@@ -259,7 +259,7 @@ static int aiff_read_header(AVFormatContext *s)

             offset = avio_rb32(pb);      /* Offset of sound data */

             avio_rb32(pb);               /* BlockSize... don't care */

             offset += avio_tell(pb);    /* Compute absolute data offset */

-            if (st->codec->block_align)    /* Assume COMM already parsed */

+            if (st->codec->block_align && !pb->seekable)    /* Assume COMM already parsed */

                 goto got_sound;

             if (!pb->seekable) {

                 av_log(s, AV_LOG_ERROR, "file is not seekable\n");