Hello mangovid1111,
Thank you for your post.
Video Splitter for Mac will work on m1 Mac computer.
I would like to draw your attention to the fact that version of Video Splitter for Mac has the less features then version for Windows.
For example, the range of supported files is different.
The Mac version of Video Splitter supports MP4 and MPEG-TS files with HEVC and AVC codecs, while version for Windows supports AVCHD, MP4, MOV, MKV, WEBM, FLV, AVI, DV AVI, ASF, WMV, MPEG2(TS,PS,VES), MPEG1(SYS, VES), MP1, MP2, MP3, WAV files with H265/HEVC, H264/AVC, MPEG-1, MPEG-2, MPEG-4, DIVX, XVID, MJPEG, WMV1, WMV2, WMV3, MPEG Audio, PCM, AC3, AAC codecs.