Music & Audio

Add Background Music to Video Free — Online Music Mixer

Add background music to your videos online. Import any audio file, adjust volume levels, set fade in/out, and mix with voiceover. Free.

Search intent

Layer background music under narration or screen recordings to enhance the viewing experience.

Primary keyword
add background music to video

Why use Nyxhora for this workflow

Import any audio format (MP3, WAV, AAC, OGG, FLAC) as background music — universal compatibility

Independent volume control for music and voice tracks — balance audio levels precisely

Fade in/out controls for smooth audio transitions — no abrupt starts or stops

Why background music improves (and can ruin) your videos

[Image: Volume level guidelines for music vs voice balancing]

Background music works because it fills the emotional gaps in your content. Silence between sentences feels empty. Subtle music creates atmosphere, maintains energy, and signals professionalism. The data: videos with background music get 10-15% higher watch time on average. BUT — music can also ruin your video if done wrong. TOO LOUD: music competes with your voice, viewers cannot understand you. WRONG STYLE: heavy metal under a corporate tutorial feels jarring. ABRUPT START/STOP: music that begins and ends suddenly feels amateur. NO FADE: music at constant volume feels flat. The goal: music that supports your content without calling attention to itself. It should be felt, not noticed.

Volume mixing: the specific numbers that work

[Image: Volume mixing chart with specific dB levels for different content types]

Here are the actual levels that work based on creator experience: FOR NARRATION-FOCUSED content (tutorials, demos): Music at 10-20% volume. Voice at 100%. Add 1-2 second fade-in, 2-3 second fade-out. The music should be barely audible — you notice its absence more than its presence. FOR MUSIC-DRIVEN content (montages, highlight reels): Music at 50-80%. Voice (if any) at 100%. The music is the star. FOR TALKING HEAD with background: Music at 5-15%. Very subtle ambient. Creates atmosphere without distraction. FOR TRANSITIONS: Music swell at transition points (increase to 40-50% for 1-2 seconds, then back to low). Signals topic changes. THE GOLDEN RULE: always listen with headphones before exporting. What sounds balanced on speakers may be too loud or too quiet on headphones. Adjust based on headphone playback.

Where to find royalty-free music (legally)

[Image: Comparison table of royalty-free music sources]

Nyxhora does not include a music library, but here are reliable sources for royalty-free music: FREE: (1) Pixabay Music — large library, no attribution required. (2) Uppbeat — curated library, free tier with credit. (3) YouTube Audio Library — built into YouTube Studio, free for YouTube videos. (4) Freesound.org — community-contributed, check licenses. PAID (better quality and selection): (1) Artlist — $10/month, unlimited downloads, universal license. (2) Epidemic Sound — $15/month, huge library, good search. (3) Musicbed — higher-end, cinematic quality. IMPORTANT: do not use copyrighted music without a license. YouTube's Content ID system will flag it, and your video may be demonetized or removed. Always use royalty-free or properly licensed music.

Audio format compatibility and quality settings

[Image: Audio format comparison with quality and file size recommendations]

NYXHORA SUPPORTS: MP3, WAV, AAC, M4A, OGG, FLAC for import. MP4 with AAC audio for export. FORMAT RECOMMENDATIONS: MP3 at 320kbps — best balance of quality and file size for background music. WAV — highest quality but large files. Use for critical audio. AAC at 256kbps — good quality, smaller than MP3 at same bitrate. OGG — open format, good quality, smaller files. For background music, MP3 or AAC at 256-320kbps is the sweet spot. Higher bitrate does not noticeably improve quality for background music (it matters more for music-driven content). The export always uses AAC encoding for the audio track, which is the standard for MP4 files and supported by all platforms.

How it works

1

Record or import your video

Start with a screen recording, webcam video, or import any video file. The video's original audio (your voice) is preserved as a separate track.

2

Add a background audio track

Open the Audio panel and import your background music file. It appears as a separate audio track below your video's audio. Supports MP3, WAV, AAC, M4A, OGG, FLAC.

3

Adjust levels and export

Lower music volume so it does not overpower narration (typically 10-30% of voice level). Add 1-2 second fade-in and 2-3 second fade-out. Export.

Frequently asked questions

Can I add multiple music tracks?

Yes. Each track appears as a separate audio layer on the timeline with independent volume, mute, and timing controls. You can layer ambient music under voiceover with background music.

Does Nyxhora provide royalty-free music?

Not currently. Import any audio file you have rights to use. Check Pixabay, Uppbeat, or Artlist for royalty-free tracks. Always verify the license before using music in your content.

Can I trim the music to match video length?

Yes. Audio clips can be trimmed, split, and adjusted exactly like video clips. Drag the handles to set start and end points, or split and delete unwanted sections.

How do I sync music to video beats?

Import the music, watch for visual peaks in the waveform, and align video cuts to those peaks. Some creators use the visualizer to see beat patterns. Manual sync works best for short videos.

Related guides

Explore more workflows and features in the Nyxhora Creator Studio.