How to fix music that suddenly gets louder partway through
Tell Vizard Agent the music jumps in volume and roughly when. It reads the level second by second across the delivered file rather than trusting the file's average, finds the point where the track changes section, and rebuilds the mix with a bed that stays at one level from beginning to end.
What do you type into Vizard Agent?
Say it jumps rather than that it is loud. Those are different faults with different fixes: "too loud" gets the whole bed turned down, which leaves the jump exactly where it was and makes the rest of the video too quiet. A rough position such as "about halfway" is precise enough.
Prompt
What does Vizard Agent actually do?
A file can measure perfectly on average and still make you jump halfway through, because the thing that startled you is a few seconds inside it. Only a reading over time shows it. The fix took several attempts, as the first few treated a problem with the track as a mixing problem. In the session behind this article it:
- Measured speech against music across a set of short videos whose music jumped in the second half, and read the summary loudness of both sections separately.
- Measured the music's level over time to find where the jump sat, smoothed the transition into that section, and compared the new file against the old one.
- Read the level second by second in the delivered file.
- Rebuilt the video with every piece level-matched and no music at all, then put the music back at one steady level, so the only thing that could be uneven was the bed.
- Listened to the track itself and found the real cause late: a quiet opening and a loud second half, so every attempt to balance it against the speech had balanced only the average.
- Built a uniform bed with no sections in it and re-rendered.
When does this not work well?
Some music is meant to change as it goes. A track with a deliberate drop, a build or a key change carries its dynamics as the whole point, and having Vizard Agent flatten it removes exactly what made it worth using. If the speech varies wildly, the voice may be the uneven thing, and a clipped source is damage, not level.
Common questions
Why did it measure fine? Because an average hides a jump. Vizard Agent reads it over time.
What if the track is meant to build? Say so. Vizard Agent will keep the build and control the peak.
Can I get a version with no music? Yes. Ask Vizard Agent and it renders one.