GUIDE深度 · Deep dive
WAV vs MP3 vs M4A
WAV is lossless/large and best for editing; MP3/M4A are lossy/small for sharing/web; OGG is open but less compatible than MP3. Browser playback depends on container/codec, not the extension. For a one-off trim, export WAV from this page, then convert once to the target format instead of re-encoding repeatedly.
Editing: WAV.
Web/sharing: MP3/M4A.
Open format: OGG.
Lossy-to-lossy accumulates loss.
Export once from the original.
FAQ
Is WAV always better?
For quality/editing yes, but it's large and inefficient for web sharing.
Can I rename the extension?
No; the container/codec is unchanged.