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63 lines
1.6 KiB
63 lines
1.6 KiB
@chapter Decoders |
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@c man begin DECODERS |
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Decoders are configured elements in FFmpeg which allow the decoding of |
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multimedia streams. |
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When you configure your FFmpeg build, all the supported native decoders |
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are enabled by default. Decoders requiring an external library must be enabled |
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manually via the corresponding @code{--enable-lib} option. You can list all |
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available decoders using the configure option @code{--list-decoders}. |
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You can disable all the decoders with the configure option |
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@code{--disable-decoders} and selectively enable / disable single decoders |
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with the options @code{--enable-decoder=@var{DECODER}} / |
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@code{--disable-decoder=@var{DECODER}}. |
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The option @code{-codecs} of the ff* tools will display the list of |
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enabled decoders. |
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@c man end DECODERS |
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@chapter Video Decoders |
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@c man begin VIDEO DECODERS |
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A description of some of the currently available video decoders |
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follows. |
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@section rawvideo |
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Raw video decoder. |
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This decoder decodes rawvideo streams. |
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@subsection Options |
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@table @option |
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@item top @var{top_field_first} |
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Specify the assumed field type of the input video. |
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@table @option |
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@item -1 |
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the video is assumed to be progressive (default) |
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@item 0 |
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bottom-field-first is assumed |
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@item 1 |
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top-field-first is assumed |
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@end table |
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@end table |
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@c man end VIDEO DECODERS |
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@chapter Audio Decoders |
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@c man begin AUDIO DECODERS |
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@section ffwavesynth |
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Internal wave synthetizer. |
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This decoder generates wave patterns according to predefined sequences. Its |
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use is purely internal and the format of the data it accepts is not publicly |
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documented. |
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@c man end AUDIO DECODERS
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