8bc6568595
That's required because -1 is evaluated as NAN, which converted back to int looks like a random number, this is especially annoying when debugging sources with undefined pos (as the video4linux2 device). Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net> (cherry picked from commit 3e5bc7ff6a23014daf2eb0b9a22986753ae2ec4f)