TV
When Look And Read was first shown on the CBBC Channel, some of those programmes hadn't been broadcast in any format since as long ago as 1977. The much-missed Look And Read site stated the original 2" tapes needed to be electronically "washed" before transfer to the playout server. The Boy From Space might have existed on 1" transfers since this series remained in use originally until 1986, but King's Dragon had not been broadcast since 1981 and Joe And The Sheep Rustlers not since 1977.
Presumably all these have remained on the server since their first rebroadcasts in 2003/2004, though I suspect that with the savage cuts to Class TV they will now have been deleted...
noggin posted:
Servers are only used to hold material for short-to-medium lengths of time.
An uncompressed broadcast quality recording will take approx 75Gigabytes per hour at 720x576 4:2:2 quality. Storing every programme recording made over the last 40 years or so on servers at high quality would still be impractical.
The current BBC archiving system is based around uncompressed data transfer to a system that can be stored on a mixture of server and data tapes, in parallel with transfer to current broadcast digital VT format Digital Betacam (which uses around 2:1 compression) for use in current editing areas.
An uncompressed broadcast quality recording will take approx 75Gigabytes per hour at 720x576 4:2:2 quality. Storing every programme recording made over the last 40 years or so on servers at high quality would still be impractical.
The current BBC archiving system is based around uncompressed data transfer to a system that can be stored on a mixture of server and data tapes, in parallel with transfer to current broadcast digital VT format Digital Betacam (which uses around 2:1 compression) for use in current editing areas.
When Look And Read was first shown on the CBBC Channel, some of those programmes hadn't been broadcast in any format since as long ago as 1977. The much-missed Look And Read site stated the original 2" tapes needed to be electronically "washed" before transfer to the playout server. The Boy From Space might have existed on 1" transfers since this series remained in use originally until 1986, but King's Dragon had not been broadcast since 1981 and Joe And The Sheep Rustlers not since 1977.
Presumably all these have remained on the server since their first rebroadcasts in 2003/2004, though I suspect that with the savage cuts to Class TV they will now have been deleted...