Are there video players that display milliseconds on Mac?
If you have homebrew installed, you can install mpv (recommended) or IINA (based on mpv) which displays milliseconds.
If you do not have homebrew then you can install it by copying pasting the following in your terminal:
/bin/bash -c &quot;$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)&quot;

Solution 1:
Install mpv with the following command:
brew install mpv

mpv player supports url and a wide variety of video formats. That means you can play files locally as well as youtube or any other online video links straight from your terminal.
After installing mpv you can play your video file by going to the terminal and type:
mpv &lt;Drag the file you want to play from finder and hit enter&gt;

At the beginning when mpv will open, it will not show you milliseconds. You would have to click on top of the time for it to display milliseconds.
For details see: https://mpv.io/ and their git repo: https://github.com/mpv-player/mpv
Here is a screenshot of a non-copyright video playing from youtube with milliseconds displaying at the bottom:

Solution 2: Install iina with the following command:
brew install --cask iina

It should let you install version 1.1.2 which supports this feature.
You can choose the timestamp in miliseconds as shown in the following screenshot: