![]() There are several versions of it, called MPEG-1, MPEG-2, MPEG-4. Then, each of these is passed to a decoder that does the mathematical processing to decompress the stream. Demuxing files doesn't weaken the video or audio quality, neither does it do anything for them it simply saves them into separate files, each containing one element of the original file. This means that it reads the container format and separates audio, video, and subtitles, if any. To decode a stream, VLC first demuxes it. Now that you have your shipping box, you need to open it before you can see the content. This means joining separate parts of the video (or streams) into one file. most common audio encoding method is MP3 or ogg-vorbis. Common video encoding methods are DivX, MPEG-1, MPEG-2, MPEG-4. This means compressing a file, whether it is audio or video, to another format that normally takes up less physical drive space than the previous format. This is the step where you are going to create the shipping box. You can find a matrix of possible codecs and container formats on the features page. Unfortunately, there are some incompatibilities. ![]() ![]() In a perfect world, you could put any codec in any container format. The streams contained can be encoded using different codecs. Very often, there is an audio stream and a video one. It contains one or several streams already encoded by codecs. So what do you do? You get a knife and cut it open.Ī container format follows this same basic idea. You get a box in the mail and you think, "Cool! What's inside?" You don't really care about the box itself, you care about what's in that box. To start off, think of a container format as a standard shipping box. To fully understand the VideoLAN solution, you must understand the difference between a codec and a container format.Ī codec is a compression algorithm, used to reduce the size of a stream. The mini-SAP-server works under Linux and Mac OS X. The mini-SAP-server sends announces about the multicast programs on the network in IPv4 or IPv6, and VLCs receive these annouces and automatically add the programs announced to their playlist. You can add a channel information service based on the SAP/SDP standard to the VideoLAN solution. Note: VLC doesn't work on Mac OS 9, and probably never will. To get the complete list of VLC's possibilities on each platform supported, see the VLC features page. to a multicast IP address): this is called multicast, a dynamic group of machines that the clients can join or leave (i.e.to one IP address): this is called unicast, MPEG-1, MPEG-2 and MPEG-4 / DivX files,.VLC can also be used as a server to stream: MPEG-1, MPEG-2 and MPEG-4 streams from the network sent by VLS or VLC's stream output.MPEG-1, MPEG-2 and MPEG-4 / DivX files from a hard disk, a CD-ROM drive.VLC works on many platforms: Linux, Windows, Mac OS X, BeOS, *BSD, Solaris, Familiar Linux, Yopy/Linupy and QNX. More details about the project can be found on the VideoLAN Web site. Here is an illustration of the complete VideoLAN solution: VLC (initially VideoLAN Client), which can be used as a server to stream MPEG-1, MPEG-2 and MPEG-4 files, DVDs and live videos on the network in unicast or multicast or used as a client to receive, decode and display MPEG streams under multiple operating systems.VLS (VideoLAN Server), which can stream MPEG-1, MPEG-2 and MPEG-4 files, DVDs, digital satellite channels, digital terrestrial television channels and live videos on the network in unicast or multicast.VideoLAN is designed to stream MPEG videos on high-bandwidth networks. VideoLAN is a complete software solution for video streaming, developed by students of the Ecole Centrale Paris and developers from all over the world, under the GNU General Public License (GPL).
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