From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from moutng.kundenserver.de ([212.227.17.10]:56541 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751258AbZIJJdd (ORCPT ); Thu, 10 Sep 2009 05:33:33 -0400 Message-ID: <4AA8C7F3.9090609@nildram.co.uk> Date: Thu, 10 Sep 2009 10:33:39 +0100 From: Lou Otway Reply-To: lotway@nildram.co.uk MIME-Version: 1.0 To: Eduard Huguet CC: linux-media@vger.kernel.org Subject: Re: Nova-T 500 Dual DVB-T and h.264 References: <4AA7AE23.2040601@nildram.co.uk> <4AA8B235.3050407@nildram.co.uk> <617be8890909100110jaaedf51h637d114d30382b99@mail.gmail.com> <4AA8C07C.9030804@nildram.co.uk> <617be8890909100217y1c13cdfbw7d95e1f714549b71@mail.gmail.com> In-Reply-To: <617be8890909100217y1c13cdfbw7d95e1f714549b71@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: Eduard Huguet wrote: > 2009/9/10 Lou Otway : >> Eduard Huguet wrote: >>> 2009/9/10 Lou Otway : >>>> Eduard Huguet wrote: >>>>> Lou Otway nildram.co.uk> writes: >>>>> >>>>>> Hi, >>>>>> >>>>>> Does anyone have experience of using the Hauppuage Nova-T 500 with >>>>>> DVB-T >>>>>> broadcasts with h.264 and AAC audio? >>>>>> >>>>>> DTT in New Zealand uses these formats and I'm seeing poor performance >>>>>> from the Nova-T card. My thinking is that it was probably not conceived >>>>>> for >>>>>> dealing with dual h264 streams. >>>>>> >>>>>> Has the PCIe HVR-2200 been tested with dual h.264? I was wondering if >>>>>> this card might have better performance. >>>>>> >>>>>> Thanks, >>>>>> >>>>>> Lou >>>>> Hi, AFAIK the card just tunes to the desired frequency, applies >>>>> configured >>>>> filters (to select the desired station through its PID number), and >>>>> handles the >>>>> received transport stream to the calling application. It's up to the >>>>> lastest to >>>>> properly decode it. Check that the software you are using is properly >>>>> capable of >>>>> decoding this kind of content. >>>>> >>>>> Best regards, Eduard Huguet >>>> Hi, >>>> >>>> the problem isn't to do with playback as I have another type of adapter >>>> card >>>> that creates a TS, from the same mux, that is played back with no >>>> problem. >>>> >>>> It seems that the problem only happens when using the Nova-T card. >>>> >>>> DTT in NZ has services with 1080i video format, I'm not sure that there >>>> are >>>> many other places in the world where 1080i h.264 content is broadcast >>>> using >>>> DVB-T, hence I was thinking that this combination may not have been well >>>> tested. >>>> >>>> Thanks, >>>> >>>> Lou >>>> >>> I don't know how this it works in NZ. Here in Spain there is at least >>> one station (TVC's 3HD) emitting HD content through TDT, and it works >>> flawlessly with a Nova-T 500 (as I have one). I'm not sure if contents >>> are 1080 or 720, though. >>> >>> There were some problems watching these channels through MythTV, but >>> they were definitely decoding related. With current MythTV trunk they >>> are fine. >>> >>> Anyway, as I said before, theoretically a DVB card doesn't know what >>> kind of streams contains the signal it tunes. Decoding & parsing is >>> handled by the app. >>> >>> Best regards, >>> Eduard Huguet >>> -- >> I'm not using MythTV or any other type of Media playing application. >> >> In any case, I see very different performance between the two different >> types of card, when presented with the same input. >> >> I'll gather some more data, if I can draw any new conclusions I'll update >> the list. >> >> Best, >> >> Lou >> >> >> > > Maybe it's a problem of tuner sensibility. Is the low noise amplifier > (LNA) activated for the Nova-T card? > regards > Eduard > -- That's something I hadn't considered. I'll check but I thought that the LNA was only applicable to the Nova-TD 500 (which has 2xRF inputs)? Does the Nova-T 500, with only a single RF input have the LNA? Thanks, Lou