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| -rw-r--r-- | doc/ffmpeg.texi | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi index 69ffa878fb..1bca962662 100644 --- a/doc/ffmpeg.texi +++ b/doc/ffmpeg.texi @@ -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 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 frame rate @var{fps}. |