ABR:
Average Bitrate automatically adjusts the bitrate over time so you can meet your target and maintain video quality based on available storage. See Rate control.
ADA:
Axis Device Assistant. Web interface in Axis products.
AEAD:
Authenticated Encryption with Associated Data. An encryption mode that provides both confidentiality and integrity protection in a single operation. AES-GCM is an AEAD algorithm.
AES:
Advanced Encryption Standard.
AV1:
A video compression standard, also known as AOMedia Video 1. See AV1.
CGI:
Common Gateway Interface. A technology that enables web servers to execute an external program to process web requests.
FPS:
Frames per second.
FTP:
File Transfer Protocol.
GOP:
Group of Pictures. In video coding, specifies the order in which intra- and inter-frames are arranged.
ICM:
Integer Counter Mode. A block cipher mode used in AES-CTR encryption.
MBR:
Maximum Bitrate lets you set a target bitrate to handle bitrate limitations in your system.
See Rate control.
MIKEY:
Multimedia Internet KEYing. A key management protocol used to exchange SRTP master keys. See RFC 3830.
MJPEG:
Motion JPEG. A video compression format where each frame is a separate JPEG image.
MKI:
Master Key Index. A field in SRTP packets used to identify which master key is currently active, enabling in-session re-keying.
NAL:
Network Abstraction Layer. In H.264 and H.265, the encoded video data is organized into NAL units.
PPS:
Picture Parameter Set. An H.264/H.265 NAL unit with general video parameters.
RFC:
Request For Comment. A publication from the IETF that describes internet standards and protocols.
ROC:
Roll-Over Counter. A 32-bit counter that tracks how many times the RTP sequence number has wrapped around. Part of the SRTP cryptographic context.
RR:
Receiver Report. An RTCP packet sent by receivers to report reception statistics.
RTCP:
Real-Time Control Protocol. Sends control messages about the RTP stream.
RTP:
Real-Time Protocol. Transmits real-time data streams such as audio and video.
RTSPS:
RTSP over TLS. The secure version of RTSP, where TLS encrypts all RTSP signaling. Default port 322.
SCP:
Secure Copy.
SDP:
Session Description Protocol. Describes media streams when RTSP receives a DESCRIBE request.
SDES:
Session Description Protocol Security Descriptions. An SDP-based key exchange mechanism used to provide SRTP keys inline in the SDP offer/answer.
SPS:
Sequence Parameter Set. An H.264/H.265 NAL unit with general video parameters.
SRTP:
Secure Real-time Transport Protocol. An RTP profile providing encryption, authentication, and replay protection for media streams. See RFC 3711 and RFC 7714.
SSRC:
Synchronization Source. A 32-bit identifier that identifies the source of an RTP stream. Used in the SRTP cryptographic context to bind keys to a particular stream.