YouTube Audio Requirements: Quality, Format, and LUFS Guide

YouTube is the world's largest audio and video platform, and its audio handling directly affects how your content sounds to viewers. Understanding YouTube's format requirements and loudness normalization helps you upload the best possible audio.

YouTube's Accepted Upload Formats

YouTube accepts essentially any common video format with embedded audio — MP4, MOV, AVI, MKV — and standalone audio formats when uploading to YouTube Music. For standard video uploads, the audio track inside an MP4 (AAC, MP3, or other codec) is accepted and transcoded on YouTube's servers.

How YouTube Handles Audio After Upload

YouTube transcodes all uploaded audio to AAC at multiple bitrates for different quality levels. For standard quality: 128 kbps AAC stereo. For high quality (HD videos at 1080p or above): 192–384 kbps AAC depending on the original quality. For YouTube Music uploads: 256 kbps AAC. Your original audio quality determines the ceiling — upload a 64 kbps MP3 and the YouTube stream will sound like a 64 kbps MP3 regardless of the output setting.

Loudness Normalization

YouTube normalizes all content to approximately -13 to -14 LUFS integrated loudness. Loud masters get turned down; quiet masters stay quiet (YouTube does not boost quiet content above its target). Master your audio to -14 LUFS to match the target directly and avoid any normalization-related level changes. True peak: keep below -1 dBFS.

Best Upload Practice

Upload video with uncompressed or high-bitrate audio whenever possible: WAV audio inside MKV or uncompressed MOV gives YouTube's transcoder the cleanest source. If you are exporting from a video editor, use the highest-quality export preset and then upload — do not pre-compress the audio before uploading. YouTube's transcoding quality has improved significantly, but it is only as good as the source you give it.

For Music Videos

Music video audio: export your video with stereo WAV or high-bitrate AAC (320 kbps) audio track. YouTube Music uses the audio from your music video upload if you distribute through YouTube Content ID. A clean, well-mastered audio track at -14 LUFS with -1 dBFS true peak is ideal for both standard YouTube and YouTube Music delivery.