From: Michael Niedermayer <[email protected]>

Signed-off-by: Michael Niedermayer <[email protected]>
---
 libavformat/mpegtsenc.c |   18 ++++++++++--------
 1 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/libavformat/mpegtsenc.c b/libavformat/mpegtsenc.c
index 32a759c..b3b2cbc 100644
--- a/libavformat/mpegtsenc.c
+++ b/libavformat/mpegtsenc.c
@@ -24,6 +24,7 @@
 #include "libavutil/dict.h"
 #include "libavutil/mathematics.h"
 #include "libavutil/opt.h"
+#include "libavutil/avassert.h"
 #include "libavcodec/mpegvideo.h"
 #include "avformat.h"
 #include "internal.h"
@@ -999,20 +1000,21 @@ static int mpegts_write_packet(AVFormatContext *s, 
AVPacket *pkt)
         }
     }
 
-    if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO) {
-        // for video and subtitle, write a single pes packet
-        mpegts_write_pes(s, st, buf, size, pts, dts, pkt->flags & 
AV_PKT_FLAG_KEY);
-        av_free(data);
-        return 0;
-    }
-
-    if (ts_st->payload_index + size > DEFAULT_PES_PAYLOAD_SIZE) {
+    if (ts_st->payload_index && ts_st->payload_index + size > 
DEFAULT_PES_PAYLOAD_SIZE) {
         mpegts_write_pes(s, st, ts_st->payload, ts_st->payload_index,
                          ts_st->payload_pts, ts_st->payload_dts,
                          ts_st->payload_flags & AV_PKT_FLAG_KEY);
         ts_st->payload_index = 0;
     }
 
+    if (st->codec->codec_type != AVMEDIA_TYPE_AUDIO || size > 
DEFAULT_PES_PAYLOAD_SIZE) {
+        av_assert0(!ts_st->payload_index);
+        // for video and subtitle, write a single pes packet
+        mpegts_write_pes(s, st, buf, size, pts, dts, pkt->flags & 
AV_PKT_FLAG_KEY);
+        av_free(data);
+        return 0;
+    }
+
     if (!ts_st->payload_index) {
         ts_st->payload_pts = pts;
         ts_st->payload_dts = dts;
-- 
1.7.7.3

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