Confirm the intended file pair
Identify the exact video edition and subtitle file. Matching titles alone can hide different cuts, episode numbering or frame timing. Use a short known passage to confirm that the manually selected text belongs to the actual media item.
For a hypothetical collection, a film’s theatrical and extended editions may need different subtitles even when both filenames begin with the same title. Automatic discovery finding a file is not enough if it finds the wrong edition. Keep source identity and timing accuracy as separate observations.
Inspect the discovery choice
The mpv.net manual points to its subtitle configuration and the underlying sub-auto option. Use the current documented settings for the installed release and inspect the active configuration folder. A change in an unused old copy’s settings will not affect the player you actually launch.
Check the relevant filename and location rules in the supported documentation rather than randomly renaming a whole collection. Try one permitted pair and keep the original filenames recorded. Do not download arbitrary subtitle packages merely to test whether the automatic mechanism notices any file.
Report the two outcomes distinctly
Record manual loading, automatic discovery and displayed timing separately. If manual loading works but automatic discovery does not, include the redacted layout and setting. If both load but text drifts, describe that different timing problem instead of continuing to adjust discovery.
Keep private media paths out of public issues. Provide player version, active configuration route, source type and the smallest representative example. This article applies the manual’s separation between explicit loading and automatic detection; it does not guarantee subtitle accuracy, supply copyrighted files or claim a hands-on test of the reader’s installation.