1. Picture flashes on a number of channels. The flashes are due to merged fields from different points of time indicating an encoder- decoder problem.
2.
Streaks on picture and static on audio
indicating extreme corruption on the uncompressed link. Most probably due to a
failure of the IP switch carrying SMPTE2022 SDI traffic. SDI introduced
about 2 decades ago was very well characterized, robust and capable of reproducing
audio and video clocks closely since they are based on Phase locked Loops
(PLLs) tracking every clock edge. These kinds of
artifacts were seen, only in a lab setting, about 20 yrs ago while perturbing Deserializer
/ Serializer PLLs to assess link stability . Providers
who are launching SDI over IP (SMPTE 2022)
may now have to contend with these problems again because of the inherent
weakness in recovering audio and video clocks with fidelity from a
packetized stream subject to transient issues on the switching network.