You scroll from a loud video into yours and it almost disappears. Or you turned it up and now the voice crackles. Both have the same few causes, and both are fixed before you post, not after.
A podcast mic set low, a stream where the game is louder than the voice, a call recorded on a laptop. A clip carries the sound of the moment you cut, so a quiet recording gives you a quiet clip.
YouTube lowers videos that are much louder than average so the feed stays even. It does not raise quiet ones. Do not count on any app to rescue a clip that went out too quiet.
Pushing the whole clip louder also pushes the loudest moments past the top. A laugh, a shout or a hit of music then crackles or sounds flat and squashed, which is worse than quiet.
Works the same in CapCut, Premiere, DaVinci or a free online tool. The numbers are a guide, your ears decide.
Your clip keeps the sound of the moment exactly as it is in your video, and sound effects you add play over the voice without turning it down. So the clip sounds like your source: start from a video that sounds right, and the steps above take care of the rest.
That makes the source the place to fix it. If you want to check or rework the sound on its own, Extract audio pulls it out of any video in your browser. And if a swear word is the loudest thing in the clip, bleeping it covers that too.
Usually the source was recorded quietly and the clip kept that level. Other videos in the feed were made louder before posting. Bring yours to around -14 LUFS with the loudest moments under -1 dB and it will sit with them.
No. YouTube turns videos that are much louder than average down, but it does not turn quiet ones up. A clip that goes out quiet stays quiet.
The loudest moments were pushed past the top and got cut off. Turn the volume back down and use a limiter instead: it raises the clip as a whole and stops the peaks at a ceiling.
Around -14 LUFS for the whole clip is a safe target for TikTok, Shorts and Reels, with the loudest moments under -1 dB. A little either side is fine.
Clearly lower than the voice. A simple test: on a phone speaker you should understand every word without trying. If you have to lean in, lower the music.
SnapDub finds the moments worth posting in a long video and cuts them to vertical with captions. Start free, no card.
Make your clipsAlso worth reading: what to put under a clip and why Shorts get no views.