The specification says the value is expressed in 10bit including,
the 4bytes crc.
---

Now with the correct value, hopefully.

 libavformat/mpegtsenc.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/libavformat/mpegtsenc.c b/libavformat/mpegtsenc.c
index 838702e..b297280 100644
--- a/libavformat/mpegtsenc.c
+++ b/libavformat/mpegtsenc.c
@@ -89,6 +89,10 @@ typedef struct MpegTSWrite {
 #define DEFAULT_PES_HEADER_FREQ 16
 #define DEFAULT_PES_PAYLOAD_SIZE ((DEFAULT_PES_HEADER_FREQ - 1) * 184 + 170)

+/* the section_lenght is 12bit, first 2 set to 0, the remaining 10bit
+ * should not exceed 1021. */
+#define SECTION_LENGTH 1020
+
 /* NOTE: 4 bytes must be left at the end for the crc32 */
 static void mpegts_write_section(MpegTSSection *s, uint8_t *buf, int len)
 {
@@ -201,7 +205,7 @@ static void mpegts_write_pat(AVFormatContext *s)
 {
     MpegTSWrite *ts = s->priv_data;
     MpegTSService *service;
-    uint8_t data[1012], *q;
+    uint8_t data[SECTION_LENGTH], *q;
     int i;

     q = data;
@@ -217,7 +221,7 @@ static void mpegts_write_pat(AVFormatContext *s)
 static void mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
 {
     MpegTSWrite *ts = s->priv_data;
-    uint8_t data[1012], *q, *desc_length_ptr, *program_info_length_ptr;
+    uint8_t data[SECTION_LENGTH], *q, *desc_length_ptr, 
*program_info_length_ptr;
     int val, stream_type, i;

     q = data;
@@ -372,7 +376,7 @@ static void mpegts_write_sdt(AVFormatContext *s)
 {
     MpegTSWrite *ts = s->priv_data;
     MpegTSService *service;
-    uint8_t data[1012], *q, *desc_list_len_ptr, *desc_len_ptr;
+    uint8_t data[SECTION_LENGTH], *q, *desc_list_len_ptr, *desc_len_ptr;
     int i, running_status, free_ca_mode, val;

     q = data;
--
1.9.0

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