%vls -vv -d udp:192.168.0.42 file:video1.xyz --ttl 12
where :
video1.xyz
is the file you want to stream
,
192.168.0.42 is either :
the IP address of the machine you want to unicast to ;
or the DNS name the machine you want to unicast to ;
or a multicast IP address .
12 is the value of the TTL (Time To Live) of your IP packets (which means that the stream will be able to cross 11 routers) .
When you want to stop VLS, use the key combination Ctrl+c.
If you want to stream the file continuously, add the --loop option .
VLS can stream MPEG files that meet two critera :
the file must be MPEG PS (Program Stream) or MPEG TS (Transport Stream), that contain video and audio multiplexed. VLS cannot stream MPEG ES (Elementary Stream), i.e. a file with only audio or video .
In order to know if an MPEG file is MPEG PS, MPEG TS or MPEG ES, read the file with VLC and look at the messages (select in the menu View / Messages, or use the command line vlc -vvv) .
If you see a line :
[00000107] main module debug: using demux module "ts_dvbpsi"
it means the file is MPEG TS .
If you see a line :
[00000109] main module debug: using demux module "ps"
it means the file is MPEG PS .
If you see a line :
[00000109] main module debug: using demux module "es"
it means the file is MPEG ES, VLS can't stream it. .
the sequence header of the video must repeat itself regularly, which is often the case with MPEG-2, but very rare with MPEG-1. There is no easy way to know if the sequence header is repeated regularly. Files with a .vob extension are normally MPEG-2 files and files with .mpg or .mpeg extension or usually MPEG-1 files .
You can download this streamable MPEG-2 PS file for your tests : presentation_short.vob .