On Thu, Aug 20, 2015 at 6:03 PM Ganesh Ajjanagadde <gajjanagadde at gmail.com> wrote: > - avio_printf(pb, "Running as pid %d.\n", stream->pid); > + avio_printf(pb, "Running as pid %ld.\n", (int64_t) > stream->pid); > You need `"%" PRIi64` as the format specifier. Timothy