Video audio tools
music, MP3 & volume
Fix or replace the sound of any video: add a song, pull the audio out as MP3, mute it, make it louder, or fade it in and out.
Audio tools
Video to MP3
Pull the audio outExtract the audio from any video as MP3, M4A or WAV. Trim first to keep just a song or a quote. Free, fast and never uploaded.
Open Video to MP3Mute
Remove the soundStrip the sound from any video in a second, without re-encoding the picture. Free, no watermark, and your video never leaves your device.
Open MuteVolume boost
Louder or quieter audioMake a quiet video up to 3× louder without crackling, or turn it down. Preview the level live — free, no watermark, never uploaded.
Open Volume boostAudio fade
Fade music in and outFade the sound of your video in at the start and out at the end — no abrupt cuts. 0 to 5 seconds each. Free, private, no watermark.
Open Audio fadeAdd music
Background music from any MP3Put any song behind your video. Pick where it starts, balance it with the original sound, fade it in and out. Free, private, no upload.
Open Add musicBrowse by category
Questions
Anything else? Write to contact@doetra.com.
Can I replace the sound of a video with music?
Yes — use "Add music" and set the original sound to 0%.
Which audio formats can I export?
MP3, M4A and WAV.
Is Doetra Video Studio really free?
Yes — every tool is free with no watermark, no signup and no file-size paywall. Your own device does the processing, so there is no server cost to pass on to you.
Are my videos uploaded anywhere?
No. Videos are opened, edited and exported entirely inside your browser. Nothing is sent to a server, which also makes it much faster than tools that make you upload first.
Can I combine several edits?
Yes — that is the idea. Drop your video once, stack edits like trim, resize for Reels, add text and fit under 16 MB, then export once. Every edit is applied in a single pass, so it is fast and loses less quality.