Look at the actual ending
Play an authorized short clip through its final moment without switching scenes. Note whether it ends on a useful image, a black frame or an image that should never remain on screen. The desired ending is part of the presentation design, not a universal player preference.
Inspect the end visibility setting
OBS documents a Media Source setting that shows nothing after playback ends. Check its state and compare it with the cue list. A deliberate disappear-on-completion setting can explain a blank source without showing that decoding failed.
For an original example, a demonstration clip might finish above a background title. Hiding it could reveal that title appropriately. The same setting would be unsuitable if the final diagram must remain visible while the presenter explains it. Rehearse the actual composition rather than judging the source alone.
Check the saved handoff
Record the ending and the next cue, then inspect that short output. Confirm that no unintended gap, stale frame or obscured title remains. Keep the media revision identifiable because a later edit can replace the final frame even when the setting stays the same.
If the blank interval begins before completion, preserve that earlier failure separately. An end-policy explanation should not be used to dismiss an actual interruption in the middle of the clip. No clip was played for this article.
Questions answered
Should the final frame always stay visible?
No. It depends on what the presentation should show after the clip ends.
What if the picture disappears halfway through?
That is a different event; retain its timestamp rather than attributing it to end-of-file policy.
Sources & further reading
Official references for the subjects discussed. Service terms and device software can change.