static int gotkeyframe;
static int get_video_frame(VideoState *is, AVFrame *frame)
{
    int got_picture;

    if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
        return -1;
#if 0
        if (frame->key_frame)
                gotkeyframe=1;
        if (gotkeyframe==0) {
                is->frame_drops_early++;
                av_frame_unref(frame);
                got_picture = 0;
        }
    if (got_picture && gotkeyframe) {
#else

        if (got_picture) {
#endif