-
- if (!st->r_frame_rate.num){
- if( st->codec->time_base.den * (int64_t)st->time_base.num
- <= st->codec->time_base.num * st->codec->ticks_per_frame * (int64_t)st->time_base.den){
- st->r_frame_rate.num = st->codec->time_base.den;
- st->r_frame_rate.den = st->codec->time_base.num * st->codec->ticks_per_frame;
- }else{
- st->r_frame_rate.num = st->time_base.den;
- st->r_frame_rate.den = st->time_base.num;
- }
- }