On send error ENOTCONN try to reconnect the stream output instance with the network. This worksaround accidental unplugging of a cable while streaming. However it only works with multicast upto the timeout period of the multicast stream. If that expires the switch or os kicks in and all multicast joins expire. Resulting in no stream what so ever. The client then needs to reconnect. O, yes also only works with fixed ipaddresses.

Add initialisation of p_dec->fmt_out so it can be used inside transcode to determine the decoders output format.

Revert change of: VLC_FOURCC('Y','U','V','P') into p_region->fmt.i_chrom on line 449 and fixed some identation for readibility.