Sending audio/video on the same channel leads to non-montonic
timestamps when switching streams, so the RTMP timestamp delta
is incorrectly written as a large unsigned number.
---
 libavformat/rtmpproto.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libavformat/rtmpproto.c b/libavformat/rtmpproto.c
index 48eed56..74ca3d8 100644
--- a/libavformat/rtmpproto.c
+++ b/libavformat/rtmpproto.c
@@ -2599,6 +2599,7 @@ static int rtmp_write(URLContext *s, const uint8_t *buf, 
int size)
         if (rt->flv_header_bytes < 11) {
             const uint8_t *header = rt->flv_header;
             int copy = FFMIN(11 - rt->flv_header_bytes, size_temp);
+            int channel = RTMP_SOURCE_CHANNEL;
             bytestream_get_buffer(&buf_temp, rt->flv_header + 
rt->flv_header_bytes, copy);
             rt->flv_header_bytes += copy;
             size_temp            -= copy;
@@ -2620,8 +2621,10 @@ static int rtmp_write(URLContext *s, const uint8_t *buf, 
int size)
                 rt->prev_pkt[1][RTMP_SOURCE_CHANNEL].channel_id = 0;
             }
 
+            if (pkttype == RTMP_PT_VIDEO)
+                channel = RTMP_VIDEO_CHANNEL;
             //this can be a big packet, it's better to send it right here
-            if ((ret = ff_rtmp_packet_create(&rt->out_pkt, RTMP_SOURCE_CHANNEL,
+            if ((ret = ff_rtmp_packet_create(&rt->out_pkt, channel,
                                              pkttype, ts, pktsize)) < 0)
                 return ret;
 
-- 
1.7.9.5

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