: A colloquialism used by the person reporting the bug to describe a file that should, by all accounts, be simple to process but is failing.
: It may refer to the visual content of the test video itself (e.g., a continuous, uninterrupted shot or a specific physical object shown in the clip). 5d0a14432e.720.mp4
: The file was being used to test if the software could produce a "solid" (complete and error-free) encode rather than a broken or audio-only file. : A colloquialism used by the person reporting