@@ -182,6 +182,8 @@

      1 -         /* Payload Flags */                      \

      2 * PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS)

+#define DATA_HEADER_SIZE 50

+

 typedef struct {

     uint32_t seqno;

     int is_streamed;

@@ -517,14 +519,14 @@ static int asf_write_header1(AVFormatContext *s, int64_t file_size,

     cur_pos     = avio_tell(pb);

     header_size = cur_pos - header_offset;

     if (asf->is_streamed) {

-        header_size += 8 + 30 + 50;

+        header_size += 8 + 30 + DATA_HEADER_SIZE;

         avio_seek(pb, header_offset - 10 - 30, SEEK_SET);

         avio_wl16(pb, header_size);

         avio_seek(pb, header_offset - 2 - 30, SEEK_SET);

         avio_wl16(pb, header_size);

-        header_size -= 8 + 30 + 50;

+        header_size -= 8 + 30 + DATA_HEADER_SIZE;

     }

     header_size += 24 + 6;

     avio_seek(pb, header_offset - 14, SEEK_SET);

@@ -555,10 +557,10 @@ static int asf_write_header(AVFormatContext *s)

     asf->nb_index_count        = 0;

     asf->maximum_packet        = 0;

-    /* the data-chunk-size has to be 50, which is data_size - asf->data_offset

-     *  at the moment this function is done. It is needed to use asf as

-     *  streamable format. */

-    if (asf_write_header1(s, 0, 50) < 0) {

+    /* the data-chunk-size has to be 50 (DATA_HEADER_SIZE), which is

+     * data_size - asf->data_offset at the moment this function is done.

+     * It is needed to use asf as a streamable format. */

+    if (asf_write_header1(s, 0, DATA_HEADER_SIZE) < 0) {

         //av_free(asf);

         return -1;

     }