diff --git a/cmdutils.c b/cmdutils.c
index 4e0a406fde17fe43efafd6c87d76f282d6352825..8b6edfc9c54d04d815c027061ecf5f1cb2fd6c55 100644
--- a/cmdutils.c
+++ b/cmdutils.c
@@ -1864,20 +1864,31 @@ int cmdutils_read_file(const char *filename, char **bufptr, size_t *size)
                strerror(errno));
         return ret;
     }
-    fseek(f, 0, SEEK_END);
-    *size = ftell(f);
-    fseek(f, 0, SEEK_SET);
-    if (*size == (size_t)-1) {
+
+    ret = fseek(f, 0, SEEK_END);
+    if (ret == -1) {
         ret = AVERROR(errno);
-        av_log(NULL, AV_LOG_ERROR, "IO error: %s\n", strerror(errno));
-        fclose(f);
-        return ret;
+        goto out;
+    }
+
+    ret = ftell(f);
+    if (ret < 0) {
+        ret = AVERROR(errno);
+        goto out;
     }
+    *size = ret;
+
+    ret = fseek(f, 0, SEEK_SET);
+    if (ret == -1) {
+        ret = AVERROR(errno);
+        goto out;
+    }
+
     *bufptr = av_malloc(*size + 1);
     if (!*bufptr) {
         av_log(NULL, AV_LOG_ERROR, "Could not allocate file buffer\n");
-        fclose(f);
-        return AVERROR(ENOMEM);
+        ret = AVERROR(ENOMEM);
+        goto out;
     }
     ret = fread(*bufptr, 1, *size, f);
     if (ret < *size) {
@@ -1893,6 +1904,8 @@ int cmdutils_read_file(const char *filename, char **bufptr, size_t *size)
         (*bufptr)[(*size)++] = '\0';
     }
 
+out:
+    av_log(NULL, AV_LOG_ERROR, "IO error: %s\n", av_err2str(ret));
     fclose(f);
     return ret;
 }