By design, Cast QC has some limitations compared to Download QC, as the tools and methods used in content review are a bit more limited. Full video scopes and audio waveform review will not be available during Cast QC, and performing QC on the streams versus the original source has the potential to also introduce compression-related issues.
Therefore, the ability to reproduce the issue is essential to QC. This will indicate if the issue is caused by playback, your monitor, or if it is actually contained in the source material itself.
Some workarounds:
Having an optimal setup
This will allow the QC operator to identify when something is amiss. Is the audio too loud at normal loudness settings? Or too quiet? If the TV is properly calibrated, then it’s possible discoloration seen is a potential issue.
Stepping Through to determine Additional Black at head and tail
While an operator cannot step through frames while casting, they can in the Asset QC player prior to casting. That means checking head and tail black/silence lengths is a good check to do prior to starting QC. If QC does find an issue they want to step through, they can stop the cast and use the Asset QC player for accurate timings.