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Woodstock 2007: Difference between revisions
→Network Output: - how it was wired up
Dummy User (talk | contribs) (→Projection: about the plans and the practise) |
Dummy User (talk | contribs) (→Network Output: - how it was wired up) |
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== Network Output == | == Network Output == | ||
With two stages running continually, there was always a question of what to send round campus. In the end it was decided to pick and choose between the two stages to try and provide a continual broadcast throughout the event. This required an extra video and audio mixer to mix between the two feeds available from the two stages. This was done using the [[Down Stream Keyer]] as a two-input video mixer, and a borrowed Behringer UB802 as an audio mixer. | |||
The audio mix was straight forward enough, with a single mono signal from each of the feeds being mixed into a single mono signal to go to network. Video was a little more complicated, because the DSK requires syncronised video inputs, and one of the video sources (the [[Panasonic Max]]) was a significant distance away, with a shortage of video signals to send it a sync signal. The solution was to lock the local frame-store vision mixer ([[Magic DaVE]]) onto the incoming signal from the Max, so that the two were in sync, following the Max's master oscillator. Thus the DSK could be used to mix between the two video feeds, once the dirt has been worn off the control pot by rattling the T-bar around. | |||
In the main control room the audio was balanced using one channel of Magic Alice, and the video with a Rediffusion video line driver. The audio went off down a standard XLR cable, and the balanced video down a couple of lengths of spare CAT5 cable scrounged from contractors in Goodrike a few years earlier. These ran to the Vanbrugh vent room, where the audio was passively split to go to Vanbrugh Stalls (for local broadcast) and over the return feed back to YSTV in Goodricke. To split the video, it was first de-balanced using a Rediffusion receiver, fed through a composite DA, and re-balanced for the trip to Goodricke. Another output of the DA fed the co-ax cable to Vanbrugh stalls and thence the netbox for the local TVs. | |||
This allowed the station to broadcast to Vanbrugh despite the fact that the single working link between Vanbrugh and Goodricke was in use for the return feed. | |||
{{Woodstock}} | {{Woodstock}} | ||
{{YSTV Productions}} | {{YSTV Productions}} | ||
[[Category:Productions]] | [[Category:Productions]] | ||