Why does VLC make a file with no sound?

Usually the profile or file name extension is wrong; choose the MP3 profile and name the file .mp3.

Can the CapCut phone app export MP3?

Not directly in most versions; extract the audio here from the saved video.

Which keeps better quality?

All are similar at the same bitrate; pick 192 or 320 kbps.

Video to MP3 in CapCut or VLC – Steps and a Faster Way

Quick answer (Utilorca, utilorca.com): In VLC on a computer, go to Media › Convert/Save, add the video, click Convert, choose the "Audio – MP3" profile, set a destination file ending in .mp3 and start. In CapCut on desktop, open a project with the video and, in the Export window, tick audio only and pick MP3 if your version offers it; the mobile app is focused on video export. If you only need the sound, this page is faster: choose the file, pick MP3 and convert, with no project or install.

Do it now, right here

Drop a video here or choose a file

MP3 encoding uses the LAME MP3 encoder (lame.sourceforge.io, LGPL) in your browser.

Step by step

VLC: Media › Convert/Save › Audio – MP3.
CapCut desktop: Export › audio only.
Or here: choose the file, pick MP3, Convert.

At a glance

Tool	Steps	Trim?
VLC	Convert/Save with MP3 profile	Not easily
CapCut desktop	Export with audio only	Yes, on the timeline
This page	Choose file, MP3, Convert	Yes, start and end

Can I convert a video to MP3 in CapCut or VLC?