JEITA CP-3451 - 62 - E.    Frame header (SOF: Start of Frame) SOF is a marker code indicating the start of a frame segment and giving various parameters for that frame (see Figure 22). DQT, DHT, DRI and SOF may line up in any order, but shall be recorded after APP1 (or APP2 if any) and before SOS. Address Offset Code Meaning (Hex) (Hex) +00 FF Marker Prefix +00 C0 SOF +02 00 Length of field 11 2+1+2+2+1+2*3 = 17 (Bytes) +04 08 Data precision (bits) +05 XX Vertical lines YY XXYY (Hex) lines +07 WW Horizontal lines ZZ WWZZ (Hex) pixels +09 03 Components +0A 01 Component number (1:Y) +0B 21or22 H0 = 2, V0 = 1(4:2:2) or 2(4:2:0) +0C 00 Quantization designation +0D 02 Component number (2:Cb) +0E 11 H1 =1, V1 = 1 +0F 01 Quantization designation +10 03 Component number (3:Cr) +11 11 H2 =1, V2 = 1 +12 02 Quantization designation Figure 22 SOF Structure