It is possible to immediately transcode to a smaller size during the broadcast

Hello, when broadcasting online, and then transcoding automatically after broadcasting the video, the file turns out to be 1.5-2 times larger than if it is transcoded forcibly again. I.e. I conducted a broadcast, the video file is 100 mb, started re-transcoding, received 60 mb. The difference for storage is significant, and it is not entirely clear why this is so. Is it possible to change this? Thank you
After the broadcast


After re-transcoding