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YSTV Archive: Difference between revisions
From YSTV History Wiki
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Typo, change date of umatic demise (we'd sold the players before 2000), add date of VTC head replacement
Dummy User (talk | contribs) (→IVC 1" Open Reel: about the end of the IVC) |
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=== Umatic and Mmatic === | === Umatic and Mmatic === | ||
A very common semi-pro 3/4 inch cassette format, with two different sizes of shell to accommodate different amounts of tape. Playing times are about 20 mins and 60 mins respectively. These were the main format for edited content until about | A very common semi-pro 3/4 inch cassette format, with two different sizes of shell to accommodate different amounts of tape. Playing times are about 20 mins and 60 mins respectively. These were the main format for edited content until about 1999 {{unsure|When did we move to U - it was in use in 1987?}}. YSTV still has a machine with close to new video heads replaced in 2000, so we can dub material off, the only problem is the volume of tapes to transfer! | ||
=== Betamax === | === Betamax === | ||
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=== VHS === | === VHS === | ||
This seems to have been the first format used to record live broadcasts as opposed to being used in production and only occasionally to record complete live shows for posterity. This was presumably aided by the relatively low cost of blank tapes. Unfortunately because they would play in domestic VCRs a large number of items have gone missing with their creators, so archive coverage is patchy. Picture quality is also variable, with some tapes having suffered major picture quality degradation over time. Playback is not a problem with a large number of VHS (and compatible S-VHS) machines still available. | This seems to have been the first format used to record live broadcasts as opposed to being used in production and only occasionally to record complete live shows for posterity. This was presumably aided by the relatively low cost of blank tapes. Unfortunately because they would play in domestic VCRs a large number of items have gone missing with their creators, so archive coverage is patchy. Picture quality is also variable, with some tapes having suffered major picture quality degradation over time. Playback is not a problem with a large number of VHS (and compatible S-VHS) machines still available. | ||
=== Media 100 === | === Media 100 === | ||
A significant amount of material edited on the [[The Mac|Media 100]] edit suite was transferred off to another machine and subsequently burnt to data CD. These CDs are still easily readable on modern machines, however the contents of the files are only accessible if they are re-imported (and re-typed) onto the Mac, because the video data is compressed with the proprietary video codec used by the Media 100qx capture card. Attempts to find a software codec for any available platform have so far failed - do let us know if you find one. In the mean time the only route out is to load the files back into the Mac, put them on a Premiere time line, and render to a standard format like DV, which then has to be transferred out over the Mac's 10M Ethernet port to the rest of the world for storage. | A significant amount of material edited on the [[The Mac|Media 100]] edit suite was transferred off to another machine and subsequently burnt to data CD. These CDs are still easily readable on modern machines, however the contents of the files are only accessible if they are re-imported (and re-typed) onto the Mac, because the video data is compressed with the proprietary video codec used by the Media 100qx capture card. Attempts to find a software codec for any available platform have so far failed - do let us know if you find one. In the mean time the only route out is to load the files back into the Mac, put them on a Premiere time line, and render to a standard format like DV, which then has to be transferred out over the Mac's 10M Ethernet port to the rest of the world for storage. | ||
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=== XviD === | === XviD === | ||
Derived from the MPEG-4 reference code, this is an open source lossy video codec from [http://www.xvid.org/ xvid.org]. It was first used to encode DV video uploaded to the [[Video Server]] to economise on disk space. As this usage increased to include all video played out from the Video Server, it became useful to archive the files even after they were deleted from the system, to avoid time consuming capture from tape. As Premiere Pro will import compressed video files, it is now much more convenient to find clips from the digital archive on data DVDs | Derived from the MPEG-4 reference code, this is an open source lossy video codec from [http://www.xvid.org/ xvid.org]. It was first used to encode DV video uploaded to the [[Video Server]] to economise on disk space. As this usage increased to include all video played out from the Video Server, it became useful to archive the files even after they were deleted from the system, to avoid time consuming capture from tape. As Premiere Pro will import compressed video files, it is now much more convenient to find clips from the digital archive on data DVDs than from SVHS tapes, so XviD compressed files have become the dominant format for archiving final productions. | ||
