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doc: add libvpx encoder section
Documents the mapping from FFmpeg options to libvpx.
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@ -420,6 +420,119 @@ Selected by Encoder (default)
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A description of some of the currently available video encoders
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follows.
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@section libvpx
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VP8 format supported through libvpx.
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Requires the presence of the libvpx headers and library during configuration.
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You need to explicitly configure the build with @code{--enable-libvpx}.
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@subsection Options
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Mapping from FFmpeg to libvpx options with conversion notes in parentheses.
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@table @option
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@item threads
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g_threads
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@item profile
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g_profile
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@item vb
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rc_target_bitrate
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@item g
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kf_max_dist
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@item keyint_min
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kf_min_dist
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@item qmin
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rc_min_quantizer
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@item qmax
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rc_max_quantizer
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@item bufsize, vb
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rc_buf_sz
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@code{(bufsize * 1000 / vb)}
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rc_buf_optimal_sz
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@code{(bufsize * 1000 / vb * 5 / 6)}
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@item rc_init_occupancy, vb
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rc_buf_initial_sz
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@code{(rc_init_occupancy * 1000 / vb)}
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@item rc_buffer_aggressivity
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rc_undershoot_pct
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@item skip_threshold
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rc_dropframe_thresh
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@item qcomp
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rc_2pass_vbr_bias_pct
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@item maxrate, vb
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rc_2pass_vbr_maxsection_pct
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@code{(maxrate * 100 / vb)}
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@item minrate, vb
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rc_2pass_vbr_minsection_pct
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@code{(minrate * 100 / vb)}
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@item minrate, maxrate, vb
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@code{VPX_CBR}
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@code{(minrate == maxrate == vb)}
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@item crf
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@code{VPX_CQ}, @code{VP8E_SET_CQ_LEVEL}
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@item quality
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@table @option
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@item @var{best}
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@code{VPX_DL_BEST_QUALITY}
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@item @var{good}
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@code{VPX_DL_GOOD_QUALITY}
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@item @var{realtime}
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@code{VPX_DL_REALTIME}
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@end table
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@item speed
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@code{VP8E_SET_CPUUSED}
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@item nr
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@code{VP8E_SET_NOISE_SENSITIVITY}
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@item mb_threshold
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@code{VP8E_SET_STATIC_THRESHOLD}
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@item slices
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@code{VP8E_SET_TOKEN_PARTITIONS}
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@item Alternate reference frame related
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@table @option
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@item vp8flags altref
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@code{VP8E_SET_ENABLEAUTOALTREF}
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@item @var{arnr_max_frames}
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@code{VP8E_SET_ARNR_MAXFRAMES}
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@item @var{arnr_type}
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@code{VP8E_SET_ARNR_TYPE}
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@item @var{arnr_strength}
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@code{VP8E_SET_ARNR_STRENGTH}
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@item @var{rc_lookahead}
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g_lag_in_frames
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@end table
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@item vp8flags error_resilient
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g_error_resilient
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@end table
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For more information about libvpx see:
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@url{http://www.webmproject.org/}
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@section libx264
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H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 format supported through
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