x264 preset and tune options

[ReenigneArcher]

In the config example this is present:

##################################### Software #####################################
# See x264 --fullhelp for the different presets
# sw_preset  = superfast
# sw_tune    = zerolatency

The issue is the end user cannot run x264 --fullhelp

From some quick research this is a library provided by VideoLan for FFMPEG. Because neither the x264 or ffmpeg binary that are included with sunshine are exposed it's not possible to return a list of supported presets or tune options.

The user could add their own binary of x264; however this won't necessarily match what is shipped with Sunshine.

Please add an argument to return a list of available preset and tune options, or alternatively expose the ffmpeg/x264 binaries. Another option would be to list the available options in the config example or have a drop down in the web gui (I don't believe the preset names changes all that often, if ever).

Unless I am mistaken, these are the available options:

• presets
  • ultrafast
  • superfast
  • veryfast
  • faster
  • fast
  • medium
  • slow
  • slower
  • veryslow
  • placebo
• tune
  • film
  • animation
  • grain
  • stillimage
  • psnr
  • ssim
  • fastdecode
  • zerolatency

[TheElixZammuto]

#256 adds the list inside the description of the presets inside the Web UI. I prefered to use the test field instead of the combo box simply because the value is parsed as a string and passed directly into x264 options inside ffmpeg