From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Message-ID: <47C4488A.8080107@mediaxim.be> Date: Tue, 26 Feb 2008 18:12:42 +0100 From: Michel Bardiaux MIME-Version: 1.0 To: Alan Cox References: <47C3F5CB.1010707@mediaxim.be> <20080226130200.GA215@daniel.bse> <20080226133839.GE26389@devserv.devel.redhat.com> <47C440FB.8080705@mediaxim.be> <20080226170215.GB4682@devserv.devel.redhat.com> In-Reply-To: <20080226170215.GB4682@devserv.devel.redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit 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: Alan Cox wrote: > On Tue, Feb 26, 2008 at 05:40:27PM +0100, Michel Bardiaux wrote: >> credits on the captured MPEGs). But Daniel wrote that the 16:9 analog >> broadcasts have only 432 lines, so the info is not there in the first >> place. So that effect isnt an option for me. But thanks anyway. > > Per frame.... if you sample as it scrolls and line up the title tops I suspect > most of the time you can get more samples as the title moves. > Not crazy, I am *also* considering various image enhancement techniques, I just want to start from the best possible capture in the first place. That means capturing at 768(or more?) wide instead of 704; in YUV422P instead of YUV420P; avoiding reizing, and use better resizing algorithms. And capturing at 576 instead of 432 vertically would help too. As I find more relevant pages, my question has now become: given a 768x576 capture (by a BT878) can I check whether the PALPLUS is there? No use trying to implement the decoder in software if the signal simply isnt there! -- Michel Bardiaux R&D Director T +32 [0] 2 790 29 41 F +32 [0] 2 790 29 02 E mailto:mbardiaux@mediaxim.be Mediaxim NV/SA Vorstlaan 191 Boulevard du Souverain Brussel 1160 Bruxelles http://www.mediaxim.com/ -- video4linux-list mailing list Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe https://www.redhat.com/mailman/listinfo/video4linux-list