All are free and cross-platform:
Step 1 – Identify your files
Step 2 – Verify subtitle timing
ffmpeg -i oned762.mkv 2>&1 | grep Subtitle
Step 3 – Convert from 01:58:23 (full remainder)
ffmpeg -ss 01:58:23 -i oned762.mkv -vf "subtitles=engsub.srt" -c:v libx264 -preset fast -crf 23 -c:a copy oned762_engsub_from015823_full.mp4
Step 4 – Check output
ffprobe oned762_engsub_from015823_full.mp4
A filename like oned762_engsub_015823min_full.mkv (or .mp4) suggests:
| Component | Meaning |
|-----------|---------|
| oned762 | Custom identifier: could be a camera model (e.g., OnePlus 7/6? 762p?), a release group tag, or a OneDrive backup version. |
| engsub | English subtitles are present (either embedded as soft-subs or burned-in hard-subs). |
| 015823min | Duration = 1 hour 58 minutes 23 seconds. |
| full | Complete content (not trimmed). | oned762engsub convert015823 min full
Before converting, verify the actual file properties using MediaInfo (free tool). Look for:
If “oned762” refers to a legacy device (e.g., old smartphone recording at 762p ~ 1350x762), you may need to: All are free and cross-platform: Step 1 –
ffmpeg -ss 01:58:23 -i oned762.mkv -vf "subtitles=engsub.srt" -c:v libx264 -c:a copy full_converted.mp4
Common reasons:
If your English subs don’t match the 01:58:23 runtime, shift them forward or backward. Step 2 – Verify subtitle timing ffmpeg -i oned762