Now that the option was moved in the per-stream context,
the parsing is done before the time_base for the stream is decided.
This patch does the parsing in AV_TIME_BASE units and rescales the
timestamps later when the correct time base is known.
Signed-off-by: Nicolas George <nicolas.george@normalesup.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>