We live in fascinating times: increasingly, we live in the era of cloud-based broadcast operations.
Moving to IP is allowing broadcasters to explore new working practices and mindsets. Esports has grown from IT disciplines and is moving to broadcast and has the potential to show new methods of working.
Previously a basic record/play system using a hard drive was considered. This relied on a table linking time codes in the recording with physical addresses so that the drive would access audio data blocks in the right sequence slightly ahead of when they were needed. In that way a time base corrector could present the samples in an unbroken sequence at the correct sampling rate to a DAC. The mechanical timescale of a legacy medium such as tape or film has been replaced by a logical timescale.
IP is delivering unprecedented flexibility and scalability for broadcasters. But there is a price to pay for these benefits, namely, the complexity of the system increases significantly as we add more video and audio over IP.
In this second instalment of our extended article on monitoring in OTT and VOD, we take a look at the core infrastructure and discuss how to analyze systems to guarantee that video, audio and metadata is reliably delivered through network and CDN infrastructures to the home viewer.