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What is this assertion failure key->key == 7?

April 26, 2017assertion failure

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What is this assertion failure key->key == 7?

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RAT v4 uses a locally scoped multicast group as a message bus (MBUS) to communicate between the user interface and the audio engine. The same message bus is incorporated in UCL versions of VIC with the intention of providing lip-synchronization. For lip-sychronization to be effective the audio and video tools need to negotiate appropriate playout delays. Unfortunately there are versions of UCL tools in circulation that do not have the same configuration file format, and backwards compatibility has not been added. Thus the reason for the assertion failure. It is now possible to get versions of the UCL tools with the same mbus file format – the latest vic and rat releases have this. In addition, it is necessary to clean out persistent MBUS state.