avformat/movenc: fix remuxing eia-608 into mov from other containers

1 files changed, 16 insertions, 0 deletions

diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 5d8dc4fd5d..520aaafb74 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -5582,6 +5582,22 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
             goto end;
         avio_write(pb, pkt->data, size);
 #endif
+    } else if (par->codec_id == AV_CODEC_ID_EIA_608) {
+        size = 8;
+
+        for (int i = 0; i < pkt->size; i += 3) {
+            if (pkt->data[i] == 0xFC) {
+                size += 2;
+            }
+        }
+        avio_wb32(pb, size);
+        ffio_wfourcc(pb, "cdat");
+        for (int i = 0; i < pkt->size; i += 3) {
+            if (pkt->data[i] == 0xFC) {
+                avio_w8(pb, pkt->data[i + 1]);
+                avio_w8(pb, pkt->data[i + 2]);
+            }
+        }
     } else {
         if (trk->cenc.aes_ctr) {
             if (par->codec_id == AV_CODEC_ID_H264 && par->extradata_size > 4) {