THE SHORT ANSWER
Here's the approach.
A dual-roller trim moves the boundary between adjacent segments. One side gains the frames that the other side loses, keeping the sequence duration unchanged. Both sides need enough available source material for the requested move.
Related tutorial.
Full tutorialThis is a supplemental tutorial. Its compatibility with Avid Media Composer 2024.10 has not been confirmed. Use the written steps and version-specific sources for the controls.
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Step by step.
Media Composer 2024.10- 01
Choose the transition
Select the required tracks and click the cut when the pointer shows the dual-roller icon. Alternatively, enter Trim Mode near the cut.
- 02
Confirm both sides
Check that the dual rollers are on the intended transition. With staggered edits, entering Trim Mode can select only the topmost nearest transition.
- 03
Trim and review
Adjust the transition and play through it. Confirm the timing on all affected video and audio tracks.
Another perspective.
Sources & version notes
Written for Avid Media Composer 2024.10. Menu names and available features can differ in other versions.
Version reference: Media Composer 2024.10Written answer checked against the linked official documentation for Media Composer 2024.10. Related videos have metadata verification only; they are supplemental resources, with no verified answer-specific timestamps or software-version compatibility assertion.