This often suggests a file that has been transcoded or converted from its original format to another (e.g., from a raw DVD rip to MP4), often to make it more compatible with devices or streaming, or to reduce file size [1].
💡 When you work with subtitle files, the timings must match the video length exactly. Knowing that the video runs for 01:59:32 helps you verify that any .srt or .ass subtitle file you use is correctly synchronized. OKSN-188-engsub convert01-59-32 Min