Terms | Meaning | Description |
|---|---|---|
4DDM | 4D Device Manager | UI app that sets up and maps IP based on devices installed in the Venue and the Racks to perform all settings for shooting |
4DML | 4D Media Live | The input image is processed to create transcoding and image segments (.m4s, flagmented mp4) and manifest files (.m3u8). An instance that converts the video source of each camera channel to the 4DHLS format consisting of one 4DMLM (4DML Manager) that manages processing internally and multiple 4DMLMP’s (4DML Media Pipeline) that performs actual processing. |
4DMLM | 4DML Manager | A manager who manages multiple 4DMLs and their pipelines, and manages media processing tasks |
4DMP | 4DML Media PipeLine | Pipeline to merge/separate fragments of 4DHLS contents processed in 4DML |
4DPD | 4D Producer & Director | UI app for shooting Live Service, Replay, Interactive VOD production, etc. |
4DRS | 4D Relay Server | Instances that receives video from the camera channel coming from the venue |
4DSM | 4D Streaming Manager | UI app that adjusts the area to be displayed in MainView/MultiView during Live Service. |
EFS | Elastic File System | AWS services that provide shared storage over a network for access from multiple instances. |
GOP | Group of Pictures Digital) | A unit of video that enables access and playback from an arbitrary point of view in a video (GOP uses the boundary as an I[DR] frame) |
HLS | HTTP Live Streaming | Apple's Adaptive Bitrate Streaming standard enables video playback without interruption by changing the quality of the video according to the network situation. |
MMC | Multimedia Maker Daemon Client | A PC that performs Replay production tasks and calibration tasks assigned by MMS |
MMd | Multimedia Maker Daemon | It is a general name for a Daemon that performs an image or function to be produced based on the original camera image, and refers to MMS and MMCs attached thereto. |
MMS | Multimedia Maker Daemon Server | An MMC management PC that assigns tasks to MMC and merges the results created in each MMC to produce results. |
PreSd | Pre Storage Daemon | A Daemon that saves the original image from the camera and provides the original image to VPd/4DDM/4DPS/MMc |
PostSd | Post Storage Daemon | A Daemon that collects the original of the video for Live Service and transmits them to 4DRS |
RTSP | Real Time Streaming Protocol | A standard that follows RFC2326/7826, which defines a server that streams video in real time, and generally refers to video streaming that follows this standard. |
SDI | Serial Digital Interface | Broadcast Digital Video Interface |
May be | Supplemental Enhancement Information | In AVC/HEVC digital video, auxiliary data can be inserted into the video bitstream, and it is used to insert data for position swipe in the 4DLive service. |
CMd | Core Module Daemon | The process in charge of image processing, the Daemon required to use Post Stabilization, a shake compensation effect |
EMd | Environment Management Daemon | A Daemon that stores system configuration information and diagnoses the state of various processes, and is mainly used to store mapped information. |
CCD | Camera Control Daemon | Daemon that controls the camera |
GCd | Gimbal Control Daemon | Daemon that controls the gimbal |
MTd | Message Transfer Daemon | Daemon responsible for transmitting messages inside the system. |
PCd | Process Control Daemon | Daemon in charge of the system processes |
VPd | Vision Processor Daemon | Daemon that adjusts the image of the camera's source based on the calibration data to create a video source for the Live service. |
AWS | Amazon Web Service | The name of the cloud service provided by Amazon |
| AWS Media Store | Stores original HLS contents for streaming with Storage Service provided by AWS |
| AWS Cloud Front | With the CDN service provided by AWS, service contents are cached where latency is minimized by region |
IMS | Integrated Management Server | A system that stores and controls information from the 4DReplay shooting system and the 4DLive relay system. There is a separate web page that can be used by the operator. i.e. the server that manages the HW/SW/configuration of the venue and the service configuration. |
CMS | Contents Management Server | A system that manages content such as sports event information, replay videos, and interactive videos. It consists of a content database, an API server that provides content information to applications, and a web page that allows operators to manage content. That is, a server that manages information about all contents to be created and delivered to the customer during the service. |
H.264 |
| The video compression standard is more advanced than the existing MPEG-4 Part2. Also known as AVC (Advanced Video Coding) |
H.265 |
| MPEG-H Part.2, which can be compressed to the same image quality with 50% of the data compared to H.264, is also called HEVC (High Efficiency Video Coding). |
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