2009/9/10 Lou Otway <lotway@xxxxxxxxxxxxx>: > Eduard Huguet wrote: >> >> 2009/9/10 Lou Otway <lotway@xxxxxxxxxxxxx>: >>> >>> Eduard Huguet wrote: >>>> >>>> 2009/9/10 Lou Otway <lotway@xxxxxxxxxxxxx>: >>>>> >>>>> Eduard Huguet wrote: >>>>>> >>>>>> Lou Otway <lotway <at> 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 > I don't know about the TD, but the regular Nova-T 500 definitely has a LNA that must be activated, that's for sure :D... Best regards, Eduard -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
