Generally, the recording file in WMV format with almost 2 minutes, only takes up 32MB, which is not a big size. If you still tend to reduce the size, there are two ways for you:
Way 1. Re-customize the output settings before recording.
For example, choose MP4 format, middle or low quality (if you think it is OK), and even reduce annotating operation in the recording.
In fact, those operation may influence the effect of the output video or audio. Thus, please re-consider and try.
Way 2. Compress the output file.
FonePaw Video Converter Ultimate can work for compressing video size.
Select Video Compressor feature > Add file > change the, size, format, resolution, bitrate, and storage location of your exported video > Preview and Compress.