[FFmpeg-trac] #5390(avcodec:new): Nvenc Based HEVC Encoding Compability Fix

[FFmpeg]

#5390: Nvenc Based HEVC Encoding Compability Fix
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             Reporter:               |                     Type:  defect
  smallishzulu                       |                 Priority:  important
               Status:  new          |                  Version:  git-
            Component:  avcodec      |  master
             Keywords:  nvenc, aud   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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 Hello,

 Nvidia Nvenc bassed HEVC encoding need Access Unit Delimeters based on
 HEVC specification:

 Access Unit Delimiter, which is mandatory.
 ITU-T H.222.0 Amendment 3 (01/2014)
 14 Clause 2.17
 2.17 Carriage of HEVC
 2.17.1 Constraints for the transport of HEVC
 Each HEVC access unit shall contain an access unit delimiter NAL unit;

 Currently, nvenc HEVC coding does not enable AUD which causes LG and Sony
 TVs unable to decode FFmpeg generated MPEGTS streams.

 The Fix is:

 libavcodec/nvenc.c Line 951:

 951:   case AV_CODEC_ID_H265:
 952:
 ctx->encode_config.encodeCodecConfig.hevcConfig.hevcVUIParameters.colourMatrix
 = avctx->colorspace;

 Needs to be changed to:

 951:   case AV_CODEC_ID_H265:
 952:        ctx->encode_config.encodeCodecConfig.hevcConfig.outputAUD = 1;
 953:
 ctx->encode_config.encodeCodecConfig.hevcConfig.hevcVUIParameters.colourMatrix
 = avctx->colorspace;

 So Access Unit Delimiter for HEVC Encoding is Enabled.
 Problem is fixed for Sony and LG TVs in decoding.

 Regards,

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Ticket URL: <https://trac.ffmpeg.org/ticket/5390>
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