Reducing your file size 5x

Okay I have an exported video HD 1080 mpeg format, almost 6 minutes long, and it's at 1.04G.  My goal is to export it again and make it no larger than 200MB (need to upload it to a fundraiser site and that's their file size limit). I can't see any way to tell how large a file will turn out to be during export, so if anyone has recommendations on settings and formats I should go with, so that I can retain maximum quality without exceeding 200MB, please let me know. Thanks!

200MB for 6 minutes is about 33MB (megabytes) per minute, or 0.55MB per second. Typically, video bit rate is expressed in "bits per second," whether it's kilobits or megabits. With 0.55MB per second required, that comes out to about 4.4Mbps (megabits per second). Expressed as Kbps, that would be about 4500Kbps. Of course, that's just video, so you'd have to factor in audio as well, but that's a much smaller slice of the pie.
Exporting at ~4500Kbps for 1080p video is not going to provide a lot of flexibility; your best shot is going to be to use H.264 with 2-pass encoding. Even then, the encoder built into Premiere is just not that great, so it's going to be tough especially if your video has a lot of motion. If you don't have to export in 1080p, and you can use a smaller frame size, that will let you spread the bits out quite a bit more and will give a better looking encode.

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