Volume

Volume in audio refers to the perceived loudness of a sound — controlled in digital audio by adjusting the signal level, measured in decibels relative to full scale (dBFS). In digital audio, 0 dBFS represents the maximum possible signal level before distortion (clipping); all practical levels fall below zero, meaning a dialogue track at -12 dBFS is significantly quieter than 0 dBFS (which would distort). Volume adjustments in a video edit are made clip-by-clip (setting the volume of individual clips) and track-wide (setting the overall level of an entire audio track), with keyframing available to create dynamic volume changes within a clip — for example, automatically reducing music volume under dialogue sections (audio ducking).

The standardization of volume levels for video delivery is governed by loudness standards that ensure consistent playback levels across different videos on the same platform. Viewers shouldn't need to adjust their volume control when switching between videos, and a video that's significantly louder than the platform average would be disruptive. The primary measurement used for streaming video loudness is Integrated LUFS (Loudness Units relative to Full Scale), which averages the perceived loudness of the entire program. YouTube and Spotify normalize uploaded content to approximately -14 LUFS integrated. Broadcast television uses stricter standards of -23 LUFS (EBU R128) or -24 LUFS (ATSC A/85 in North America). Videos uploaded significantly louder than platform standards will be automatically turned down by the platform's normalization system; those uploaded quieter will be perceived as quiet compared to adjacent content.

For B2B video producers, the practical volume discipline involves: setting dialogue/voiceover to a comfortable, consistent level (typically peaking at -6 to -3 dBFS, averaging around -12 dBFS), using audio ducking to reduce background music volume under spoken content (typically to 20–30% of music's standalone level), and checking the final loudness of the exported video against the target platform's LUFS standard before publishing. Free tools like Adobe Audition's Match Loudness, DaVinci Resolve's built-in loudness meter, and online LUFS meters can analyze an exported video and report its integrated loudness — allowing the producer to re-export with a corrected level if it's too quiet or too loud for the target platform. Getting this right ensures the video sounds professional and intentional rather than distractingly quiet or aggressively loud.