How to add own, subtitles (resp. pure text) into existing MP4 video?

[pstein]

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 Avidemux?

I possible/necessary the text could be put fix encoded into video and not only as traditional subtitle.

Peter

[eumagga0x2a]

You need software like Aegisub to generate a traditional subtitle file (.ass, .ssa, .srt) for this purpose. Avidemux can only be used to hardcode these subtitles into video.

[Clemens.Ratte-Polle]

Yes, there should be an Avidemux filter to add text to Videos.
Doing it over external progs is not satisfying.