[mythtv] Re: [XFree86] Relationship of XVideo to V4L

Joseph A. Caputo jcaputo1 at comcast.net
Tue Jul 8 17:13:55 EDT 2003

> -----Original Message-----
> From: mythtv-dev-bounces at snowman.net
> [mailto:mythtv-dev-bounces at snowman.net]On Behalf Of Billy Biggs
> Sent: Tuesday, July 08, 2003 3:12 PM
> To: xfree86 at XFree86.Org
> Cc: MythTV Development
> Subject: [mythtv] Re: [XFree86] Relationship of XVideo to V4L
> Michael J. Hammel (mythtv at graphics-muse.com):
>   XVIDEO does two things.  It provides an API allowing applications to
> draw their own video to the screen, and it also provides an API to have
> X talk directly to the capture card simply for displaying on the screen
> (no capture).

Actually, I believe it provides an API for an *application* that talks to
the capture card (via V4L) to pass the video directly to the video card for
output.  X itself (the X server, that is) doesn't talk to the card, it
merely listens to an application that's talking to the card (i.e., Xawtv).
Bottom line: V4L == capture, Xv == output.


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