A quarter turn, in degrees clockwise, that stored pixels still need before
they face the way the container says they should. Every phone recording held
in portrait carries one: the sensor stores landscape and the track's display
matrix names the turn.
The sign is mediabunny's, read straight off the track. ffprobe prints the
opposite sign for the same file, so a clip ffprobe calls +90 is 270 here.
A quarter turn, in degrees clockwise, that stored pixels still need before they face the way the container says they should. Every phone recording held in portrait carries one: the sensor stores landscape and the track's display matrix names the turn.
The sign is mediabunny's, read straight off the track. ffprobe prints the opposite sign for the same file, so a clip ffprobe calls +90 is 270 here.