Comparison

IINA - The modern media player for macOS vs mpv.io

IINA - The modern media player for macOS lands on Worth it, and mpv.io lands on Depends.

IINA - The modern media player for macOS

Worth it

Confidence: Medium

Any Mac user who plays local video files should install it . it is free, open source, and plays nearly every format.

Depends

Confidence: Medium

Use it if you tinker, read manuals, and want a fast, no-frills player with deep playback control.

IINA - The modern media player for macOS versus mpv.io
Compare	IINA - The modern media player for macOS	mpv.io
Verdict	Worth it	Depends
Best for	Mac users with mixed-format video libraries	Tinkerers comfortable with config files
Who it's not for	iPhone/iPad users . no iOS or iPadOS app exists	Casual users wanting click-and-play playback
Privacy	No known public vulnerabilities found in the sources reviewed.^⁹	No active known issues in sources reviewed; one high-severity 2021 CVE, fixed in v0.33.1.
Support quality	Community project; no security page found	Project explicitly says 'NO SUPPORT HERE'
Public sentiment	Users widely recommend IINA as the best-looking free macOS player, though some find VLC lighter on old hardware.^⁷	Users praise its lightness and playback quality but consistently warn that setup and configuration take real effort.^⁶
Biggest gotcha	App Sandbox not enabled . think twice on managed or security-conscious Macs^⁹	No official support; community-only help via GitHub, Reddit, forums.