Revision f4acb837 doc/muxers.texi

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doc/muxers.texi
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     -y out.ts
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@end example
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@section null
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Null muxer.
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This muxer does not generate any output file, it is mainly useful for
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testing or benchmarking purposes.
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For example to benchmark decoding with @file{ffmpeg} you can use the
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command:
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@example
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ffmpeg -benchmark -i INPUT -f null out.null
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@end example
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Note that the above command does not read or write the @file{out.null}
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file, but specifying the output file is required by the @file{ffmpeg}
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syntax.
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Alternatively you can write the command as:
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@example
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ffmpeg -benchmark -i INPUT -f null -
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@end example
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@c man end MUXERS

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