FS4 is a 4-Channel 2K/HD/SD or 1-Channel 4K/UltraHD frame synchronizer and up, down, cross-converter. AJA’s flagship frame synchronizer and converter offers incredible versatility and connectivity in a sleek 1RU frame for all your 4K/UltraHD and 2K/HD/SD conversion needs. Offering a wide range of connection options for both video and audio, FS4 can do the work of four separate devices in 2K/HD/SD or combine all processors and channels together for maximum flexibility for 4K/UltraHD up, down, cross-conversion to and from 2K/HD/SD. FS4’s digital audio prowess includes incredible audio embedding and disembedding with routing in an 277 by 208 audio matrix across SDI embedded audio, AES and MADI. FS4 also includes industry proven features such as RGB color correction, Region of Interest scaling for 2K/HD and SD, web UI control, GPI triggers and more.