The Datavideo STC-100 is a high quality bi-directional standards converter. It can convert NTSC to PAL and PAL to NTSC from Component (YUV), S-Video (Y/C) or Composite (CVBS) video sources. The built in TBC ensures optimum quality is maintained. The STC-100 can also convert from 0 IRE to 7.5 IRE and also from one format to another.
 
https://www.bhphotovideo.com/c/product/435211-REG/Datavideo_STC_100_STC_100_Standards_Converter.html