| Name | Kind | Description |
| the render configuration flow | activity diagram | |
| Thread | class | We can basically reuse the Thread class design from cinelerra2, Thread becomes a baseclass for all Threads |
| time | attribute | |
| Time | class | denotes a temporal position (time point), based on timeline start. investigate posix.4 realtime timers, wrap these here |
| timeline | node | |
| timeline | relation | |
| Tool | class | |
| tool | package | sourcecode package Tools and Utilities (separate from the main cinelrra binary) |
| tool | artifact | |
| ToolFactory | class | |
| toolfactory | artifact | |
| track | attribute | |
| track | artifact | |
| Track | class | |
| tracks | relation | |
| tracks | relation | |
| Trafo | class | |
| trafo | artifact | |
| treat | operation | |
| treat | operation | |
| treat | operation | |
| treat | operation | |
| treat | operation | |
| treat | operation | |
| treat | operation | |
| treat | operation |