... /H.264 transcoding, and multiplexing device with powerful functionality. It has 4 channel CVBS video input interfaces, 4 pairs of unbalanced ... /H.264 encoding formatSupports PAL and NTSC SD video formatsAudio MPEG-1 Layer1, Layer2, AACTranscode MPEG-2 SD/HD ... NTSCRate ControlAutomatic bit rate management (CBR, VBR)AudioEncodingMPEG-1 Layer 1, Layer 2,AACSampling rate32KHz,44.1KHz,48KHz,96KHz,192KHzBit ...