some_help.cpp

static int our_get_buffer(struct AVCodecContext *c, AVFrame *pic)
{
    int ret = avcodec_default_get_buffer(c, pic);
    int64_t *pts = (int64_t*)av_malloc(sizeof(int64_t));
    *pts = global_video_pkt_pts;
    pic->opaque = pts;
    return ret;
}
static void our_release_buffer(struct AVCodecContext *c, AVFrame *pic)
{
    if(pic) av_freep(&pic->opaque);
    avcodec_default_release_buffer(c, pic);
}
static int our_get_buffer(struct AVCodecContext *c, AVFrame *pic)
{
    int ret = avcodec_default_get_buffer(c, pic);
    int64_t *pts = (int64_t*)av_malloc(sizeof(int64_t));
    *pts = global_video_pkt_pts;
    pic->opaque = pts;
    return ret;
}
static void our_release_buffer(struct AVCodecContext *c, AVFrame *pic)
{
    if(pic) av_freep(&pic->opaque);
    avcodec_default_release_buffer(c, pic);
}