Reducing video to 10–12 frames per second (FPS) significantly cuts the file size without making it unwatchable.
The King didn't rule with clarity. He ruled with accessibility. He allowed a child with a cheap, second-hand phone to watch a movie, hear a top-40 song, and laugh at a comedy skit—all inside a single megabyte. 3gp king only 1mb video
Converting stereo audio to 8kHz Mono strips away unnecessary data. Reducing video to 10–12 frames per second (FPS)
If you want absolute control, FFmpeg is the ultimate ruler. Use this command line: second-hand phone to watch a movie
For users looking to edit or convert these files on modern PCs, software like Pinnacle Studio or Gumlet's Online Player can manage 3GP formats. What Are 3GP Files? - Adobe