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Encoder doesn't generate MPEG4 VOL header

Robert Smith
Intellectual 640 points

We are integrating TI C66x_mp4venc_02_04_01_02_ELF encoder into an application on C6678 based platform.

Occasionally I need to generate MPEG4 VOL header. I've followed the directions found in the following post:

http://e2e.ti.com/support/embedded/multimedia_software_codecs/f/356/t/8056.aspx

I set dynamicParams.generateHeader  = XDM_GENERATE_HEADER and call control function with XDM_SETPARAMS and then call process function.

However the process function doesn't generate anything and returns out_args.videncOutArgs.bytesGenerated equal to zero.

Can anyone advise what is wrong and how to generate MPEG4 VOL header in my case?

Thanks

  • 0
    TI__Expert 3715 points

    Robert,

    The code base referred to in the e2e link you posted is different from the C6678 code base and hence, the suggested fix didn't work.

    What we do in MCSDK_Video application is - we cache the VOL (actually complete DCI) from the first I-frame generated by the codec, outside of the codec (in RFC3016) and every time prior to shipping out a frame, we check if it is an I-frame and if it is, then we prepend the VOL information. If codec ever generates a new DCI, the cached stuff is over-written. 

    You can refer to rfc3016sendIn function at ti\mas\rfcs\src\video\RFC3016 folder in the installation of MCSDK Video for reference (http://software-dl.ti.com/sdoemb/sdoemb_public_sw/mcsdk_video/latest/index_FDS.html)

    Please let us know if it works for you.

    Regards,

    Vivek