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Muzaic.ai is a browser-based tool that scores video automatically. You give it a cut (or a folder of cuts); it returns a finished audio mix — music, SFX, ambience and voiceover as separate layers — mastered to broadcast spec, in roughly 30 seconds per clip.
What it actually does
The pipeline runs in four stages. First it analyses the video: scenes, objects, pacing, colour and sentiment. From that it builds an audio plan and commits each concept to a clear direction (the site's example: a string quartet under a battle scene) rather than averaging toward something inoffensive. Then it composes every layer to fit the picture and the other layers — SFX land on the action, ambience ducks under speech, the voiceover is drafted from your brief rather than read out. Finally it mixes and masters the result. Existing audio in the source can be kept, replaced or mixed under.
Output is three concepts per clip, exported as MP3 or WAV. Layer balance is adjusted inside Muzaic before export; the deliverable is the finished mix, not separate stems.
The commercial angle
Pricing is metered in minutes of finished audio, not per track or per download; downloads are unlimited. Personal is free for 10 minutes a month, non-commercial only. Creator ($45/month) covers your own brand and paid ads. Studio ($249/month) is for agencies: the licence travels to the client and the legal cover extends to them too. Enterprise adds TV, radio, cinema and OOH, plus a custom contract, DPA and SLA.
What it is not
It is not a music-generation toy. The free tier exists to test the workflow on your own footage; nothing from it may be published. The target user is a team producing hundreds of ad variants a month, where the audio step is the bottleneck.
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SFX Cellar
Discover a curated selection of royalty-free sound effects designed to enhance the impact of your videos. Our extensive library features a variety of sound effects organized by category, ensuring you find exactly what you need. Access an unlimited number of royalty-free sound effects in both high-quality WAV format and convenient mp3 format, complete with embedded metadata for easy organization. Whether for personal or commercial use, all our sounds come with clearance for any project you have in mind. With the complimentary version of SFX Cellar, you can look forward to regular updates every month, providing you with fresh audio options. Starting is entirely free, and all tracks in our catalog are royalty-free, meaning no additional costs are involved in their usage. Our licensing framework is straightforward and allows for unlimited downloads of music that can be applied across various platforms globally, including YouTube, Vimeo, and other social media outlets, as well as for TV commercials, podcasts, films, and video games. Plus, you're encouraged to customize the audio for your specific needs by cutting, fading, adjusting lengths, or overlaying voiceovers to perfectly suit your project's vision. This flexibility ensures that your creative projects can truly shine with the right soundscape.
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Soundstripe
Unlimited licenses and powerful search tools allow you to quickly find the right music, sound effects and video. Radio-quality music will strike the right chord. Browse our library of over 6,000+ free royalty-free songs, all composed by Grammy-winning artists. Unlimited licensing, new music every other week, and stem files with every song. You can make your stories stronger with royalty-free background music (sometimes called "copyright free"). You can use dozens of filters to find the best royalty-free music downloads from Grammy-winners and up-and-coming artists. Forget about complicated contracts. Perpetual licenses give you peace of mind and protect your work for life. This is stock music for modern creators. Enhanced sound design will draw your audience in. Make action scenes more intense. Give life to cities. In a horror sequence, you can increase the tension. You can find the SFX you need in our extensive library of studio-grade sound effects.
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