Datasheet

INS_CNVETX1_REV– 06/10/13 PAGE 119
INSTALLATION AND OPERATION MANUAL CNVETX1
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MPEG-4 Parameters
Table 24: MPEG-4 Parameters
Parameter Value/Range Default Description
rcmode VBR, CBR,
CONSTANT_Q
Constant_Q Rate Control Mode. No affect currently. CBR only
ngop 1 – 100 30 Size of GOP (distance between keyframes)
const_bit rate 50000 -10000000 4000000 Constant Bit rate: Applicable only when rcmode =
CBR.
Avg_bit rate 50000 -10000000 200000 Average Bit rate: Applicable only when rcmode =
VBR.
Max_bit rate 50000 -10000000 300000 Maximal Bit rate: Applicable only when rcmode =
VBR.
Qinit 8 - 30 8 Initial Quantization: Relevant for rcmode = CBR or
CONSTANT_Q.
H.264 Parameters
Table 25: H.264 Parameters
Parameter Value/Range Default Description
rcmode VBR, CBR,
CONSTANT_Q
Constant_Q Rate Control Mode. No affect currently. CBR only
ngop 1 – 100 30 Size of GOP (distance between keyframes)
const_bit rate 50000 -10000000 2000000 Constant Bit rate: Applicable only when rcmode =
CBR.
Avg_bit rate 50000 -10000000 2400000 Average Bit rate: Applicable only when rcmode =
VBR.
Max_bit rate 50000 -10000000 3000000 Maximal Bit rate: Applicable only when rcmode =
VBR.
Qmin 20 – 51 20 Minimum Quantization: Applicable only when
rcmode = CBR or VBR.
Qmax 25 – 51 51 Maximum Quantization: Applicable only when
rcmode = CBR or VBR.
Qinit 25 – 51 28 Initial Quantization: Relevant for rcmode = CBR or
CONSTANT_Q.