@@ -370,9 +370,6 @@ int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt,

     for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;

         probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {

-        if (probe_size < offset) {

-            continue;

-        }

         score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;

         /* read probe data */

@@ -388,6 +385,8 @@ int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt,

             ret = 0;            /* error was end of file, nothing read */

         }

         buf_offset += ret;

+        if (buf_offset < offset)

+            continue;

         pd.buf_size = buf_offset - offset;

         pd.buf = &buf[offset];