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Sep 14th, 2021
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  1. Presets:
  2.  
  3. --profile <string> Force the limits of an H.264 profile
  4. Overrides all settings.
  5. - baseline:
  6. --no-8x8dct --bframes 0 --no-cabac
  7. --cqm flat --weightp 0
  8. No interlaced.
  9. No lossless.
  10. - main:
  11. --no-8x8dct --cqm flat
  12. No lossless.
  13. - high:
  14. No lossless.
  15. - high10:
  16. No lossless.
  17. Support for bit depth 8-10.
  18. - high422:
  19. No lossless.
  20. Support for bit depth 8-10.
  21. Support for 4:2:0/4:2:2 chroma subsampling.
  22. - high444:
  23. Support for bit depth 8-10.
  24. Support for 4:2:0/4:2:2/4:4:4 chroma subsampling.
  25. --preset <string> Use a preset to select encoding settings [medium]
  26. Overridden by user settings.
  27. - ultrafast:
  28. --no-8x8dct --aq-mode 0 --b-adapt 0
  29. --bframes 0 --no-cabac --no-deblock
  30. --no-mbtree --me dia --no-mixed-refs
  31. --partitions none --rc-lookahead 0 --ref 1
  32. --scenecut 0 --subme 0 --trellis 0
  33. --no-weightb --weightp 0
  34. - superfast:
  35. --no-mbtree --me dia --no-mixed-refs
  36. --partitions i8x8,i4x4 --rc-lookahead 0
  37. --ref 1 --subme 1 --trellis 0 --weightp 1
  38. - veryfast:
  39. --no-mixed-refs --rc-lookahead 10
  40. --ref 1 --subme 2 --trellis 0 --weightp 1
  41. - faster:
  42. --no-mixed-refs --rc-lookahead 20
  43. --ref 2 --subme 4 --weightp 1
  44. - fast:
  45. --rc-lookahead 30 --ref 2 --subme 6
  46. --weightp 1
  47. - medium:
  48. Default settings apply.
  49. - slow:
  50. --direct auto --rc-lookahead 50 --ref 5
  51. --subme 8 --trellis 2
  52. - slower:
  53. --b-adapt 2 --direct auto --me umh
  54. --partitions all --rc-lookahead 60
  55. --ref 8 --subme 9 --trellis 2
  56. - veryslow:
  57. --b-adapt 2 --bframes 8 --direct auto
  58. --me umh --merange 24 --partitions all
  59. --ref 16 --subme 10 --trellis 2
  60. --rc-lookahead 60
  61. - placebo:
  62. --bframes 16 --b-adapt 2 --direct auto
  63. --slow-firstpass --no-fast-pskip
  64. --me tesa --merange 24 --partitions all
  65. --rc-lookahead 60 --ref 16 --subme 11
  66. --trellis 2
  67. --tune <string> Tune the settings for a particular type of source
  68. or situation
  69. Overridden by user settings.
  70. Multiple tunings are separated by commas.
  71. Only one psy tuning can be used at a time.
  72. - film (psy tuning):
  73. --deblock -1:-1 --psy-rd <unset>:0.15
  74. - animation (psy tuning):
  75. --bframes {+2} --deblock 1:1
  76. --psy-rd 0.4:<unset> --aq-strength 0.6
  77. --ref {Double if >1 else 1}
  78. - grain (psy tuning):
  79. --aq-strength 0.5 --no-dct-decimate
  80. --deadzone-inter 6 --deadzone-intra 6
  81. --deblock -2:-2 --ipratio 1.1
  82. --pbratio 1.1 --psy-rd <unset>:0.25
  83. --qcomp 0.8
  84. - stillimage (psy tuning):
  85. --aq-strength 1.2 --deblock -3:-3
  86. --psy-rd 2.0:0.7
  87. - psnr (psy tuning):
  88. --aq-mode 0 --no-psy
  89. - ssim (psy tuning):
  90. --aq-mode 2 --no-psy
  91. - fastdecode:
  92. --no-cabac --no-deblock --no-weightb
  93. --weightp 0
  94. - zerolatency:
  95. --bframes 0 --force-cfr --no-mbtree
  96. --sync-lookahead 0 --sliced-threads
  97. --rc-lookahead 0
  98. --slow-firstpass Don't force these faster settings with --pass 1:
  99. --no-8x8dct --me dia --partitions none
  100. --ref 1 --subme {2 if >2 else unchanged}
  101. --trellis 0 --fast-pskip
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