How to Mix YouTube Audio
Published August 18, 2026
This walks through combining audio from multiple YouTube clips into a single MP3 using the TubeMixLab mixer — adding clips, trimming each one, reordering them, and exporting the result.
1. Open the mixer
Go to the TubeMixLab mixer. It opens with one empty clip row already in place, ready for a YouTube link — you don't need to click anything to start.
2. Add your clips
Paste a YouTube URL into the clip's input field. TubeMixLab looks it up and fills in the title, channel and thumbnail automatically. Click "Add clip" below the list to add another row, paste the next URL, and repeat for every source you want in the mix.
If you already have several links copied as separate lines of text, you can paste all of them into one clip's input at once — TubeMixLab splits them and creates a clip for each line automatically.
3. Trim each clip
Once a clip resolves, it expands to show a waveform with In and Out handles. Drag either handle to select the exact section of that clip you want in the mix, or type exact times into the In and Out fields next to it. Click "Watch video" on a clip to preview it against the original YouTube video while you trim.
4. Reorder, fade and balance volume
Drag a clip by the grip handle at the left of its header to move it earlier or later in the mix. Each clip also has its own Fade in / Fade out fields (in seconds) and a volume slider, so you can smooth the transition into and out of a clip and balance louder sources against quieter ones.
5. Preview and export
The export preview below the clip list shows a segmented timeline of your mix and its total length, updating as you add, trim or reorder clips. When you're ready, click "Export Mix". TubeMixLab downloads the audio for each clip, cuts the sections you chose, and renders them into one MP3 — you'll see a progress bar while it works. When it finishes, you can play the result inline or download it.
Tips
- The clip title is editable — click into it and rename the clip if you're mixing several sources and want to keep track of which is which. This only changes what's shown on screen, not the exported file.
- Only what falls between a clip's In and Out handles is included in the export — the rest of that source video is left out.
- Mixing just one clip? The same trimming controls are available on the YouTube Audio Cutter, which is set up specifically for that single-clip workflow.
Frequently Asked Questions
Do I need an account to mix YouTube audio?
No. There's no signup and nothing to install — open the mixer and start adding clips.
How many clips can I add to one mix?
You can add as many clips as you need, from the same video or different ones.
Can I change a clip's trim after adding it?
Yes — drag the In/Out handles or edit the In/Out fields at any point before exporting. The waveform and export preview update immediately.
What if I only want to combine full videos, not trimmed sections?
Leave a clip's In handle at the start and Out handle at the end to include the whole thing — trimming is optional per clip.