44a2c33939 tried to do this in a cute way by unsetting the hwdev to
be used for hwdec, but this doesn't prevent -copy variants from being
probed. Instead explicitly disallow it for grouped streams
44a2c33939 tried to do this in a cute way by unsetting the hwdev to
be used for hwdec, but this doesn't prevent -copy variants from being
probed. Instead explicitly disallow it for grouped streams