From mhonarc@convergence.de Mon May 28 09:51:26 2001 +0200 Return-Path: Delivered-To: mhonarc@limes.convergence.de Received: (qmail 16796 invoked by uid 0); 28 May 2001 09:51:26 -0000 Received: from chambertin.convergence.de (212.84.236.2) by limes.convergence.de with SMTP; 28 May 2001 09:51:26 -0000 Received: from localhost ([127.0.0.1] helo=chambertin) by chambertin.convergence.de with esmtp (Exim 3.16 #7 (Debian)) id 154JZo-0008Ca-00; Mon, 28 May 2001 11:44:40 +0200 Received: with LISTAR (v0.129a; list linux-dvd); Mon, 28 May 2001 11:43:37 +0200 (MEST) Received: from [217.197.164.7] (helo=web.komrel.net) by chambertin.convergence.de with esmtp (Exim 3.16 #7 (Debian)) id 154JX7-00088Y-00 for ; Mon, 28 May 2001 11:41:54 +0200 Received: from localhost (michalj@localhost) by web.komrel.net (8.9.3/8.9.3) with SMTP id LAA31142; Mon, 28 May 2001 11:11:06 +0200 Date: Mon, 28 May 2001 11:11:06 +0200 (MET DST) From: Michal Jeczalik To: linux-dvd@linuxtv.org cc: tj@wind.pl Subject: [linux-dvd] video scrambling Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Approved-By: mhonarc@convergence.de X-listar-version: Listar v0.129a Sender: linux-dvd-bounce@linuxtv.org Errors-to: linux-dvd-bounce@linuxtv.org X-original-sender: mhonarc@convergence.de Precedence: bulk X-list: linux-dvd Status: O X-Status: X-Keywords: X-UID: 1 Hello! We have a problem. When we write() a mpeg2, first two-three seconds of the spot are a little bit scrambled, both video and audio. What this may be caused by? We have latest CVS version of drivers and RH 7.1 (with 2.4.4 kernel). This is NOT caused by disc I/O! Anybody can help? -- Michal Jeczalik From mhonarc@convergence.de Mon May 28 11:45:03 2001 +0200 Return-Path: Delivered-To: mhonarc@limes.convergence.de Received: (qmail 24121 invoked by uid 0); 28 May 2001 11:45:03 -0000 Received: from chambertin.convergence.de (212.84.236.2) by limes.convergence.de with SMTP; 28 May 2001 11:45:03 -0000 Received: from localhost ([127.0.0.1] helo=chambertin) by chambertin.convergence.de with esmtp (Exim 3.16 #7 (Debian)) id 154LOA-0000W8-00; Mon, 28 May 2001 13:40:46 +0200 Received: with LISTAR (v0.129a; list linux-dvd); Mon, 28 May 2001 13:40:17 +0200 (MEST) Received: from [194.8.194.109] (helo=mr200.netcologne.de ident=mirapoint) by chambertin.convergence.de with esmtp (Exim 3.16 #7 (Debian)) id 154LNh-0000Vx-00 for ; Mon, 28 May 2001 13:40:17 +0200 Received: from titan.metzler (dial-195-14-250-54.netcologne.de [195.14.250.54]) by mr200.netcologne.de (Mirapoint) with ESMTP id AGD48472; Mon, 28 May 2001 12:25:31 +0200 (CEST) Received: (from mocm@localhost) by titan.metzler (8.11.2/8.11.0/SuSE Linux 8.11.0-0.4) id f4SASiA02112; Mon, 28 May 2001 12:28:44 +0200 From: "Marcus O.C. Metzler" Message-ID: <15122.10331.852908.809487@titan.metzler> Date: Mon, 28 May 2001 12:28:43 +0200 (MEST) To: Michal Jeczalik Cc: linux-dvd@linuxtv.org, tj@wind.pl Subject: [linux-dvd] video scrambling In-Reply-To: References: X-Mailer: VM 6.75 under 21.1 (patch 14) "Cuyahoga Valley" XEmacs Lucid Reply-To: Mime-Version: 1.0 (generated by tm-edit 1.6) Content-Type: text/plain; charset=US-ASCII X-listar-version: Listar v0.129a Sender: linux-dvd-bounce@linuxtv.org Errors-to: linux-dvd-bounce@linuxtv.org X-original-sender: mocm@convergence.de Precedence: bulk X-list: linux-dvd Status: O X-Status: X-Keywords: X-UID: 2 Michal Jeczalik writes: > Hello! > > We have a problem. When we write() a mpeg2, first two-three seconds of the > spot are a little bit scrambled, both video and audio. What this may be > caused by? We have latest CVS version of drivers and RH 7.1 (with 2.4.4 > kernel). This is NOT caused by disc I/O! > > Anybody can help? > -- > Michal Jeczalik > > This is because of the autostart function of the decoding process. I set a limit at which buffer filling decoding starts. If the limit is to low, you get the effect you see. If the limit is to high it sometimes won't start. But 2-3 seconds is a bit much. Usually I only see it for a fraction of a second. What kind of mpegs are you writing? Maybe their multiplexing is not so good. If you want to play around with the driver, you can try to change lines 1087 ( if (vp > 90) { ) and 1101 ( if (ap > 90) { ) in decoder.c. The 90 stands for 90% buffer filling, thats when decoding starts. Do you use poll or select, to see if you can write to the device. It could also be that you are not writing big enough blocks of data, or maybe too big. Regards Marcus --------------------------------------------------------------------- Dr. Marcus Metzler mocm@netcologne.de http://www.metzlerbros.de mocm@convergence.de http://www.convergence.de Tel: +49(0)2234 433113 Convergence Integrated Media GmbH Rosenthaler Str. 51 D-10178 Berlin --------------------------------------------------------------------- > From mhonarc@convergence.de Tue May 29 15:12:41 2001 +0200 Return-Path: Delivered-To: mhonarc@limes.convergence.de Received: (qmail 32064 invoked by uid 0); 29 May 2001 15:12:41 -0000 Received: from chambertin.convergence.de (212.84.236.2) by limes.convergence.de with SMTP; 29 May 2001 15:12:41 -0000 Received: from localhost ([127.0.0.1] helo=chambertin) by chambertin.convergence.de with esmtp (Exim 3.16 #7 (Debian)) id 154l6w-00075Q-00; Tue, 29 May 2001 17:08:42 +0200 Received: with LISTAR (v0.129a; list linux-dvd); Tue, 29 May 2001 17:08:16 +0200 (MEST) Received: from [194.25.134.16] (helo=mailout00.sul.t-online.de) by chambertin.convergence.de with esmtp (Exim 3.16 #7 (Debian)) id 154kty-0005V5-00 for ; Tue, 29 May 2001 16:55:18 +0200 Received: from fwd03.sul.t-online.de by mailout00.sul.t-online.de with smtp id 154kty-0005tq-05; Tue, 29 May 2001 16:55:18 +0200 Received: from tigger.uni-muenster.de (520036086827-0001@[217.80.197.19]) by fmrl03.sul.t-online.com with esmtp id 154ktx-1rjOBkC; Tue, 29 May 2001 16:55:17 +0200 Received: from tigger (localhost [127.0.0.1]) by tigger.uni-muenster.de (8.11.2/8.11.2/SuSE Linux 8.11.1-0.5) with SMTP id f4TF5fe04494 for ; Tue, 29 May 2001 17:05:41 +0200 Content-Type: text/plain; charset="iso-8859-1" From: Marcus Daniel To: linux-dvd@linuxtv.org Subject: [linux-dvd] Re: [linux-dvb] Streaming DVB/DVD data over a 2 computer network? Date: Tue, 29 May 2001 17:05:40 +0200 X-Mailer: KMail [version 1.2] References: In-Reply-To: MIME-Version: 1.0 Message-Id: <01052917054000.02682@tigger> Content-Transfer-Encoding: quoted-printable X-Sender: 520036086827-0001@t-dialin.net X-Approved-By: dirk@convergence.de X-listar-version: Listar v0.129a Sender: linux-dvd-bounce@linuxtv.org Errors-to: linux-dvd-bounce@linuxtv.org X-original-sender: dirk@convergence.de Precedence: bulk X-list: linux-dvd Status: O X-Status: X-Keywords: X-UID: 3 On Tuesday, 29. May 2001 16:01, you wrote: > xine (http://sourceforge.net/projects/xine/) kann MPEG-2 Streams > abspielen. Damit sollte es klappen, die Bandbreite von 11 MBit ist > ausreichend. Ah thanks I will try that. I just managed to get vlc compiled, though I s= eem=20 to have some stability issues. It plays straight VDR files but wihtout so= und=20 and gives me: PES trashed - decoder fifo full ! over NFS. I will try it with a local coppy of the vdr file now and will t= ry=20 to compile xine. THe thing with WLANs is that its 11M/s including a lot of overhead, so yo= u=20 actualy get about 300k/s, maybe some more. So playback of recorded files over the network seems feasible, but how ab= out=20 streaming it straight from the card? Is there a way?=20 vlc (from videolan.org) seems to be able to display TS streams over a=20 network. Is the stream from the card a TS stream? Could I do somethig to = get=20 it over the network? (I think netcat might be a useful tool, have to loo= k=20 into it). Thanks Marcus