[FFmpeg-trac] #10604(undetermined:new): NVENC: Video Codec Changes to Older Preset and RC Mode Support

[FFmpeg]

#10604: NVENC: Video Codec Changes to Older Preset and RC Mode Support
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             Reporter:  hydra3333    |                     Type:
                                     |  enhancement
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:  nvenc nvdec  |               Blocked By:
  nvidia sdk                         |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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 Hello.  Looks like older presets are being removed, which could mean
 changes may be needed to ffmpeg.

 Hello, I received an email with this info:

 Planned rollout in 2024. What to Know About This Update

 The NVIDIA Video Codec SDK is working towards updates regarding preset
 support. In this update support for older presets will be removed.

 Background:
 •       Video Codec SDK introduced new presets (p1-p7) and RC modes for
 H264 and HEVC in Video Codec SDK 10.0 in June 2020. This was done to
 simplify the usage of NVENC presets.
 •       Older presets and RC modes are currently supported in four SDK
 versions (10.0, 11.0, 11.1, 12.0).
 •       The older presets and RC modes support only HEVC and H.264. AV1 or
 new features such as split encode, encode quality improvements done post
 v10.0 are not supported.
 •       In SDK 12.1, the older presets and RC modes were removed from the
 Video SDK C header.
 •       Video Codec SDK supports backward compatibility. Applications
 compiled with SDK versions < 10.0 using older presets and older RC modes
 are supported in the driver.
 Future steps:
 •       The plan is to remove driver support in R550 (Q1’24). Therefore,
 all applications compiled with older presets/RC modes will stop working if
 upgraded to R550 drivers.
 •       The R545 will be the last driver release which will support the
 older presets and RC modes. The R545 release notes will have the final
 warning included.
 Migration guide:
 •       NVIDIA has provided a migration guide (NVENC Preset Migration
 Guide - NVIDIA Docs) to enable a seamless transition to the new NVENC API
 preset architecture.
 •       Please refer to the link below for details regarding HEVC, H.264
 migration tables.

 Learn More https://docs.nvidia.com/video-technologies/video-codec-sdk/12.1
 /nvenc-preset-migration-guide/index.html
 (has a list of preset mappings)
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Ticket URL: <https://trac.ffmpeg.org/ticket/10604>
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