Trim unnecessary parts
Lower the resolution
Reduce the frame rate
Use a more efficient codec
Increase the compression level
Lower the video bitrate
Lower the audio bitrate
Remove or compress audio tracks
Convert to a smaller file format
Crop out unused areas of the frame
Shorten the video duration
Remove subtitles, chapters, and extra streams
Use two-pass encoding
Avoid unnecessary effects and overlays
Export with optimized settings for web or mobile use