God uses VideoStudio to separate 5.1 channels. If you don’t know how to do it, please don’t mislead people upstairs. Can I use AU to create 5.1 channel files or use VideoStudio? Still dragging the video? It’s not troublesome! Do you understand that people want to separate 5.1 channel files? I'll tell you how to split it. Go to the next unpacking software. Any unpacking software can split MKV videos and 5.1 channels. You just need to choose the channel you want to extract. If you are not sure which channel to extract, use PR2019 to open your audio file, adjust the 5.1 channel display in it, and you can see how many channels there are and what each channel is.