Overview: Playback symptoms
Playback symptoms describe distinct failures or limits in starting, continuing and presenting media.
When does the problem appear: before playback, while data are arriving, or while frames are presented? Startup delay, stalls, quality limits and dropped frames point to different observations. The pages here give each result a precise meaning before an underlying cause is selected.
Playback startup delay
Playback startup delay is the wait before useful presentation, produced by the session’s control, resource, processing, delivery and player-readiness dependencies.Playback stalls
A playback stall occurs when the next required presentation cannot progress because media or another dependency is not ready, requiring evidence from the affected stage.Playback quality limits
Playback quality limits constrain the chosen delivery representation through applicable rate, format and presentation conditions rather than promising one fixed visual quality.Dropped video frames
Dropped playback frames are pictures not presented as intended, with counter origin and observation interval needed to distinguish client timing from source or conversion changes.Playback error categories
Playback errors identify observations at planning, access, processing, delivery or player stages, with their namespace and event context needed for interpretation.