System and IINA version:

• macOS 12.4
• IINA 1.3.0

Expected behavior:
If subtitles can be found by hand using Open Subtitle's web site then IINA will be able to find the subtitles.

Actual behavior:
For a video file named Better.Call.Saul.S04E03.1080p.BluRay.x265-RARBG.mp4 using Open Subtitles IINA reports No subtitles found. Searching Open Subtitles by hand using the text Better.Call.Saul.S04E03.1080p.BluRay.x265-RARBG, Open Subtitles adjusts the search string to be better call saul s04e03 and finds the correct subtitle file.

Steps to reproduce:

• Make a copy of any video long enough to have subtitles
• Rename the copy to be Better.Call.Saul.S04E03.1080p.BluRay.x265-RARBG.mp4
• Open the video file in IINA
• Click on Find Online Subtitles... under the Subtitles menu
• The OSD message No subtitles found is displayed

• MPV does not have this problem.

This is an IINA issue.

How often does this happen?
Everytime.