[FFmpeg-devel,v7,2/2] doc: Add libsvt_hevc encoder docs

Submitted by Jing SUN on March 19, 2019, 6:16 a.m.


Message ID C5AB7166D8288A4698415C150FD56DBA2642FB14@SHSMSX104.ccr.corp.intel.com
State New
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Jing SUN March 19, 2019, 6:16 a.m.
-----Original Message-----
From: Sun, Jing A 
Sent: Monday, March 11, 2019 3:02 PM
To: ffmpeg-devel@ffmpeg.org
Cc: Sun, Jing A <jing.a.sun@intel.com>; Jun Zhao <jun.zhao@intel.com>; Huang, Zhengxu <zhengxu.huang@intel.com>; Tmar, Hassene <hassene.tmar@intel.com>
Subject: [PATCH v7 2/2] doc: Add libsvt_hevc encoder docs

Add docs for libsvt_hevc encoder in encoders.texi and general.texi

Signed-off-by: Jun Zhao <jun.zhao@intel.com>
Signed-off-by: Huang, Zhengxu <zhengxu.huang@intel.com>
Signed-off-by: hassene <hassene.tmar@intel.com>
Signed-off-by: Jing SUN <jing.a.sun@intel.com>
 doc/encoders.texi | 145 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 doc/general.texi  |   8 +++
 2 files changed, 153 insertions(+)


Hi maintainers,

I have made modification for this patch. Is the modified version good to be picked?


Patch hide | download patch | download mbox

diff --git a/doc/encoders.texi b/doc/encoders.texi index 29625ba..0b30776 100644
--- a/doc/encoders.texi
+++ b/doc/encoders.texi
@@ -1569,6 +1569,151 @@  Set maximum NAL size in bytes.
 Allow skipping frames to hit the target bitrate if set to 1.
 @end table
+@section libsvt_hevc
+Scalable Video Technology for HEVC encoder (SVT-HEVC encoder) wrapper.
+This encoder requires the presence of the headers and library during 
+configuration. You need to explicitly configure the build with 
+@code{--enable-libsvthevc}. The library is detected using 
+For more information about the library see 
+@subsection Options
+The following FFmpeg global options affect the configurations of the 
+libsvt_hevc encoder.
+@table @option
+@item b  (@emph{bitrate})
+Set the bitrate (as a number of bits per second). Default is 7M.
+@item g  / @option{gop_size}
+Set the GOP size. Default is -2 (unspecified).
+@item flags +cgop
+Enable closed GOP.
+@item qmin (@emph{min-q})
+Defaults 10
+@item qmax (@emph{max-q})
+Defaults 48
+Set minimum/maximum quantisation values.  Valid range is from 0 to 51 
+(Only used when bit rate control mode @option{rc} is set to 1(vbr) mode.
+Has to be qmax > = qmin).
+@item profile (@emph{profile})
+Set profile restrictions. Can assume one of the following possible values:
+Default is 2 (main10).
+@table @samp
+@item main
+main profile
+@item main10
+main10 profile
+@end table
+@item level
+@option{profile} sets the value of @emph{profile}.
+@option{level} sets the value of @emph{level}.
+The encoder also has its own specific options:
+@table @option
+@item vui
+Enables or disables the vui structure in the HEVC elementary bitstream. 
+0 = Off, 1 = On. Default is 0 (Off).
+@item aud (@emph{aud})
+Enable use of access unit delimiters when set to 1. Default is 0 (Off).
+@item hielevel
+Set hierarchical levels. Can assume one of the following possible values:
+Default is 3 (4level).
+@table @samp
+@item flat
+none hierarchy level
+@item 2level
+2-level hierarchy
+@item 3level
+3-level hierarchy
+@item 4level
+4-level hierarchy
+@end table
+@item la_depth
+Set look-ahead depth, depending on bit rate control mode @option{rc}, 
+when bit rate control mode is set to vbr it's best to set this 
+parameter to be equal to the intra period value (such is the default 
+set by the encoder), when cqp is chosen, then a look ahead is recommended. The range is from @var{0-256}.
+@item preset
+A preset defining the quality vs density tradeoff point that the 
+encoding is to be performed at.(e.g. 0 is the highest quality mode,
+12 is the highest density mode). The range is from @var{0-12}. Default is 9.
+@item tier
+Set @emph{general_tier_flag}.  This may affect the level chosen for the 
+stream if it is not explicitly specified. Can assume one of the following possible values:
+Default is 1 (main).
+@table @samp
+@item main
+main tier
+@item high
+high tier
+@end table
+@item rc
+Set bit rate control mode. Can assume one of the following possible values:
+Default is 0 (cqp).
+@table @samp
+@item cqp
+Constant QP (CQP) mode
+@item vbr
+Variable Bit Rate (VBR) mode
+@end table
+@item qp
+Initial quantization parameter for the intra pictures used when 
+@option{rc} is cqp mode. The range is from @var{0-51}. Default is 32.
+@item sc_detection
+Enables or disables the scene change detection algorithm. Default is 0 (disable).
+@item tune
+Set quality tuning mode. Can assume one of the following possible values:
+Default is 1 (oq).
+@table @samp
+@item sq
+Visually optimized mode
+@item oq
+PSNR / SSIM optimized mode
+@item vmaf
+VMAF optimized mode
+@end table
+@item bl_mode
+Enables or disables Random Access Prediction. Default is 0 (disable).
+@end table
+@item hdr
+High dynamic range input. Default is 0 (disable).
+@end table
 @section libtheora
 libtheora Theora encoder wrapper.
diff --git a/doc/general.texi b/doc/general.texi index fe94c40..f90e188 100644
--- a/doc/general.texi
+++ b/doc/general.texi
@@ -234,6 +234,14 @@  FFmpeg can use the OpenJPEG libraries for decoding/encoding J2K videos.  Go to  instructions.  To enable using OpenJPEG in FFmpeg, pass @code{--enable-libopenjpeg} to  @file{./configure}.
+@section Scalable Video Technology for HEVC
+FFmpeg can make use of the SVT-HEVC library for HEVC encoding.
+Go to @url{https://github.com/intel/SVT-HEVC.git} and follow the 
+instructions for installing the library. Pass 
+@code{--enable-libsvthevc} to configure to enable it.
 @section TwoLAME
 FFmpeg can make use of the TwoLAME library for MP2 encoding.