If you have a separate subtitle file (like an .srt ) for this release, you can use several methods to combine them:
: x264 (H.264/AVC), which is highly compatible with most smart TVs, consoles, and players.
: Often include English "hardcoded" subtitles for foreign dialogue sections, but rarely include full optional (soft) subtitle tracks unless specified in the release notes.
Click "Start multiplexing" to create a new MKV file with the subtitles embedded.
Open MKVToolNix and drag your video file and subtitle file into the "Source files" section. Check the boxes for the tracks you want to keep.
: This is the industry standard for MKV files. It "remuxes" the file to include the subtitle track without re-encoding the video, meaning there is no loss in quality .
: For temporary viewing without changing the file, rename your subtitle file to match the video file exactly (e.g., Nix.2022.WEBRip.x264-ION10.srt ) and place it in the same folder. VLC will automatically detect and load it.
: Tools like Adobe Premiere Pro or Veed.io can "burn" subtitles permanently into the video frame, though this requires re-encoding the video. Technical Details of ION10 Releases Container : Usually .mkv or .mp4 .