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HEVC Encoder low bitrate configuration

YC, Tsai
Intellectual 590 points

Hi

I have some questions

1. HEVC encoder supported bitrate range

2. Is there any HEVC encoder low bitrate configuration for IBBP 720p/1080p ?

e.g 800kbps, 1Mbps, 1.5Mbps, 2Mbps...etc

Or teach me which parameter should be modified in codecParams.cfg to control the encoder bitrate, thank you

 

Regards,

YC

  • 0
    Intellectual 785 points

    Hi YC,   

         1) We support bitrate from 50kbps - 100Mbps.   

         2) As we don't have any Low bitrate configuration. Generally We work with 1Mpbs - 10Mbps for 1080p and 512kbps - 5 Mbps for 720p.   

    Below i have mention which are the parameter controls the bitare:

    static_param2   = 5          # rateControlPreset 1 : CBR , 2 : VBR ,

    static_param7   = 100000000  # maxBitRate                                      

    static_param8   = 50000      # minBitRate

    static_param37  = 4000000    # initialBufferLevel (For CBR: 0.5*Bitrate and For VBR: 2*Bitrate)    

    static_param38  = 4000000    # hrdBufferSize (For CBR: 0.5*Bitrate and For VBR: 2*Bitrate)

    dynamic_param3   = 50000     # refFrameRate           

    dynamic_param4   = 50000     # targetFrameRate        

    dynamic_param5   = 2000000   # targetBitRate (5000 - 100000000)

    dynamic_param38  = 4000000   # initialBufferLevel (For CBR: 0.5*Bitrate and For VBR: 2*Bitrate)     dynamic_param39  = 4000000   # hrdBufferSize (For CBR: 0.5*Bitrate and For VBR: 2*Bitrate)

    Regards

    Kuladeepak

  • 0 in reply to Kuladeepak Gowda
    Intellectual 590 points

    Hi Kuladeepak,

    Thank you for your prompt reply. I am assume that bitrate is determined by dynamic_param5, right?

     

    Regards,

    YC

  • 0 in reply to YC, Tsai
    Intellectual 785 points

    Hi YC,

       Yes, dynamic_param5 is controlling parameter, provided it should be within Max(static_param7) and Min bitrate(static_param8).

    Regards

    Kuladeepak