From patchwork Tue Mar 5 07:43:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jing SUN X-Patchwork-Id: 12197 Return-Path: X-Original-To: patchwork@ffaux-bg.ffmpeg.org Delivered-To: patchwork@ffaux-bg.ffmpeg.org Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by ffaux.localdomain (Postfix) with ESMTP id C52E5447AE8 for ; Tue, 5 Mar 2019 08:46:02 +0200 (EET) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id A9780689985; Tue, 5 Mar 2019 08:46:02 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 969C3689985 for ; Tue, 5 Mar 2019 08:45:55 +0200 (EET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 04 Mar 2019 22:45:53 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,443,1544515200"; d="scan'208";a="138122978" Received: from unknown (HELO localhost.localdomain.bj.intel.com) ([172.16.181.151]) by FMSMGA003.fm.intel.com with ESMTP; 04 Mar 2019 22:45:51 -0800 From: Jing SUN To: ffmpeg-devel@ffmpeg.org Date: Tue, 5 Mar 2019 15:43:43 +0800 Message-Id: <1551771823-17500-1-git-send-email-jing.a.sun@intel.com> X-Mailer: git-send-email 1.8.3.1 Subject: [FFmpeg-devel] [PATCH v6 2/2] doc: Add libsvt_hevc encoder docs X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Jing SUN , "Huang, Zhengxu" , hassene , Jun Zhao MIME-Version: 1.0 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Add docs for libsvt_hevc encoder in encoders.texi and general.texi Signed-off-by: Jun Zhao Signed-off-by: Huang, Zhengxu Signed-off-by: hassene Signed-off-by: Jing SUN --- doc/encoders.texi | 161 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ doc/general.texi | 8 +++ 2 files changed, 169 insertions(+) diff --git a/doc/encoders.texi b/doc/encoders.texi index 29625ba..64ddb2f 100644 --- a/doc/encoders.texi +++ b/doc/encoders.texi @@ -1569,6 +1569,167 @@ 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 +@command{pkg-config}. + +For more information about the library see +@url{https://github.com/intel/SVT-HEVC.git}. + +@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 refs (@emph{ref}) +Number of reference frames each P-frame can use. The range is from @var{0-16}. +Default is 0(disabled). + +@item g / @option{gop_size} +Set the GOP size. Default is 64. + +@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 0(cqp) 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_idc} and the @emph{constraint_set*_flag}s. +@option{level} sets the value of @emph{level_idc}. + +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 intra_ref_type +Set intra refesh type. Can assume one of the following possible values: + +Default is 2 (idr). + +@table @samp +@item cra +open group of pictures +@item idr +closed group of pictures +@end table + +@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..9863e14 100644 --- a/doc/general.texi +++ b/doc/general.texi @@ -126,6 +126,14 @@ The dispatcher is open source and can be downloaded from with the @code{--enable-libmfx} option and @code{pkg-config} needs to be able to locate the dispatcher's @code{.pc} files. +@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 Kvazaar FFmpeg can make use of the Kvazaar library for HEVC encoding.