X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=doc%2Fdecoders.texi;h=1a2087d397c4a64ef813b6a5cb1f2acdeb6ec931;hb=2086d635c36c2865d1a0145c56e448b30af59ba0;hp=704bd60b9f1a326e30483b29c38dd61c7de49857;hpb=29929fc8e2449d2db8bd144b2badc8d1e6347412;p=ffmpeg diff --git a/doc/decoders.texi b/doc/decoders.texi index 704bd60b9f1..1a2087d397c 100644 --- a/doc/decoders.texi +++ b/doc/decoders.texi @@ -25,6 +25,19 @@ enabled decoders. A description of some of the currently available video decoders follows. +@section av1 + +AOMedia Video 1 (AV1) decoder. + +@subsection Options + +@table @option + +@item operating_point +Select an operating point of a scalable AV1 bitstream (0 - 31). Default is 0. + +@end table + @section rawvideo Raw video decoder. @@ -47,6 +60,39 @@ top-field-first is assumed @end table +@section libdav1d + +dav1d AV1 decoder. + +libdav1d allows libavcodec to decode the AOMedia Video 1 (AV1) codec. +Requires the presence of the libdav1d headers and library during configuration. +You need to explicitly configure the build with @code{--enable-libdav1d}. + +@subsection Options + +The following options are supported by the libdav1d wrapper. + +@table @option + +@item framethreads +Set amount of frame threads to use during decoding. The default value is 0 (autodetect). + +@item tilethreads +Set amount of tile threads to use during decoding. The default value is 0 (autodetect). + +@item filmgrain +Apply film grain to the decoded video if present in the bitstream. Defaults to the +internal default of the library. + +@item oppoint +Select an operating point of a scalable AV1 bitstream (0 - 31). Defaults to the +internal default of the library. + +@item alllayers +Output all spatial layers of a scalable AV1 bitstream. The default value is false. + +@end table + @section libdavs2 AVS2-P2/IEEE1857.4 video decoder wrapper. @@ -55,6 +101,27 @@ This decoder allows libavcodec to decode AVS2 streams with davs2 library. @c man end VIDEO DECODERS +@section libuavs3d + +AVS3-P2/IEEE1857.10 video decoder. + +libuavs3d allows libavcodec to decode AVS3 streams. +Requires the presence of the libuavs3d headers and library during configuration. +You need to explicitly configure the build with @code{--enable-libuavs3d}. + +@subsection Options + +The following option is supported by the libuavs3d wrapper. + +@table @option + +@item frame_threads +Set amount of frame threads to use during decoding. The default value is 0 (autodetect). + +@end table + +@c man end VIDEO DECODERS + @chapter Audio Decoders @c man begin AUDIO DECODERS @@ -74,7 +141,7 @@ the undocumented RealAudio 3 (a.k.a. dnet). @item -drc_scale @var{value} Dynamic Range Scale Factor. The factor to apply to dynamic range values -from the AC-3 stream. This factor is applied exponentially. +from the AC-3 stream. This factor is applied exponentially. The default value is 1. There are 3 notable scale factor ranges: @table @option @item drc_scale == 0 @@ -226,6 +293,8 @@ Enabled by default. @table @option @item compute_clut @table @option +@item -2 +Compute clut once if no matching CLUT is in the stream. @item -1 Compute clut if no matching CLUT is in the stream. @item 0 @@ -254,7 +323,7 @@ palette is stored in the IFO file, and therefore not available when reading from dumped VOB files. The format for this option is a string containing 16 24-bits hexadecimal -numbers (without 0x prefix) separated by comas, for example @code{0d00ee, +numbers (without 0x prefix) separated by commas, for example @code{0d00ee, ee450d, 101010, eaeaea, 0ce60b, ec14ed, ebff0b, 0d617a, 7b7b7b, d1d1d1, 7b2a0e, 0d950c, 0f007b, cf0dec, cfa80c, 7c127b}. @@ -283,6 +352,11 @@ List of teletext page numbers to decode. Pages that do not match the specified list are dropped. You may use the special @code{*} string to match all pages, or @code{subtitle} to match all subtitle pages. Default value is *. +@item txt_default_region +Set default character set used for decoding, a value between 0 and 87 (see +ETS 300 706, Section 15, Table 32). Default value is -1, which does not +override the libzvbi default. This option is needed for some legacy level 1.0 +transmissions which cannot signal the proper charset. @item txt_chop_top Discards the top teletext line. Default value is 1. @item txt_format