How to start a video later without making it shorter
Tell Vizard Agent the new starting point and that the runtime must not change. It removes the opening, finds the seconds it now owes you in your other footage, decides where they belong rather than tacking them on the end, and rebuilds the audio with crossfades at the new joins.
What do you type into Vizard Agent?
Say all three things in one sentence: where to start, that the length is fixed, and where the replacement seconds come from. Leaving the last one out is the common mistake. Vizard Agent will otherwise assume it should simply deliver a shorter video, which is the reasonable reading.
Prompt
What does Vizard Agent actually do?
Trimming a weak opening is easy. Trimming it from a deliverable that has to stay thirty seconds is a different job, because eight seconds removed from the front has to come back from somewhere, and every caption timed against the old cut is now wrong. In the session behind this article it:
- Read the project history, downloaded both source videos, built contact sheets and transcribed both clips.
- Reviewed each source second by second (the unboxing, the reveal, the lifestyle shots) and built a first thirty-second version with a music bed and captions.
- After delivery, rebuilt with the new opening and eight seconds of backfill from the other source, placed where it helped the story rather than appended.
- Got fresh word timings for the changed cut, so the captions were re-derived rather than shifted, and checked that the closing caption landed correctly.
- Watched the new version back for pacing, then rebuilt the audio with crossfades at the two new joins, once the picture was settled.
- Checked the new audio and confirmed the fix, with the music, caption style and ending left as already approved.
When does this not work well?
The method needs slack somewhere in the material. Where every usable second is already in the cut, holding the runtime means repeating something or slowing something down, and Vizard Agent will tell you both are worse than delivering a shorter video. Two very different looks make the insert announce itself, and a voiceover written to length no longer fits.
Common questions
Can it choose where to add the seconds? Yes. Vizard Agent picks the point that serves the cut.
What if I have no other footage? Vizard Agent says so. Holding the length would mean repeating something.
Will the captions still match? Yes. Vizard Agent re-derives them from the changed cut.