher of the metadata and motion-imagery standards used by this project.
MPTS¶
Multiple Program Transport Stream: one MPEG-TS multiplex containing more than one program.
PCR¶
Program Clock Reference: the MPEG-TS clock samples a decoder uses to recover the program time base.
PES¶
Packetized Elementary Stream: the MPEG Systems layer that groups video, audio, or metadata payloads and may carry PTS and DTS timestamps.
PID¶
Packet Identifier: the 13-bit number that identifies a packet stream inside MPEG-TS.
PMT¶
Program Map Table: the PSI table that declares a program's PCR, video, audio, metadata, and other elementary streams.
PSI¶
Program Specific Information: MPEG-TS tables used to discover programs and their streams. The PAT and PMT are the central tables for this library.
PTS¶
Presentation Time Stamp: the media time at which a PES access unit is presented. MPEG-TS PTS uses a 90 kHz clock and wraps at 33 bits.
Report-on-Change¶
A metadata rule in which unchanged values may be omitted from later packets. Receivers retain a value until it is replaced, cleared, or expires.
SDP¶
Session Description Protocol. An SDP document can describe the address, port, and RTP format used to receive an MPEG transport stream.
SPTS¶
Single Program Transport Stream: an MPEG-TS multiplex containing one program.
LiveTransportTransformer emits the selected program as SPTS.
ST 0601¶
The MISB UAS Datalink Local Set, widely used for aircraft, sensor, frame, and target metadata in FMV.
ST 0902¶
The MISB Motion Imagery Standards Minimum Metadata Set profile.
ST 0903¶
The MISB Video Moving Target Indicator standard. It represents detections, targets, tracks, masks, chips, algorithms, ontologies, and related geometry.
STANAG 4609¶
The NATO standardization agreement for digital motion imagery. Edition 5 adopts MISP-2019.1 as its technical profile.
Universal Set¶
A KLV set whose child items use 16-byte Universal Labels rather than short local tags.
VMTI¶
Video Moving Target Indicator metadata defined by MISB ST 0903.
ZLI¶
Zero Length Item: a Local Set item with an empty value. In Report-on-Change metadata it clears the receiver's current value for that item.