"Worksheet","Verify a transparent video export over a contrasting background","Evidence status","Your configuration"
"Purpose","Choose a format and workflow that support alpha, then reimport the saved file over a visible contrasting background. A black player window cannot establish whether transparency survived.","Proposed workflow",""
"Check","Question to record","Decision","Your observation"
"Alpha presence","Background visible through intended areas","Transparency retained",""
"Edges","Semi-transparent boundary","Interpretation checked",""
"Recipient","Actual application and version","Handoff verified",""
"Example","A hypothetical title animation appears on black in a basic player. It could contain transparent pixels displayed against black, or opaque black encoded into the picture. Compositing the saved file over a colored background distinguishes those states far better than the player view.","Illustrative; not a measured product result",""
"Source","https://helpx.adobe.com/uk/premiere/desktop/render-and-export/export-files/overview-of-export-settings.html https://support.apple.com/guide/final-cut-pro/supported-media-formats-ver2833f855/mac","Official references; scope in article",""
"Result","Accepted / unresolved / needs correction","Record date and configuration",""