Method FindClosestVideoKeyFrame

src/core/track.cpp:196–203

}

int FFMS_Track::FindClosestVideoKeyFrame(int Frame) const {
    frame_vec &Frames = Data->Frames;
    Frame = std::min(std::max(Frame, 0), static_cast<int>(size()) - 1);
    size_t PosInDecodingOrder = Frames[Frame].PosInDecodingOrder;
    for (; PosInDecodingOrder > 0 && !(Frames[Frames[PosInDecodingOrder].OriginalPos].KeyFrame && Frames[Frames[PosInDecodingOrder].OriginalPos].PTS <= Frames[Frame].PTS); PosInDecodingOrder--);

    return Frames[PosInDecodingOrder].OriginalPos;
}

int FFMS_Track::RealFrameNumber(int Frame) const {
    return Data->RealFrameNumbers[Frame];