How to reuse your own subtitle file when you cut a video into reels
Upload the long video, your SRT and the timecodes you want cut. Vizard Agent saves your subtitle file as it is, re-maps every cue onto each reel's own clock so nothing drifts, and renders the vertical cuts with your wording untouched rather than transcribing the video again.
What do you type into Vizard Agent?
Attach everything at once and say the subtitle file is authoritative. On a video with speech, Vizard Agent's default is to transcribe it, which gives perfectly good subtitles that aren't yours and don't match your other posts. Without that sentence it treats your SRT as a reference and generates its own alongside.
Prompt
What does Vizard Agent actually do?
Your cues are timed against the master, so a reel that starts at four minutes twelve needs every one moved back by exactly that much. Vizard Agent re-maps the timings rather than re-reading the audio, and checks the framing at each reel's own timestamps, because people move. In the session behind this article it:
- Saved the user's subtitles to a working file, and each reel's timecodes to a file of its own, for a 1920×1080 talk to be cut into four vertical reels.
- Detected the speaker's face position, generated vertical crop tests at several positions and stepped the crop across in forty-pixel increments to compare them.
- Checked the framing at the timecodes of all four reels, not just one.
- Re-mapped the subtitles onto each reel's own timeline, rendered a test and read the generated subtitle blocks back to confirm every cue survived.
- Rendered all four reels with subtitles and without, then extracted check frames from each and reviewed them.
When does this not work well?
The method rests on your SRT matching the video you uploaded. When it doesn't, the failure is silent: a drift that gets worse as the reel goes on. An SRT from a different export shifts everything, even if only the intro was trimmed. Variable frame rate recordings creep, and cues that straddle a cut point split a sentence across reels.
Common questions
Will it change my wording? No, if you say not to. Vizard Agent treats a supplied SRT as authoritative.
Will the captions be burnt in? Both ways. Vizard Agent renders a burnt-in set and a clean set in the same run.
What about a cue that spans my cut? It is moved whole into one reel. Vizard Agent will not deliver half a sentence.