[FFmpeg-trac] #448(avcodec:new): libx264 preset's rc_lookahead value is overwritten

[FFmpeg]

#448: libx264 preset's rc_lookahead value is overwritten
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             Reporter:  rectalogic  |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by rectalogic):

 It looks like other x264 preset options have the same issue, these options
 have their "slow" preset defaults changed due to the default value of
 avctx->flags2:
 ||= param =||= preset value =||= value used =||
 || x4->params.i_bframe_pyramid || X264_B_PYRAMID_NORMAL ||
 X264_B_PYRAMID_NONE ||
 || x4->params.analyse.b_transform_8x8 || 1 || 0 ||
 || x4->params.analyse.b_weighted_bipred || 1 || 0 ||
 || x4->params.analyse.b_mixed_references || 1 || 0 ||

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/448#comment:1>
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