1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/gxfenc.c b/libavformat/gxfenc.c
index 60f88fdabd..32714f63ae 100644
--- a/libavformat/gxfenc.c
+++ b/libavformat/gxfenc.c
@@ -633,7 +633,7 @@ static int gxf_write_header(AVFormatContext *s)
     uint8_t tracks[255] = {0};
     int i, media_info = 0;
 
-    if (!pb->seekable) {
+    if (!(pb->seekable & AVIO_SEEKABLE_NORMAL)) {
         av_log(s, AV_LOG_ERROR, "gxf muxer does not support streamed output, patch welcome");
         return -1;
     }