# See a stalled transfer

12 seconds. Silent excerpt; no speed changes.

An explanatory graphic of a genuine stream-register VCD. Unknown initial values remain dashed. This separate fixture does not validate the packet-filter revision.

- **00:00:00.000–00:00:03.299** A small test. A visible behavior. Real VCD data shown as an explanatory trace.
- **00:00:03.300–00:00:08.999** Output holds while stalled. This fixture does not validate the packet-filter change.
- **00:00:09.000–00:00:11.999** Then the transfer completes.

Source: film-overview.mp4, 56–68 seconds. The complete film and its limitations remain available on /demo and /demo/walkthrough.