Something

    // clear out any existing seektables
    m_playbackinfo->ClearPositionMap(MARK_KEYFRAME);
    m_playbackinfo->ClearPositionMap(MARK_GOP_START);
    m_playbackinfo->ClearPositionMap(MARK_GOP_BYFRAME);

    if (OpenFile() < 0)
        return(0);

    playing = true;

    if (!InitVideo())
    {
        VERBOSE(VB_IMPORTANT, "NVP: Unable to initialize video for RebuildSeekTable.");
        playing = false;
        return 0;
    }