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IVAHD h264enc: Can it support AVCC format

Chris Meng
Mastermind 37646 points

Hi,

My customer wants to support AVCC format in h264enc as below.

avcc format:

| ([length of sps] NALU) | ([length of pps] NALU) | ([length of frame] NALU) |

I think IVAHD h264enc  can support annexb format as below.

([start code] NALU) | ( [start code] NALU) |

I found in h264enc user guide, that we can set IH264ENC_SliceCodingParams.streamFormat= IH264_NALU_STREAM  to let Bit-stream not contain the start code identifier. But how to add the length of sps/pps/frame?

Would you pls kindly advise if IVAHD h264enc supports AVCC format? If yes, how?

  • 0
    Expert 2325 points
    Hi Chris,

    IVAHD H264 Enc does not support AVCC Format as per mentioned definition by you. In case of streamFormat= IH264_NALU_STREAM, bit-stream will not have start code identifier as you mentioned.

    I per I know the use case of this streamFormat= IH264_NALU_STREAM is used in packet Transport protocol. So each NAL packet send separately & receiver will come to know based on the size of the packet. This way no need to have separate length.

    Regards
    Gajanan
  • 0 in reply to Gajanan Maske
    Expert 2325 points
    Hi Chris,

    IVAHD H264 Encoder directly does not support this but application can use the NALSIZE provided by Encoder and Transmit the packet with size of the packet.

    Regards
    Gajanan