mpv_a53_cc.diff

diff --git a/video/decode/vd_lavc.c b/video/decode/vd_lavc.c
index 92ea8bd..490c718 100644
--- a/video/decode/vd_lavc.c
+++ b/video/decode/vd_lavc.c
@@ -660,40 +660,61 @@ static void decode(struct dec_video *vd, struct demux_packet *packet,
         }
         return;
     }
 
     if (ctx->hwdec && ctx->hwdec_failed) {
         av_frame_unref(ctx->pic);
         return;
     }
 
     // Skipped frame, or delayed output due to multithreaded decoding.
     if (!got_picture)
         return;
 
     ctx->hwdec_fail_count = 0;
 
     struct mp_image_params params;
     update_image_params(vd, ctx->pic, &params);
     vd->codec_pts = mp_pts_from_av(ctx->pic->pkt_pts, NULL);
     vd->codec_dts = mp_pts_from_av(ctx->pic->pkt_dts, NULL);
 
+    AVFrameSideData *sd = NULL;
+    sd = av_frame_get_side_data(ctx->pic, AV_FRAME_DATA_A53_CC);
+    if (sd) {
+        AVPacket cc_pkt;
+        int ret;
+        if ((ret = av_new_packet(&cc_pkt, sd->size)) < 0)
+            return ret;
+        memcpy(cc_pkt.data, sd->data, sd->size);
+        cc_pkt.stream_index = stream_idx;
+        cc_pkt.pts = frame->pts;
+        cc_pkt.pos = av_frame_get_pkt_pos(ctx->pic);
+
+        /*
+        AVStream *st;
+        if (!(st = avformat_new_stream(avctx, NULL)))
+            return AVERROR(ENOMEM);
+        st->codec->codec_id = AV_CODEC_ID_EIA_608;
+        st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
+        */
+    }
+
     struct mp_image *mpi = mp_image_from_av_frame(ctx->pic);
     av_frame_unref(ctx->pic);
     if (!mpi)
         return;
     assert(mpi->planes[0] || mpi->planes[3]);
     mp_image_set_params(mpi, &params);
 
     if (ctx->hwdec && ctx->hwdec->process_image)
         mpi = ctx->hwdec->process_image(ctx, mpi);
 
     *out_image = mp_img_swap_to_native(mpi);
 }
 
 static struct mp_image *decode_with_fallback(struct dec_video *vd,
                                 struct demux_packet *packet, int flags)
 {
     vd_ffmpeg_ctx *ctx = vd->priv;
     if (!ctx->avctx)
         return NULL;