About: When using the input failover functionality, Live Video Cloud expects the formats of both ingested signals to be identical. Format discrepancies can occur due to various factors, such as different encoders or systems used to ingest signals. The impact of the format discrepancy depends on the specific parameter as well as the setup and use case.
Impact and behavior
Inputs
- Inputs always try to switch seamlessly between signals even if format discrepancies exist.
- Differences in the video/audio resolution and bitrate are expected to be handled seamlessly.
- Codec changes or changes in other parameters are more likely to cause issues or potentially not work, meaning the input will not provide a functional outgoing signal.
Outputs
- Transcoded outputs are expected to handle any kind of format change seamlessly.
- Passthrough outputs are expected to show similar limitations as inputs.
Receivers/Takers
- Consumers of transcoded output signals are expected not to be impacted by any format discrepancy as long as the output itself is configured to generate a signal supported by the receiver/taker.
- Consumers of passthrough outputs might be impacted even by changes in the video resolution. The specific behavior of the receiver/taker depends on its technical capabilities.
Inspect signal differences
To identify format discrepancies, open the input inspector which consists of a status and metrics section.
Status
Identified format discrepancies are detected by LVC and displayed in the inspector as part of the input status (and can be further identified as part of the signal/source metrics).
Metrics
Signal formats can be checked by pressing "Compare to". A flyout will open with the info on the non-active signal (left) and the active signal (right).
By addressing format discrepancies, it may be possible to improve the quality and consistency of signals used in an input with failover enabled.