I can spare little energy on this repository so please

https://github.com/sorayuki/VSFilterMod/network

vsfm.TextSubMod(clip clip, string file[, int charset=1, float fps=-1.0, string vfr='', int accurate=0])
vsfm.VobSub(clip clip, string file)

• clip: Clip to process. Only YUV420P8, YUV420P10, YUV420P16 and RGB24 are supported.
• accurate: 1: enable accurate render for 10/16bit (~2x slower). / 0: disable (default)

• Opentype font (such as Source Han Sans) has a much smaller size when displayed vertically (used like @Source Han Sans). (subtitle renders which origin from VSFilter use GDI to render fonts, but GDI performs badly on opentype fonts.)

1. run regsvr32.exe VSFilterMod.dll with administrator privileges
2. Select "VSFilter/xy-VSFilter" on the select of Options/Subtitles/Subtitle renderer