[FFmpeg-trac] #5818(avcodec:new): encoing to interlaced with nvenc

[FFmpeg]

#5818: encoing to interlaced with nvenc
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             Reporter:  milanc         |                    Owner:
                 Type:  enhancement    |                   Status:  new
             Priority:  wish           |                Component:  avcodec
              Version:  git-master     |               Resolution:
             Keywords:  nvenc, bounty  |               Blocked By:
             Blocking:                 |  Reproduced by developer:  0
Analyzed by developer:  0              |
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Comment (by Brainiarc7):

 You can attempt interlaced encoding on NVENC provided that:

 (a). You're using an NVENC-capable GPU older than Turing. Turing GPUs
 inexplicably disabled interlaced encoding.

 (b). The following flags are set before input:
 {{{-flags +ildct+ilme}}}.

 Alternatively (or in combination with the above), insert the filter
 {{{-vf tinterlace=interleave_top,fieldorder=tff}}} and retest.

 An older thread courtesy of Google which may still be relevant:
 https://devtalk.nvidia.com/default/topic/1043798/video-codec-and-optical-
 flow-sdk/possible-driver-bug-or-sdk-bug-related-to-encoding-interlaced-
 video-with-nvenc/

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Ticket URL: <https://trac.ffmpeg.org/ticket/5818#comment:8>
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