void gf_filter_get_clock_hint(GF_Filter *filter, u64 *time_in_us, GF_Fraction64 *media_timestamp)
{
	//for now only one clock hint possible ...
	if (time_in_us) *time_in_us = filter->session->hint_clock_us;
	if (media_timestamp) *media_timestamp = filter->session->hint_timestamp;
}
void gf_filter_get_clock_hint(GF_Filter *filter, u64 *time_in_us, GF_Fraction64 *media_timestamp)
{
	 
	if (time_in_us) *time_in_us = filter->session->hint_clock_us;
	if (media_timestamp) *media_timestamp = filter->session->hint_timestamp;
}