On Thu, May 07, 2015 at 16:54:26 -0400, Dave P wrote: > Does '-map 0:a' help? Have you tried '-sn' and/or '-dn' in addition to > '-vn' ? That could indeed have been an interesting cause, but since Markus's original mail showed us the full output, we saw that the input only contains audio streams. *shrug* Moritz