Name the missing visual element
Identify the expected source and the scene where it should appear. Check whether its visibility control is enabled, then look at the other sources occupying the same area. An enabled item can still be hidden by an opaque element above it.
Inspect the documented stacking model
OBS places higher Sources-list entries above lower ones in the composition. In a rehearsal, temporarily hide the suspected covering element and inspect the result. Preserve its original state so this comparison does not become an accidental redesign.
If the expected image appears, record the layer relationship. Decide whether the covering element belongs behind it, needs a smaller footprint or should be intentionally visible only during another cue. Changing decoders or replacing media is unnecessary for the specific result of a confirmed opaque cover.
Restore and check the whole scene
Apply the intended layer arrangement and inspect adjacent elements as well as the recovered source. A quick fix that makes the camera visible may cover a caption or title elsewhere. Verify the composition in a short saved sample when the presentation depends on it.
If hiding the suspected cover reveals nothing, keep that result and continue investigating the source itself. This article supplies a focused comparison and reports no actual OBS scene test.
Questions answered
Can a source be visible in settings but absent from the picture?
Yes. Another source can cover it in the composition.
Should I delete the covering source to test this?
A reversible visibility comparison is usually enough to inspect the relationship.
Sources & further reading
Official references for the subjects discussed. Service terms and device software can change.