4 Decoders are configured elements in FFmpeg which allow the decoding of
7 When you configure your FFmpeg build, all the supported native decoders
8 are enabled by default. Decoders requiring an external library must be enabled
9 manually via the corresponding @code{--enable-lib} option. You can list all
10 available decoders using the configure option @code{--list-decoders}.
12 You can disable all the decoders with the configure option
13 @code{--disable-decoders} and selectively enable / disable single decoders
14 with the options @code{--enable-decoder=@var{DECODER}} /
15 @code{--disable-decoder=@var{DECODER}}.
17 The option @code{-codecs} of the ff* tools will display the list of
22 @chapter Video Decoders
23 @c man begin VIDEO DECODERS
25 A description of some of the currently available video decoders
32 This decoder decodes rawvideo streams.
37 @item top @var{top_field_first}
38 Specify the assumed field type of the input video.
41 the video is assumed to be progressive (default)
43 bottom-field-first is assumed
45 top-field-first is assumed
50 @c man end VIDEO DECODERS
52 @chapter Audio Decoders
53 @c man begin AUDIO DECODERS
57 Internal wave synthetizer.
59 This decoder generates wave patterns according to predefined sequences. Its
60 use is purely internal and the format of the data it accepts is not publicly
63 @c man end AUDIO DECODERS
65 @chapter Subtitles Decoders
66 @c man begin SUBTILES DECODERS
70 This codec decodes the bitmap subtitles used in DVDs; the same subtitles can
71 also be found in VobSub file pairs and in some Matroska files.
77 Specify the global palette used by the bitmaps. When stored in VobSub, the
78 palette is normally specified in the index file; in Matroska, the palette is
79 stored in the codec extra-data in the same format as in VobSub. In DVDs, the
80 palette is stored in the IFO file, and therefore not available when reading
81 from dumped VOB files.
83 The format for this option is a string containing 16 24-bits hexadecimal
84 numbers (without 0x prefix) separated by comas, for example @code{0d00ee,
85 ee450d, 101010, eaeaea, 0ce60b, ec14ed, ebff0b, 0d617a, 7b7b7b, d1d1d1,
86 7b2a0e, 0d950c, 0f007b, cf0dec, cfa80c, 7c127b}.
89 @c man end SUBTILES DECODERS