(1).mp4: Flick

: If you can't delete or move it, a background app (like a video editor) might still have it open. Restart your device to "release" the file.

: Use the default Photos or Gallery app. If it won't play, the file might be corrupted or use a specific high-efficiency codec (like H.265) that requires an update.

: Apps like TikTok, Instagram, or X (Twitter) often use short, generic names when you save a video to your device.

: Use VLC Media Player —it is the "Swiss Army Knife" of video players and can handle almost any codec.

: Some mobile screen recording tools default to "flick" as a naming convention.