app.project.item(index).mainSource.isStill
app.project.item(index).proxySource.isStill
Description
When true the footage is still; when false, it has a time-based component.
Examples of still footage are JPEG files, solids, and placeholders with duration of 0. Examples of non-still footage are movie files, sound files, sequences, and placeholders of non-zero duration.
Type
Boolean; read-only.