From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx3.redhat.com (mx3.redhat.com [172.16.48.32]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id m1QD2uSo027125 for ; Tue, 26 Feb 2008 08:02:56 -0500 Received: from mail.gmx.net (mail.gmx.net [213.165.64.20]) by mx3.redhat.com (8.13.8/8.13.8) with SMTP id m1QD2Oer012646 for ; Tue, 26 Feb 2008 08:02:25 -0500 Date: Tue, 26 Feb 2008 14:02:00 +0100 From: Daniel =?iso-8859-1?Q?Gl=F6ckner?= To: Michel Bardiaux Message-ID: <20080226130200.GA215@daniel.bse> References: <47C3F5CB.1010707@mediaxim.be> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <47C3F5CB.1010707@mediaxim.be> Cc: video4linux-list@redhat.com Subject: Re: Grabbing 4:3 and 16:9 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: video4linux-list-bounces@redhat.com Errors-To: video4linux-list-bounces@redhat.com List-ID: On Tue, Feb 26, 2008 at 12:19:39PM +0100, Michel Bardiaux wrote: > Here in Belgium the broadcasts is sometimes 4:3, sometimes 16:9. > Currently, the card goes automatically in letterbox mode when it > receives 16:9, and our software captures the 4:3 frames at size 704x576. The card does not go into letterbox mode. It's the broadcaster who squeezes the 16:9 picture into 432 lines surrounded by 144 black lines. Some fill the chroma part of the black lines with a PALPlus helper signal. Although the algorithms to decode PALPlus are well documented in ETS 300 731, I have never seen a software implementation. > 1. How do I sense from the software that the mode is currently 16:9 or 4:3? Some broadcasters use WSS to signal 16:9. In Germany some signal 4:3 even on 16:9 shows. Read ETSI EN 300 294. > 2. How do I setup the bttv so that it does variable anamorphosis instead > of letterboxing? If that is at all possible of course... You can't. Bttv can't stretch vertically. Daniel -- video4linux-list mailing list Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list