If you don't want to install any software and your internet connection is decent, online tools are the easiest route. : FreeConvert, VideoSmaller , or Clideo .
The Mystery of the Massive 360p File: How to Fix Bloated MP4s
A 286 MB file for 360p resolution is massive. To put that into perspective, a standard 360p video usually takes up only about 5 to 10 megabytes per minute. If you are looking at a 286 MB file for a relatively short video, something is definitely off under the hood.
: Bitrate is the amount of data processed per second. If the video was exported with a bitrate meant for 1080p or 4K, the file size will explode, even if the resolution is locked at 360p.
: Go to the Video tab and ensure the Video Codec is set to H.264 or H.265 .
Resolution (360p) only tells part of the story. The physical size of a video file is actually determined by a combination of factors:
: Older or less efficient encoding settings can fail to compress the video data properly.