104 lines
2.8 KiB
Text
104 lines
2.8 KiB
Text
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- doc/encoders: update default coder for aac
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- doc/encoders: add available values for libsvtav1 options
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- avcodec/libsvtav1: add a svtav1-params option to pass a list of key=value
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parameters
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- avcodec/libsvtav1: update some options and defaults
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Index: doc/encoders.texi
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--- doc/encoders.texi.orig
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+++ doc/encoders.texi
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@@ -53,7 +53,7 @@ Set AAC encoder coding method. Possible values:
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@table @samp
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@item twoloop
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-Two loop searching (TLS) method.
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+Two loop searching (TLS) method. This is the default method.
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This method first sets quantizers depending on band thresholds and then tries
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to find an optimal combination by adding or subtracting a specific value from
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@@ -75,7 +75,6 @@ Constant quantizer method.
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Uses a cheaper version of twoloop algorithm that doesn't try to do as many
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clever adjustments. Worse with low bitrates (less than 64kbps), but is better
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and much faster at higher bitrates.
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-This is the default choice for a coder
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@end table
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@@ -1747,27 +1746,29 @@ You need to explicitly configure the build with @code{
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@table @option
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@item profile
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Set the encoding profile.
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+@table @samp
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+@item main
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+@item high
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+@item professional
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+@end table
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@item level
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-Set the operating point level.
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+Set the operating point level. For example: '4.0'
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+@item hielevel
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+Set the Hierarchical prediction levels.
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+@table @samp
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+@item 3level
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+@item 4level
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+This is the default.
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+@end table
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+
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@item tier
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Set the operating point tier.
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-
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-@item rc
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-Set the rate control mode to use.
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-
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-Possible modes:
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-@table @option
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-@item cqp
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-Constant quantizer: use fixed values of qindex (dependent on the frame type)
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-throughout the stream. This mode is the default.
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-
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-@item vbr
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-Variable bitrate: use a target bitrate for the whole stream.
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-
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-@item cvbr
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-Constrained variable bitrate: use a target bitrate for each GOP.
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+@table @samp
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+@item main
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+This is the default.
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+@item high
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@end table
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@item qmax
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@@ -1776,6 +1777,9 @@ Set the maximum quantizer to use when using a bitrate
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@item qmin
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Set the minimum quantizer to use when using a bitrate mode.
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+@item crf
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+Constant rate factor value used in crf rate control mode (0-63).
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+
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@item qp
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Set the quantizer used in cqp rate control mode (0-63).
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@@ -1786,14 +1790,18 @@ Enable scene change detection.
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Set number of frames to look ahead (0-120).
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@item preset
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-Set the quality-speed tradeoff, in the range 0 to 8. Higher values are
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-faster but lower quality. Defaults to 8 (highest speed).
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+Set the quality-speed tradeoff, in the range 0 to 13. Higher values are
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+faster but lower quality.
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@item tile_rows
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Set log2 of the number of rows of tiles to use (0-6).
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@item tile_columns
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Set log2 of the number of columns of tiles to use (0-4).
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+
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+@item svtav1-params
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+Set SVT-AV1 options using a list of @var{key}=@var{value} pairs separated
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+by ":". See the SVT-AV1 encoder user guide for a list of accepted parameters.
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@end table
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