WAV to MP4
Pair a WAV recording with a still image and get an MP4 that YouTube, Instagram and TikTok accept.
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How to convert WAV to MP4
From WAV to an uploadable video in three steps
11. Upload your WAV
Drag the WAV onto the page or click “Upload”. Up to 1 GB per file, which is a little over an hour and a half of CD-quality stereo.
22. Choose the cover image
Upload a JPG or PNG and it stays on screen for the whole recording. Use 1920 by 1080 for YouTube, or 1080 by 1920 for Reels and TikTok.
33. Download the MP4 and post it
The MP4 carries AAC audio, which every platform accepts, and the file is far smaller than the WAV you uploaded.

Video platforms need a video file
YouTube, Instagram and TikTok reject a plain audio file. Putting the WAV into an MP4 with a still image is the standard way to publish a mastered track or a voice recording on any of them.

About a fifth of the size
WAV is uncompressed and takes about 10 MB a minute. The MP4 stores the same recording as AAC, so a five-minute track drops from roughly 50 MB to about 10 MB, cover image included.
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