You can manually adjust the bitrate or resolution to hit a specific target size. Efficiency:

It sounds like you might be looking for information related to Wondershare Video Converter Ultimate (now known as UniConverter ), specifically regarding version compression (comp), or hotkeys/popular formats Software Advice

A built-in manager that grabs online videos and MP3 audio from over 1,000 sites, including YouTube and Vimeo, for offline viewing.