Date: Mon, 9 Sep 2013 22:06:42 +0200 From: Juergen Lock <nox@jelal.kn-bremen.de> To: Milan Obuch <freebsd-multimedia@dino.sk> Cc: freebsd-multimedia@freebsd.org, Juergen Lock <nox@jelal.kn-bremen.de> Subject: Re: ITE Technologies, Inc. DVB-T TV Stick [success report] Message-ID: <20130909200642.GB38609@triton8.kn-bremen.de> In-Reply-To: <20130909093044.76c70f25@zeta.dino.sk> References: <20130827230542.4b443eaf@zeta.dino.sk> <521D93E4.5070606@bitfrost.no> <20130828121240.7bf77ae1@zeta.dino.sk> <201309082011.r88KBbx7079350@triton8.kn-bremen.de> <20130909093044.76c70f25@zeta.dino.sk>
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On Mon, Sep 09, 2013 at 09:30:44AM +0200, Milan Obuch wrote: > On Sun, 8 Sep 2013 22:11:37 +0200 (CEST) > Juergen Lock <nox@jelal.kn-bremen.de> wrote: > > > In article <20130828235428.45b51b76@zeta.dino.sk> you write: > > >On Wed, 28 Aug 2013 12:12:40 +0200 > > >Milan Obuch <freebsd-multimedia@dino.sk> wrote: > > > > > >> On Wed, 28 Aug 2013 08:08:36 +0200 > > >> Hans Petter Selasky <hps@bitfrost.no> wrote: > > >> > > >> > On 08/27/13 23:05, Milan Obuch wrote: > > >> > > Hi, > > >> > > > > >> > > today I got ITE Technologies, Inc. DVB-T TV Stick and would > > >> > > like to use it under FreeBSD. As I did not try anything like > > >> > > this before, I would like some help here. First what I did... > > >> > > > > >> > > Some product info is on http://www.notonlytv.net/p_lv52t.html - > > >> > > not much, as usual. > > >> > > > > > > Btw google flags this site as serving malicious code... > > No idea why - anyway, not much interesting info for us :) > > > >[ snip ] > > > > > >> > Hi, > > >> > > > >> > Looks like your device is detected and ready to use! > > >> > > > > > > >[ snip ] > > > > > >> Yes, looks so - and today i did a multimedia/vdr build according to > > >> https://wiki.freebsd.org/VDR - it seems like it will work. I need > > >> to go through some trial-and-error process to learn a bit about > > >> it. I will try vlc too, so I can gai some experience with it. > > >> > > > > > >After some fiddling I found how to use w_scan to get available > > >programs and create channelst list for VDR. Now I am able to watch > > >TV on my notebook. I did not see how to watch TV with vlc, yet, but > > >it is low priority for me, now. I am going to play a bit more with > > >VDR to understand plugin possibilities etc. > > > > > Feel free to ask if you still have questions... > > > > Btw is this a dual tuner i.e. do you get /dev/dvb/adapter0 and 1? > > If yes you might want to test if it can really use both tuners or > > if that causes stream corruptions like with my af9035 tuner. To > > test this play two channels from different muxes, for example using > > vdr-plugin-streamdev in parallel with watching one channel via > > vdr-sxfe, or play two channels from different muxes both via > > streamdev. > > > > Yes it is dual tuner, which was one reason I got this one insted of > some cheaper single tuner. I have not yet cable comfortably available > so I can not do much tests, but I will try some time later. How will > such corruption manifest itself? I saw on some DVB-T STB some > artifacts, square areas affected when signal was weaker or disturbed, > but could this be somehow distinguished? > Yes that's what it looks like, you can watch the uncorrected error count via vdr-plugin-femon (UNC) provided the tuner driver reads out that info, if it does and it's non-zero artefacts are caused by a too weak/corrupted signal. There also is the BER value that some more drivers read out, that can be nonzero and yet the errors may be correctable, but if it's constantly zero you can assume video corruptions aren't caused by the antenna signal. > I will look at streamdev usage and report when anything interesting > will be found, given some prerequisites are met for such test... > > > If you do get corruptions you can try forcing hw pidfiltering by > > adding "-m dvb-usb-init.force_pid_filter_usage=1" to webcamd_flags > > in rc.conf and see if that helps. (Or I just see maybe it's > > "-m dvb_usb_core.force_pid_filter_usage=1" for your tuner.) > > > > And if that doesn't help you may want to add "-D 0" to vdr_flags > > in rc.conf so that it only uses one tuner so as not to mess up > > recordings etc. > > > > And let me know what you find so we can add this info to the wiki... > > > > I did not test supplied Windows app yet, manufacturer writes explicitly > about dual channel usage, so one channel could be viewed while second > one being recorded, so I hope this will work. > > Regards, Milan Good luck, :) Juergen PS: If this turns out to not work properly I can recommend the dual dib0700 I added to the wiki, and btw it's remote works as well and can even be replaced by an universal remote configured for a different rc5 remote with more buttons. (see wiki)
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