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Home > Terms
Terms You Should Know

New digital facilities come with their own language and technical terms - most of them related to data storage. Here is a guide to help you understand the lingo in the new control room:

BYTE: Is a unit of measurement of data and most often consisting of 8 bits.

FIBRE CHANNEL: Or FC.Fibre channel is a general term used to refer to the fibre channel interface standard as a whole The word Fibre is used as a generic term which can indicate copper or optical implementations of fibre channel products.

FTP: Short for File Transfer Protocol, FTP allows files to be exchanged over the Internet. It's an important part of transferring large video files from one facility to another.

GIGABIT ETHERNET: Or GigE Another form of data transfer, it supports rates of 1 Gigabit (or 1,000 megabits) per second Written as: (1Gbps) Ethernet has evolved into the most widely implemented physical and Link layer protocol today. Ethernet is controlled by the operating system. With cables CAT 5e and CAT 6, and low cost switches, enables fast access of DV up to cHD video to multiple nodes on the fabric.

PETABYTE: (PB) Equal to 1,024 Terabytes of storage.

TERABYTE: (TB) Equal to 1,024 Gigabytes of storage.

GIGABYTE: (GB) Equal to 1,024 Megabytes of storage.

MEGABYTE: (MB) Equal to 1,024 Kilobytes of storage.

KILOBYTE: (KB) Equal to 1,024 bytes of storage.

LAN: A local area network is a group of computer and video servers within the same facility.

MXF: Short for Material Exchange Format, a protocol that places a metadata wrapper around a video or audio file and allows it to be transferred from one video server to another, regardless of the format a server uses.

METADATA: Description information related to a given video or audio file. It typically includes when the content was recorded, who was involved with the material's acquisition, where it was recorded, and possible keywords describing the content. Think of it as Cliffs Notes for a file.

NETWORKED ATTACHED STORAGE ARCHITECTURE: Or NAS. In this approach, a network-attached storage (NAS) device is dedicated to file-sharing. The server handles all the processing of data but does not actually store any content itself. As a result, more hard-disk storage space can be added to a network without existing servers' having to be shut down. It is not to be confused with SAN (see below).

STORAGE AREA NETWORK ARCHITECTURE: Or SAN. A high-speed sub network of shared storage devices - in this case, video servers. The advantage of a SAN is that stored data does not reside directly on any of the servers, leaving more network capacity available to the end user and making it possible to have more server power dedicated to applications. The servers typically reside on a local area network (LAN) or wide area network (WAN).

TRANSCODE: Taking a computer file stored in one format and converting it to another so it can be more easily used and distributed. Transcoding is typically done by a third-party device that sits between two other devices.

WAN : A wide area network, computers and servers connected over a long distance. It typically includes two or more LAN's.


Bandwidth Requirements and Disk Usage

Standard Definition Bandwidth Per Stream
MiniDV, DVCAM, DVCPRO 3.6MBps
DVCPRO 50 7.7MBps
Uncompressed SD (8-bit) 20MBps
Uncompressed SD (10-bit) 27MBps
Compressed High Definition Bandwidth Per Stream
DVCPRO HD 5.8MBps to 14MBps
Uncompressed High Definition Bandwidth Per Stream
720p 24fps 46MBps
720p 30fps 50MBps
720p 60fps 100MBps
1080 24p (8-bit) 98MBps
1080i (8-bit) 120MBps
1080 24p (10-bit) 110MBps
1080i (10-bit) 165MBps


For VHS/VCD quality (MPEG1), 10MByte/Minute.

For DVD quality (MPEG2), 30-70MByte/Minute

For Mpeg4 codec, at 300kbit/Sec, it is 2.4MB/sec.

Mpeg4 capture rate is between 1Mb/sec and 15Mbit/sec


Mbps Encode rates


Hours 8 25 50 80
1 3.6GB 11.25 GB 22.50 GB 36. GB
24 (1 DAY) 86.4GB 270. GB 540. GB 864. GB
168 (1 WEEK) 604. GB 1.89 TB 3.78 TB 6 TB
8760 (1 YEAR) 31.5 TB 98.5 TB 197. TB 315 TB


Broadcast Video: 10-20 Mbps

PBS 19.3 Mbps

Video Masters Repurposing 25-30 Mbps

High-Definition Television 60-80+ Mbps

2K Film Images 12MB / frame

4K Film Images 40 MB/ frame


vStor models support the below resolutions for shared collaborative media editing:

DV 25 .... 25Mbits/sec , 25/8 = 3.12MBps x 3600 seconds/hour = 11.23 GB/Hour consumption

HDV ... 25Mbits/sec

DV50 .... 50Mbps, 50/8 = 6.25MBps x 3600 seconds/hour = 22.5GB/Hour consumption

HQ ... about 100-120Mbits/sec (depends on the image)

DVCPRO HD ... 100Mbits/sec , 100/8 = 12.5MBps x 3600 seconds/hour = 45GB/Hour consumption

HDCAM ... 140MBits/sec , 140/8 = 17.5MBps x 3600 seconds/hour = 63GB/Hour consumption

DNxHD 145MBits/sec 220MBits/sec (AVID Compressed HD) , 220/8 = 27.5MBps x 3600 = 99GB/Hour consumption

SD ... 168MBits/sec 336MBits/sec , 168/8 = 21. MBps x 3600 = 75 GB/Hour consumption, 336Mbps = 151GB/Hour

8 Bit SD - 176Mbps = 22MBps = 79GB/Hour consumption

Apple ProRes 422, 8 Bit 145Mbps = 18MBps = 65GB/Hour consumption
10 Bit 200Mbps = 25MBps = 90GB/Hour consumption
220Mbps = 27.5MBps = 99GB/Hour consumption



vStor models in conjunction with vShare will support the below resolutions for shared collaborative media editing:

HD 800MBits/sec 2000Mbits/sec , 2000/8= 250MBps, x 3600 = 900GB/Hour consumption

HD 1:1 10 bit uncompressed HD 1185Mbits/sec , 1185/8 = 148MBps x 3600= 533GB/Hour consumption

1920 x 1080, 10 bit uncompressed, 24 fps , HDV is 1440 x 1080

2K and 4K Film


 
Data Rate Per Stream MBytes/second
8 bit uncompressed HD 120
8 bit uncompressed SD 20
DVCProHD 12.5
MPEG2 I-Frame HD 12.5
DVCPro50 6.25
DV/DVCAM 3.125
HDV 3.125

 

Various transfer speeds for your information:

Mbps = Mega BITS per second

MBps = Mega BYTES per second

Value Units Value Units Service
10 Mbps 1.25 MBps 10Base-T Ethernet
12 Mbps 1.5 MBps Universal Serial Bus (USB)
40 Mbps 5 MBps IEEE 802.11a wireless (5.6 GHz band)
80 Mbps 10 MBps PCMCIA Card (PC Card) 16 bit
100 Mbps 12.50 MBps 100Base-T Ethernet (Fast Ethernet)
400 Mbps 50 MBps FireWire (IEEE 1394)
480 Mbps 60 MBps USB 2.0
1000 Mbps 125 MBps Gigabit Ethernet
1.6 Gbps 200 MBps eStor
2.8 Gbps 350 MBps eStor 2000 series Turbo
10 Gbps 1250 MBps 10G Ethernet (IEEE 802.3ae)


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