user17778: I recently got a Nikon Z7 and I've been playing with its ability to shoot 120 fps at 1080p and then make slow-motion 30fps (or even 24 fps) videos from it.   A 120 fps video can be used to generate a slower-fps video using Premiere Pro or even ffmpeg if you don't dialing your Wayback machine to 1983 and typing in a command line.
But if I have a bunch of 120 fps videos and I want to select the one that looks best, I just want to VIEW them at a slower playback speed.
Is there any way to do that either in-camera or with some simple Windows app?

user31818: If you want to view at slower playback speed, would videoLan help?
Menu->Playback->Speed->Slower 

then check if the speed at 0.25x is it what you want.

17778: <p>I recently got a Nikon Z7 and I've been playing with its ability to shoot 120 fps at 1080p and then make slow-motion 30fps (or even 24 fps) videos from it.   A 120 fps video can be used to generate a slower-fps video using Premiere Pro or even ffmpeg if you don't dialing your Wayback machine to 1983 and typing in a command line.</p>
<p>But if I have a bunch of 120 fps videos and I want to select the one that looks best, I just want to <strong>VIEW</strong> them at a slower playback speed.<br />
Is there any way to do that either in-camera or with some simple Windows app?</p>
 31818: <p>If you want to view at slower playback speed, would videoLan help?</p>
<pre><code>Menu-&gt;Playback-&gt;Speed-&gt;Slower 
</code></pre>
<p>then check if the speed at 0.25x is it what you want.</p>
