# How to edit video and audio on separate tracks in your browser > A practical guide to arranging video and audio on separate tracks, checking the mix, reviewing captions and exporting a short browser-based edit. - Published: 2026-09-30 - Reading time: 3 min (~682 words) - Tags: studio, video editing, audio editing - Canonical: https://tautau.xyz/blog/multitrack-video-audio-editor ## Key takeaways - Separate tracks let you keep the picture, narration and other sound in one timed composition. - Mute duplicate microphones after aligning sources, then listen through transitions and watch the peak meter. - Studio is a browser-local preview for compositions up to ten minutes; keep your original files with any project backup. A camera clip can look fine on its own and still sound wrong beside a separately recorded microphone. The two files need a common clock, and you need to decide which audio should be heard. A multitrack timeline gives each source a place while you make those decisions. The [Studio preview](/studio) lets you load local video and audio into separate, editable tracks. You can move, trim, split, duplicate and delete clips, then undo while you compare versions. Its current composition limit is ten minutes, so start with a short scene or excerpt rather than a full-length production. The [Studio overview](/blog/studio) explains where this workspace fits in the wider suite. ## Start with the sources you actually need Drop files anywhere in Studio or use Import media. Each valid file loads onto its own track; one unsupported file does not block the rest. The media bin lets you add a source to the timeline again if you need another instance of it. Think about the audio before you cut. A camera may carry a scratch microphone alongside your cleaner recording. If both play together, you may hear an echo or a hollow, doubled voice. Studio's local matching can align distinct recordings when their sound overlaps reliably, but alignment does not choose a preferred microphone. Listen to the result, then mute the unwanted track or turn off Include clip audio for a camera clip. The [audio and video sync guide](/blog/sync-audio-and-video-browser) goes through uncertain matches and manual checks. ## Build the edit on one clock Drag a clip along its lane to set when it starts. For a precise adjustment, select it and enter Timeline start in the Inspector. Source in and Source out choose the portion of the original you want to use; the underlying file remains intact. Put the playhead inside a selected clip and Split when one part needs a different position or length. Overlaps are useful when they are intentional. You can leave narration running under a new shot or place two audio clips across a transition. The frontmost active video track supplies the picture. Preview the boundary between clips instead of judging each clip alone: a cut can expose a sudden change in room tone or a flash of the lower video track. Studio can also group one master audio source with two to four cameras. That separate workflow uses reviewed source anchors, then lets you choose shots on a picture-only programme track while the master audio continues. It does not select the best camera for you. For a conversation, see the [podcast video workflow](/blog/podcast-video-editing-workflow). ## Mix by listening, then check the meter Clip, track and master gain control different parts of the mix. Start at the clip if one recording is unusually loud. Use track gain when a whole microphone lane needs adjustment, and master gain for the combined output. Fades help at entrances and exits. A low-cut filter can reduce some low-frequency rumble, but it cannot rescue every noisy recording. Watch the stereo peak meter for monitor overload, then listen through the loudest section. A temporary solo is useful for diagnosis; it is an audition control, so export uses the saved mix. For a small pop or rumble in a selected source region, Studio also has reversible attenuation and filter repairs. Compare the current and proposed sound before keeping one. ## Export and preserve the edit Choose the whole composition or a timeline range. Video WebM produces a 720p picture with mixed sound; audio-only WebM keeps the mix without the picture. WebM renders in real time, so keep the tab visible. Supported short audio selections can export as 48 kHz stereo PCM16 WAV, with a 60-second limit and narrower source codec support. The [Studio guide](/docs/studio) lists the current formats and limits. The project autosaves with imported media in this browser. Save project downloads edit metadata and transcripts, not the original files. Keep those files with the backup, since browser storage can be cleared and a restored project may need its sources relinked. That small bit of housekeeping makes it easier to return to the edit after you have found the right cut. --- Markdown twin of https://tautau.xyz/blog/multitrack-video-audio-editor — provided for LLM/agent consumption. tautau is a speech-to-text Chrome extension and web app: https://tautau.xyz