I am trying NVencoder H264 in 1080p and whatever I set for averageBitRate and maxBitRate (I want 9Mbit/s) I am getting same encoder output and bitrate 32Mbit/s.
Video codec SDK is 8.2.16 .
I think that some of the H264 parameters is blocking CBR option?
Please check my parameters and help:
GPU in use: GeForce GT 730
[-----] Encoding Parameters:
codec : h264
preset : ll
profile : (default)
chroma : yuv420
bitdepth : 8
rc : cbr_ll_hq
fps : 30000/1001
gop : INF
bf : 0
size : 1920x1080
bitrate : 9000000
maxbitrate : 9000000
vbvbufsize : 69840
vbvinit : 69840
aq : disabled
temporalaq : disabled
lookahead : disabled
cq :
qmin : P,B,I=0,0,0
qmax : P,B,I=0,0,0
initqp : P,B,I=0,0,0
[-----] NV_ENC_INITIALIZE_PARAMS:
encodeGUID: h264
presetGUID: ll
encodeWidth: 1920
encodeHeight: 1080
darWidth: 1920
darHeight: 1080
frameRateNum: 30000
frameRateDen: 1001
enableEncodeAsync: 1
reportSliceOffsets: 0
enableSubFrameWrite: 0
enableExternalMEHints: 0
enableMEOnlyMode: 0
enableWeightedPrediction: 0
maxEncodeWidth: 1920
maxEncodeHeight: 1080
maxMEHintCountsPerBlock: 000000658884CEF8
NV_ENC_CONFIG:
profile: (default)
gopLength: 4294967295
frameIntervalP: 1
monoChromeEncoding: 0
frameFieldMode: 1
mvPrecision: 3
NV_ENC_RC_PARAMS:
rateControlMode: 0x8
constQP: 28, 31, 25
averageBitRate: 9000000
maxBitRate: 9000000
vbvBufferSize: 69840
vbvInitialDelay: 69840
enableMinQP: 0
enableMaxQP: 0
enableInitialRCQP: 0
enableAQ: 0
qpMapMode: disabled
enableLookahead: 0
disableIadapt: 0
disableBadapt: 0
enableTemporalAQ: 0
zeroReorderDelay: 0
enableNonRefP: 0
strictGOPTarget: 0
aqStrength: 0
minQP: 0, 0, 0
maxQP: 0, 0, 0
initialRCQP: 0, 0, 0
temporallayerIdxMask: 0
temporalLayerQP: 0, 0, 0, 0, 0, 0, 0, 0
targetQuality:
lookaheadDepth: 0
NV_ENC_CODEC_CONFIG (H264):
enableTemporalSVC: 0
enableStereoMVC: 0
hierarchicalPFrames: 0
hierarchicalBFrames: 0
outputBufferingPeriodSEI: 0
outputPictureTimingSEI: 0
outputAUD: 0
disableSPSPPS: 0
outputFramePackingSEI: 0
outputRecoveryPointSEI: 0
enableIntraRefresh: 0
enableConstrainedEncoding: 0
repeatSPSPPS: 0
enableVFR: 0
enableLTR: 0
qpPrimeYZeroTransformBypassFlag: 0
useConstrainedIntraPred: 0
level: 0
idrPeriod: 4294967295
separateColourPlaneFlag: 0
disableDeblockingFilterIDC: 0
numTemporalLayers: 0
enableTemporalSVC: 0
spsId: 0
ppsId: 0
adaptiveTransformMode: 2
fmoMode: 0
bdirectMode: 0
entropyCodingMode: 1
stereoMode: 0
intraRefreshPeriod: 0
intraRefreshCnt: 0
maxNumRefFrames: 0
sliceMode: 3
sliceModeData: 4
NV_ENC_CONFIG_H264_VUI_PARAMETERS:
overscanInfoPresentFlag: 0
overscanInfo: 0
videoSignalTypePresentFlag: 0
videoFormat: 5
videoFullRangeFlag: 0
colourDescriptionPresentFlag: 0
colourPrimaries: 2
transferCharacteristics: 2
colourMatrix: 2
chromaSampleLocationFlag: 0
chromaSampleLocationTop: 0
chromaSampleLocationBot: 0
bitstreamRestrictionFlag: 1
ltrNumFrames: 0
ltrTrustMode: 0
chromaFormatIDC: 1
maxTemporalLayers: 0