From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-iw0-f174.google.com ([209.85.214.174]:61479 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757577Ab0GHWK3 (ORCPT ); Thu, 8 Jul 2010 18:10:29 -0400 Received: by iwn7 with SMTP id 7so1364062iwn.19 for ; Thu, 08 Jul 2010 15:10:29 -0700 (PDT) Message-ID: <4C364CD3.3080106@gmail.com> Date: Thu, 08 Jul 2010 18:10:27 -0400 From: Ivan MIME-Version: 1.0 To: Devin Heitmueller CC: linux-media@vger.kernel.org Subject: Re: em28xx: success report for KWORLD DVD Maker USB 2.0 (VS-USB2800) [eb1a:2860] References: <4C353039.4030202@gmail.com> <4C360E64.3020703@gmail.com> <4C362C6E.5050104@gmail.com> <4C363692.5000600@gmail.com> <4C364416.3000809@gmail.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: On 07/08/2010 05:49 PM, Devin Heitmueller wrote: > That card does have an onboard scaler, although it's not clear to me > why it isn't working. Exactly what command line did you use? At first, I was always using mplayer tv:// -tv device=/dev/video1:input=1:norm=NTSC which defaults to a resolution of 640x480. This output looked correct (except for vertical stripes) in kernel 2.6.32-23-generic, but was horizontally shifted after I updated to the current mercurial sources. Then I noticed that mplayer tv:// -tv device=/dev/video1:input=1:norm=NTSC:width=720 gives a correct picture with current hg source. >> v4l2: 1199 frames successfully processed, -3 frames dropped. >> ... > > Yeah, I don't know. You would have to ask the mplayer/mencoder people. Ah, so those statistics are generated by mplayer, then, not by v4l. >> It would also seem that V4L doesn't actually discard any frames... >> ...blah blah blah about mencoder... > > Again, this would be an mplayer/mencoder thing. I guess I'm just trying to confirm that v4l doesn't try to enforce a strict NTSC framerate, but just passes all frames on even if they appear at a slightly different framerate. Ivan