Re: Questions on video related multimedia standards
On Tue, Mar 07, 2006 at 12:15:37AM +0900, Junichi Uekawa wrote:
> Hi,
>
> I have a few questions on video standards.
>
> 1. We do have some kind of standard for video, called video4linux2, is
> that correct ? I gathered that it has some interface for
> configuring TV input and tuner I/O, and some standard on /dev/video
> devices.
yes, v4l2 is the kernel interface for video capture and overlay, mostly
for TV-style input.
> 2. Do we have any video codec standards ? Where they are put, what
> kind of interfaces they provide. Or are they independent of the
> encoder/decoder? (ffmpeg?)
Each framework (mplayer, xine, vlc, gstreamer) has its own codec system.
A codec such as theora is implemented as its own library (libtheora),
which is then wrapped up by each of the multimedia frameworks.
MPlayer (from upstream) usually expects to find win32 codec DLLs in
/usr/local/lib/codecs.
> I've kind of dumped those questions on the wiki[1]. Answers/helps would be appreciated.
>
> [1] http://wiki.debian.org/DebianMultimedia
I added a couple of links (to v4l2, and theora).
Conrad.
Reply to: