Use QuickTime Player , which natively supports MP4 files.
For a Mac, QuickTime supports MP4 and on Windows, you can use Windows Media Player. How to play MP4 files in Windows - Microsoft Support
Use the Clideo MP4 to MP3 tool or HappyScribe to pull the audio from the file. 🖥️ Viewing the File 0ha8sap1ng2b6ys7wpf02_source.mp4
For more advanced control, HandBrake can be used to adjust the technical specifications (like resolution or frame rate) before you bring it into a professional editor. 🔊 Extract Audio
You can upload the MP4 to the Adobe Express Video Editor to trim the clip, add text overlays, and apply filters. Use QuickTime Player , which natively supports MP4 files
If you are trying to turn this clip into a short-form "feature" (like a TikTok, Reel, or YouTube Short), you can use free tools to add music, captions, and effects:
If you simply need to see what the file is before editing it: 🖥️ Viewing the File For more advanced control,
If the "feature" you want is actually the soundtrack or a podcast-style clip, you can convert the MP4 into an MP3: