Encode video nvidia cuda toolkit4/3/2023 ![]() To improve your NVENC transcoding experience, please also take a look at Transcoder troubleshooting covering most frequent questions. Live Transcoder also supports NVidia hardware decoding. These are the parameters which you can use already in order to control NVidia video encoding hardware acceleration. Driver will divide picture into slices optimally sliceMode=3, sliceModeData specifies number of slices in the picture.sliceMode=2, sliceModeData specifies # of MB rows in each slice(except last slice).sliceMode=1, sliceModeData specifies maximum # of bytes in each slice(except last slice).sliceMode=0, sliceModeData specifies # of MBs in each slice(except last slice).When sliceMode = 0 and sliceModeData = 0 whole picture will be coded with one slice Specifies the way in which the picture is divided into slices. auto - Entropy coding mode is auto selected by the encoder driver.auto - BDirect mode is auto selected by the encoder driver.auto - FMO usage is auto selected by the encoder driver.enable - ptive Transform 8x8 mode should be used.disable - Adaptive Transform 8x8 mode disabled.auto - Adaptive Transform 8x8 mode is auto selected by the encoder driver.Set to 1 to enable 4:4:4 separate colour planes Set 1 to enable constrained intra prediction. Set this to 1 to enable constrainedFrame encoding where each slice in the constarined picture is independent of other slices This value should be smaller than intraRefreshPeriod. Length of intra refresh in number of frames for periodic intra refresh. Interval between successive intra refresh. If the GOP structure uses B frames this will be ignored Maximum depth of lookahead with range 0-32 (only used if enableLookahead=1)ĭisable adaptive I-frame insertion at scene cuts (only has an effect when lookahead is enabled).ĭisable adaptive B-frame decision (only has an effect when lookahead is enabled)Įnable intra refresh. Set to enable to minimize GOP-to-GOP rate fluctuations quarter_pel - NV_ENC_MV_PRECISION_QUARTER_PELĪQ strength scale is from 1 (low) - 15 (aggressive).half_pell - NV_ENC_MV_PRECISION_HALF_PEL.Specifies the desired motion vector prediction precision. mbaff - NV_ENC_PARAMS_FRAME_FIELD_MODE_MBAFF.filed - NV_ENC_PARAMS_FRAME_FIELD_MODE_FIELD.frame - NV_ENC_PARAMS_FRAME_FIELD_MODE_FRAME.Target Constant Quality level for VBR mode (range 0-51 with 0-automatic) Įnable lossless encode as following: sets QP to 0 and RC_mode to NV_ENC_PARAMS_RC_CONSTQP and profile to HIGH_444_PREDICTIVE_PROFILE. Specifies the initial QP used for rate control Specifies the maximum QP used for rate control ![]() Specifies the minimum QP used for rate control Specifies the initial QP to be used for encoding, these values would be used for all frames if in CQP mode. Specifies the VBV(HRD) buffer size in Kbits. Specifies the VBV(HRD) initial delay in Kbits. ll_2pass_size - Multi pass encoding optimized for maintaining frame size and works only with low latency mode.ll_2pass_quality - Multi pass encoding optimized for image quality and works only with low latency mode.vbr_minqp - ariable bitrate mode with MinQP.Please also check Handling fuzzy FPS to get proper bitrate output article. Source stream FPS or filter FPS is used if fps_n and fps_d are not set. It only affects num_units_in_tick and time_scale fields in SPS. Set output FPS numerator and denominator. The low latency application which wants to invalidate reference frame as an error resilience tool is recommended to use a large DPB size so that the encoder can keep old reference frames which can be used if recent frames are invalidated. Setting it to 0 will let driver use the default dpb size. Specifies the DPB size used for encoding. Specifies maximum number of B frames between non-B-frames. Number of pictures within the current GOP (Group of Pictures). ![]()
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