1 files changed, 18 insertions, 0 deletions
diff --git a/libavformat/mux.c b/libavformat/mux.c
index b51f906c4f..96193dd9a6 100644
--- a/libavformat/mux.c
+++ b/libavformat/mux.c
@@ -621,3 +621,21 @@ fail:
     av_freep(&s->priv_data);
     return ret;
 }
+
+int ff_write_chained(AVFormatContext *dst, int dst_stream, AVPacket *pkt,
+                     AVFormatContext *src)
+{
+    AVPacket local_pkt;
+
+    local_pkt = *pkt;
+    local_pkt.stream_index = dst_stream;
+    if (pkt->pts != AV_NOPTS_VALUE)
+        local_pkt.pts = av_rescale_q(pkt->pts,
+                                     src->streams[pkt->stream_index]->time_base,
+                                     dst->streams[dst_stream]->time_base);
+    if (pkt->dts != AV_NOPTS_VALUE)
+        local_pkt.dts = av_rescale_q(pkt->dts,
+                                     src->streams[pkt->stream_index]->time_base,
+                                     dst->streams[dst_stream]->time_base);
+    return av_write_frame(dst, &local_pkt);
+}