Put a reason beside the cut
Before changing an EDL segment length, name the visual or spoken cue the excerpt must preserve. mpv's format describes source ranges, but a numerically correct range can still cut an important phrase or transition.
Compare the end and the next beginning
Inspect the final action or words of one segment and the first meaningful moment of the next on the actual local setup. Check both against the segment manifest. If a cue is lost, revise the intended boundary rather than adding unrelated playback settings.
Keep source revision names in the comparison. A later edit of the same-looking filename can invalidate an otherwise clear segment decision. No boundary or frame-accuracy test was performed for this article; the proposed exercise needs the actual files and player.
Save the accepted sequence with its inputs
Record the source, offset, duration and accepted cue for each segment. Recheck joins after replacing a source or updating the timeline. This preserves why a cut exists and makes a later review more useful than a collection of unexplained timestamps.
Questions answered
Is a plausible segment duration enough to approve a join?
No. Review the content and audio around the actual boundary.
Can I claim frame-accurate editing from this planning method?
No. It does not establish measured seek or boundary accuracy on your files.
Sources & further reading
Official references for the subjects discussed. Service terms and device software can change.