G61032.mp4 -

Use VLC Media Player which supports almost all MP4 codecs.

If the file won't open, it might be corrupted. You can try online MP4 repair tools to recover the stream.

Right-click the file and select Properties (Windows) or Get Info (Mac) to see the "Origin" or "Description" fields, which may reveal the software that created it.

If you are unsure of the video's contents or how to open it, try these steps: