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FLV (FLV Header(9) (Signature(3) "FLV", Version( UI8 ),…

- - - - TagType( UB[5] )
        
        18 = script data
        
        9 = video
        
        8 = audio
      - DataSize( UI24 )
      - Timestamp( UI24 )
      - TimestampExtended( UI 8 )
      - StreamID( UI24 )
    - - AudioTag
        
        AudioTagHeader
        
        SoundFormat( UB[4] )
        
        SoundRate( UB[2] )
        
        SoundSize( UB[1] )
        
        SoundType( UB[1] )
        
        IF SoundFormat == 10 AACPacketType( UI8 )
        
        SoundData
      - VideoTag
        
        VideoTagHeader
        
        Frame Type ( UB[4] )
        
        CodecID ( UB [4] )
        
        AVCPacketType IF CodecID == 7 ( UI8 )
        
        CompositionTime IF CodecID == 7 ( SI24 )
        
        VideoTagBody
        
        IF AVCPacketType == 0
        AVCDecoderConfigurationRecord
        
        configurationVersion ( UI8 )
        
        AVCProfileIndication （ UI8 ）
        
        profile_compatibility （ UI8 ）
        
        AVCLevelIndication （ UI8 ）
        
        lengthSizeMinusOne - 0xff（ UI8 ）
        
        sps nums - 0xe1( UI8 )
        
        sps data length （ UI32 ）
        
        sps data ( N )
        
        pps nums （ UI8 ）
        
        pps data length （ UI16 ）
        
        pps data （ n ）
        
        IF AVCPacketType == 1
        One or more NALUs (Full frames are required)
        AVCC 封装
        
        NALU size ( UI32)
        
        NALU data
      - ScriptTag
        
        ScriptTagHeader
        
        Type ( UI8 )
        
        ScriptDataValue