24643mp4 [RECOMMENDED]

Ensure it ends in .mp4 . If it was renamed or the extension was lost, the player won't recognize it.

Apps like WhatsApp or Telegram occasionally rename files with internal strings during compression or transfer. 24643mp4

To find out what "24643mp4" actually contains without watching the whole thing, you can look at the metadata: Right-click > Properties > Details. Mac: Right-click > Get Info. Ensure it ends in