blackmagic design mini converter hdmi to sdi 4k (convmbhs24k) blackmagic design using 4k hdmi and 6g-sdi technologies, the mini converter supports resolutions up to uhd 4k at up to 30 fps and dci 4k at 24 fps. it automatically detects the input video format and instantly changes between sd, hd, and uhd/dci 4k formats. the two 6g-sdi outputs also support sd and hd-sdi signals for integration into existing workflows. both 6g-sdi outputs send duplicate signals. audio is embedded in the sdi output from either the hdmi input or from the two 1/4" input jacks which support 2-channel aes/ebu digital audio or balanced analog audio.