From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mo-p00-ob.rzone.de ([81.169.146.162]) by www.linuxtv.org with esmtp (Exim 4.63) (envelope-from ) id 1KVfgL-0008P8-1b for linux-dvb@linuxtv.org; Wed, 20 Aug 2008 06:52:31 +0200 Received: from backend.localdomain (p54A326EA.dip0.t-ipconnect.de [84.163.38.234]) by post.webmailer.de (mrclete mo47) (RZmta 16.47) with ESMTP id K0311dk7K2fhPf for ; Wed, 20 Aug 2008 06:52:25 +0200 (MEST) (envelope-from: ) Received: from [192.168.0.2] (linux [192.168.0.2]) by backend.localdomain (Postfix) with ESMTP id 70363245BC8 for ; Wed, 20 Aug 2008 06:52:25 +0200 (CEST) Message-ID: <48ABA309.30906@boerkel.de> Date: Wed, 20 Aug 2008 06:52:25 +0200 From: =?UTF-8?B?VGhvbWFzIELDtnJrZWw=?= MIME-Version: 1.0 To: linux-dvb References: <48A90517.9000109@boerkel.de> <1219113106.4107.21.camel@pc10.localdom.local> In-Reply-To: <1219113106.4107.21.camel@pc10.localdom.local> Subject: Re: [linux-dvb] A/V sync issues with DVB-S List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: linux-dvb-bounces@linuxtv.org Errors-To: linux-dvb-bounces+mchehab=infradead.org@linuxtv.org List-ID: HI! hermann pitton wrote: Thanks for the informations. >> Is it normal, that every now and then (1-2 of 10 recordings), I get one >> serious (suddenly 30 frames off) A/V sync problem with DVB-S? > DVB-C is in general much better protected against troubles generated by > changing environmental conditions, but in case of weather conditions > which suddenly create ice on any surface, it is better to know the one > in charge even there. OK. > Means, watch your dish. Maybe birds or a cat like to stay there > sometimes or wind might move branches of a tree in the near of it. There is no tree, but could be birds. > This is card/frontend specific, but for the very few I have in critical > reception conditions, SNR below 50% is a clear indicator that I won't > have to blame any apps later. A thunderstorm comes up. Measuring the strength and SNR is not so easy now. My SAT receiver always says strength 70% and SNR 80%. My new Nova S Plus cards always report strength 97% and SNR 99%. Only my TT 1500s reported reasonable numbers like strength 63-80% and SNR 75-90%. In the end, I think overall strength and SNR is not my problem. I always get a lock. It's the glitches that happen every now and then. > After that, on normal mpeg2 DVB-S all applications should still do > fairly well, but if you go out for x264 HDTV, it is another and > completely different additional story, especially for what I see on > x86-64 quad CPUs. I am not recording x264 at the moment, meaning I have no DVB-S2 card. Thanks for the informations. Thomas _______________________________________________ linux-dvb mailing list linux-dvb@linuxtv.org http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb