Open the file with MediaInfo (free tool) or VLC → Tools → Codec Info. That will tell you the real format, codec, subtitle tracks, and bitrate. No guessing needed.

When handling localized video profiles like engsub , creators must choose between burning the text directly into the video matrix (hardcoding) or embedding it as an independent data stream within an MKV or MP4 container (soft-muxing).

:

A: Subtitle Edit supports over 30 formats, including VobSub (.idx/.sub). Conversion to SRT first makes editing easier.