If this is a technical requirement for a website or app upload, I can give you the exact bitrates needed to hit that target. Technical Breakdown (The "Feature" Specs)
Many sites offer "Low-Res" watermarked previews in this exact size range. 720p mp4(4.26 MB)
At a standard "web-friendly" bitrate of 2 Mbps, a 4.26 MB file would only be about 17 seconds long. If this is a technical requirement for a
To give you the most helpful "feature" or breakdown, I need to know your goal. Are you trying to: 720p mp4(4.26 MB)
If this is a file you are trying to create or optimize, here is what those specs usually represent: pixels (Standard HD).
Likely uses the H.264 (AVC) codec, which is the most compatible format for MP4 containers across all devices. Potential Contexts