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Nectar
Asked: 2018-04-11 09:59:21 +0800 CST

How can I show a timecode while playing audio in FFPlay?

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I'm wanting to play strictly audio files with FFplay. Already when opening files it displays a window with a rolling spectogram.

I'd like to have the same spectogram with an overlay of a timecode in hh:mm:ss.

There is nothing on the man page whatsoever of this.

How can I achieve this?

sound command-line xorg ffmpeg

1 Answers

  1. This can be done with the showspectrum and drawtext filters.

    enter image description here

    ffplay -f lavfi "amovie=input.mp3,asplit[a][out1];[a]showspectrum=mode=separate:color=intensity:slide=1,drawtext=text='%{pts\:hms}':box=1:boxborderw=5:x=(w-text_w)/2:y=h-(text_h*2):fontsize=16:font=Mono[out0]"
    • Seeking during playback will not be possible.
    • Use a mono font, otherwise the width of the numbers will vary causing movement. The use of the option font=Mono allows you to set the font family, but this requires your ffmpeg to be compiled with --enable-libfribidi. Otherwise, use the fontfile option and provide the full path to the font file.
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