@@ -148,9 +148,12 @@ offset_t url_filesize(URLContext *h)

 {

     offset_t pos, size;

+    size= url_seek(h, 0, AVSEEK_SIZE);

+    if(size<0){

     pos = url_seek(h, 0, SEEK_CUR);

     size = url_seek(h, -1, SEEK_END)+1;

     url_seek(h, pos, SEEK_SET);

+    }

     return size;

 }

@@ -69,6 +69,8 @@ void url_set_interrupt_cb(URLInterruptCB *interrupt_cb);

 /* not implemented */

 int url_poll(URLPollEntry *poll_table, int n, int timeout);

+#define AVSEEK_SIZE 0x10000

+

 typedef struct URLProtocol {

     const char *name;

     int (*url_open)(URLContext *h, const char *filename, int flags);

@@ -170,8 +170,11 @@ offset_t url_fsize(ByteIOContext *s)

     if (!s->seek)

         return -EPIPE;

+    size = s->seek(s->opaque, 0, AVSEEK_SIZE);

+    if(size<0){

     size = s->seek(s->opaque, -1, SEEK_END) + 1;

     s->seek(s->opaque, s->pos, SEEK_SET);

+    }

     return size;

 }