Use the WhatsApp 16MB preset
When 16MB is enough
The WhatsApp page starts with a 16MB target because many users arrive after a video feels too large to share quickly. Short camera clips, short screen recordings, and compressed MP4 files may fit with 720p Balanced settings. The WhatsApp video compressor still treats the value as guidance because platform behavior, message type, source video, and receiving device can affect the final sharing experience.
When to lower resolution
If a clip is long, high-motion, 4K, or already encoded at a high bitrate, compress video to 16MB may require 480p or a shorter duration. Lowering resolution is often more predictable than crushing quality. The page explains this before users start, then repeats recovery options when a target is missed so the result is actionable.