Subtitle Black.widow.2021.1080p.br.x264.aac.6ch... -

This specific naming convention is a "scene" standard used to identify the quality and source of the file: The title and theatrical release year. 1080p: The resolution (High Definition, 1920x1080 pixels).

A free, powerful tool if you need to permanently change the frame rate or offset for this specific 1080p BR rip. subtitle Black.Widow.2021.1080p.BR.x264.AAC.6ch...

One of the largest databases; it allows you to filter by "Blu-ray" sources specifically. This specific naming convention is a "scene" standard

If the audio and text don't match up exactly, you can use these tools to fix the "offset": One of the largest databases; it allows you

A simple web tool where you upload your file, enter the time shift (e.g., +2 seconds), and download the corrected version.

Searching for the exact file string typically leads to subtitle repositories and media databases. If you are looking to find, sync, or understand this specific release, Release Technical Breakdown