Related tools
WebM Replace Audio
New soundtrack on WebM in your browser. Optional MP4 for universal playback.
WebM is common for screen capture and HTML5. Replace the audio before you hand off — export WebM or MP4 for your audience.
When to use WebM Replace Audio vs other formats
WebM-focused for VP8/VP9 assets. Mixed devices often want MP4 after processing.
Compatibility
Safari on iOS may prefer MP4 — choose MP4 output when needed.
Quality considerations
Screencast audio swaps still need level checks for voice vs music.
Example use cases
- New VO on tutorial WebM.
- Music on demo capture.
- Web preview with updated mix.
Best practices
- Export MP4 for iOS if unsure.
- Keep original WebM.
- Avoid clipping after loudness change.
Common use cases
- Docs — Updated narration on captures.
- Dev — Clean audio on bug repro clips.
- Marketing — Licensed music on promos.
- Review — MP4 handoff for stakeholders.
- Storage — Alt mix beside master.
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