Upload your MP4 file using the picker above and the converter detects the source type and runs the MP4 -> AUDIO pipeline. The result downloads automatically when conversion completes; no account needed for one-off conversions.
Is the MP4 to AUDIO converter free?
+
Yes — basic MP4 -> AUDIO conversion is free with no registration. Pro adds higher per-file size caps, more parallel batch workers, removes ads, and unlocks API access for AUDIO output.
How big a MP4 file can I convert to AUDIO?
+
Free accounts: up to 100 MB per MP4 file. Pro: typically 1 GB per file, depending on the MP4 type. Very large files are split into chunks server-side when the AUDIO format allows.
Will conversion change the content of my MP4?
+
Conversion preserves all information that both MP4 and AUDIO can represent. Format-specific features that AUDIO does not support (e.g. vector data in raster output, formulas in plain-text output) are rasterized or stripped — see the format-specific notes on the result page.
Can I convert many MP4 files to AUDIO at once?
+
Yes — drop multiple MP4 files into the upload zone and they queue in parallel. Pro has more parallel workers; on a 50-file batch this is the difference between minutes and seconds.
Does the MP4 to AUDIO converter work on phones / tablets?
Yes — uploaded MP4 files are processed in isolated workers and deleted within minutes. We never view, retain, or share content. See /privacy/ for the data-retention window.
如果...AUDIO... 下载不自动启动呢?
+
Disable any pop-up blocker, then click the download button manually. The result link stays active for 24 hours, so if your network fails mid-download you can re-trigger from the result page without re-uploading the MP4.