mkvize-with-subs Batch remux videos into MKV and embed the matching SRT subtitle file 1:1 by filename — with no re-encode (no quality loss).
https://github.com/kythrasuntamer/mkvize_with_subs
This is a tiny “factory line” workflow:
Standardize files into MKV
Attach soft subtitles (SRT) so you don’t need to burn-in subs
Keep playback flexible (Plex/mpv/etc.)'
For each video file in a folder:
Writes an output MKV to OutputDir (default: <VideoDir>\mkvized_out\)
If a matching .srt exists, embeds it as a subtitle track
Uses ffmpeg stream copy (-c copy) so video/audio are NOT re-encoded
Here are the upsides:
✅ No quality loss (no re-encoding)
✅ Fast (remux + subtitle mux)
✅ One subtitle per video (correct 1:1 matching)
✅ Batchable (entire seasons / libraries)
✅ ** Use's Soft Subtitling so that they're optional and allowing you to toggle between multiple languages.
What it does NOT do
❌ It does not burn subtitles into the video.
❌ It does not re-encode video/audio.
❌ It does not attach every subtitle to every video.
This is a tiny “factory line” workflow:
Standardize files into MKV
Attach soft subtitles (SRT) so you don’t need to burn-in subs
Keep playback flexible (Plex/mpv/etc.)'
For each video file in a folder:
Writes an output MKV to OutputDir (default: <VideoDir>\mkvized_out\)
If a matching .srt exists, embeds it as a subtitle track
Uses ffmpeg stream copy (-c copy) so video/audio are NOT re-encoded
Here are the upsides:
✅ No quality loss (no re-encoding)
✅ Fast (remux + subtitle mux)
✅ One subtitle per video (correct 1:1 matching)
✅ Batchable (entire seasons / libraries)
✅ ** Use's Soft Subtitling so that they're optional and allowing you to toggle between multiple languages.
What it does NOT do
❌ It does not burn subtitles into the video.
❌ It does not re-encode video/audio.
❌ It does not attach every subtitle to every video.
