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doc/ffmpeg: Try to clarify that the input option -r is not the same as -framerate.

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pull/85/head
Carl Eugen Hoyos 11 years ago
parent 0744daa887
commit 6f78c70324
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      doc/ffmpeg.texi

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doc/ffmpeg.texi
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@ -473,6 +473,9 @@ Set frame rate (Hz value, fraction or abbreviation).
As an input option, ignore any timestamps stored in the file and instead As an input option, ignore any timestamps stored in the file and instead
generate timestamps assuming constant frame rate @var{fps}. generate timestamps assuming constant frame rate @var{fps}.
This is not the same as the @option{-framerate} option used for some input formats
like image2 or v4l2 (it used to be the same in older versions of FFmpeg).
If in doubt use @option{-framerate} instead of the input option @option{-r}.
As an output option, duplicate or drop input frames to achieve constant output As an output option, duplicate or drop input frames to achieve constant output
frame rate @var{fps}. frame rate @var{fps}.

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