@@ -175,9 +175,7 @@ static int request_frame(AVFilterLink *link)

     if (!av_fifo_size(c->fifo)) {

         if (c->eof)

             return AVERROR_EOF;

-        av_log(link->src, AV_LOG_ERROR,

-               "request_frame() called with no available frame!\n");

-        return AVERROR(EINVAL);

+        return AVERROR(EAGAIN);

     }

     av_fifo_generic_read(c->fifo, &buf, sizeof(buf), NULL);