• Database •
Collection of related information stored in a structured format based on tables. In Etere, the central database resides on a network SQL Server, while the Automation database is stored locally and periodically synchronized with the central database to ensure playout independence
• Decoding •
Process of transforming compressed media content into an uncompressed format using a decoder — for example, to enable video file playback
• Demilitarized Zone •
Segment of a company's internal network designated for public access. Also known as DMZ, it separates internet-facing services and servers from the internal LAN, helping to protect trusted systems from external threats
• Device •
Item of broadcast equipment controlled by the system. Etere supports nearly all devices currently used in the broadcast industry, including, but not limited to, video servers, video cards, master control units, routers, logo generators, cart machines, tape libraries, and tape drives
• Digital Terrestrial Television •
Term commonly used in Europe to refer to the transmission of digital television signals over terrestrial radio broadcast frequencies, as opposed to satellite or cable delivery. Also known as DTT
• Digital Video •
Video format , also known as DV, that includes variants such as DV25 and DV50
▪ DV25 uses 5:1 compression, 4:1:1 color sampling and a fixed data rate of 25 Mbps
▪ DV50 offers 3.3:1 compression, 4:2:2 color sampling, and a fixed data rate of 50 Mbps
• Digitizing •
Process of recording footage into a digital system (e.g. disk-based) from an analog source (e.g. tape-based). Etere provides digitizing capabilities to ingest video content and record daily on-air schedules
• Dolby •
U.S.-based company specializing in audio noise reduction, audio compression, and surround sound technologies. The term Dolby is commonly associated with a family of audio technologies designed to enhance sound quality in film, television, and music, that includes, among others:
▪ Dolby Digital (also known as AC-3), which delivers 5 full-bandwidth audio channels and 1 low-frequency effects channel from a 6-channel source, forming a channel configuration commonly referred to as "5.1"
▪ Dolby E, which delivers 5.1+2 audio channels (i.e. 5 full-bandwidth channels, 1 low frequency effect channel and 2 additional channels) from an 8-channel source
▪ Dolby Surround, which delivers 7 full-bandwidth audio channels and 1 low frequency effect channel from an 8-channel source, forming a channel configuration commonly referred to as "7.1"
• Downloading •
Process of retrieving a media file from an archive to a designated server. It is the reverse process of uploading. Etere enables media files to be downloaded as needed, such as before their scheduled broadcast, either through workflows (Etere Data Mover/Etere Media Manager Service) or via web (EtereWeb Services).
• Downstream Key •
Signal that can be applied onto a video feed by the downstream keyer module of a video mixer/switcher. It's used to overlay graphics, both still and animated, onto a program feed. See Downstream Keyer below
• Downstream Keyer •
Module within a video mixer/switcher that handles the applying of a downstream key. Also known as DSK. Etere works seamlessly with DSKs to overlay graphics onto the programs feed
• Drop-Frame / Non-Drop-Frame Timecode •
Timecode counting convention used in NTSC video systems to accurately track time during playback or recording. Since NTSC video runs at 29.97 frames per second instead of a true 30 frame per seconds, timecode would gradually drift behind real-time
▪ Drop-frame (DF) timecode corrects this by skipping two frame numbers every minute, except every tenth minute, keeping the timecode aligned with the real-time clock
▪ Non-drop-frame (NDF) timecode counts every frame sequentially, resulting in a continuous count that does not however match real time over long durations
• Dubbing (audio) •
Process of applying an already existing dubbed audio file to a video content, without altering the video itself. This should not be confused with the creation of a such audio content (as done in a recording studio), which is also called "dubbing". Etere allows to easily add audio tracks, such as those in a different language, onto the original video
• Dubbing (cassette) •
Process of copying media content from a physical tape, like a video or audio cassette, onto an alternative storage medium, either physical or digital. Dual cassette decks featured a high-speed dubbing function that allowed to copy media content at a faster-than-normal speed, at the expense of some loss in quality of the duplicated material. Etere supports this process by allowing to ingest from tape into other types of storages