> Assume I have an existing well-encoded MP4 video WITHOUT subtitles.
> Now I want to add the text "foobar testtext" with fontsize=18 and
> fontfamily Verdana into video beginning at 1min23sec and ending at
> 3min44sec centralized 30 pixels above lower border.
> How can I most easily achieve this with ffmpeg?
> I possible/necessary the text could be put fix encoded into video and not
> only as traditional subtitle.
'enable' is a timeline editor, activating the filter only when the time is
between 83 seconds (1min23s) and 224 seconds (3min44s). X coordinate is
calculated with the middle of the text and the middle of the input video
and Y coordinate with the heigth total of the text and the height of input
video minus 30 pixels
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