[FFmpeg-user] ffprobe frame rate / time base

Erik Dobberkau erik.dobberkau at gmail.com
Thu Aug 18 12:06:13 EEST 2016

Sorry for bringing this up again, but the information on the Web is way to

It seems for H.264 encoded *interlaced* video the frame rate displayed by
ffprobe -show_streams -i [inputfile]
is still twice the actual frame rate, is this correct (i.e. 1080i25 video
is displayed as having 50fps)?

So in order to determine the actual video frame rate one must use
ffprobe -select_streams 0 -show_entries "frame=interlaced_frame" -i
to make sure the frame rate is displayed correctly (if interlaced_frame=0)
or is indeed 1/2 of the displayed frame rate (if interlaced_frame=1).


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