[mythtv-users] Jason Beck's QAM guide Now on the Wiki

Noah Markon nmarkon at gmail.com
Fri Feb 10 16:23:28 UTC 2006


Interesting, my atscsrcid for some of my HD stations have changed from
NULL back to some numbers.

On 2/9/06, Noah Markon <nmarkon at gmail.com> wrote:
> On 2/9/06, R. G. Newbury <newbury at mandamus.org> wrote:
> > Noah Markon wrote:
> > >> Wild guesses:
> > >> Check that these channels are denoted as ATSC on the channel information
> > >> page reached from the channel editor in mythtv-setup.
> > >> Set the atscsrcid to null or zero for the SD channels. I noticed some
> > >> oddities on my digital SD channels before I forced that setting to zero
> > >> ( I don't do HD... no output with a VIA SP13000 so I'm not even trying!).
> > >> I presume that the 'azap -r somechannel' plus 'cat
> > >> /dev/dvb/adapter0/dvr0 > test.mpg' followed by 'mplayer test.mpg' works.
> > >>
> > >> But does 'azap -r somechannel' followed by  'mplayer -vid x -aid y
> > >> /dev/dvr/adapter0/dvr0'  work, where you plug in the vid and aid numbers
> > >> found in the atscscan run?  If the latter works, I wonder if the
> > >> serviceid is actually correct.
> > >>
>
> Ok I just thought I'd report back on what happened. I tried both, cat
> /dev/dvb... and mplayer /dev/dvb.. and they both seemed to work ok on
> the SD channels. It's a little hard for me to tell since I don't get
> any sound on my server, and I don't know how to run the second command
> over a network, or output the video into a file then view it on a
> faster machine.  However I did not encounter any slow-motion in the
> video.
>
> I tried running the HD channel that was causing my frontend to crash,
> and I get the following ( i edited out some stuff)  errors when I
> played through mplayer:
> mplayer /dev/dvb/adapter0/dvr0 -vid 16 -aid 17 -vo x11 -geometry 800x600
> a52: CRC check failed!
> VDec: vo config request - 1920 x 1080 (preferred csp: Planar YV12)
> VDec: using Planar YV12 as output csp (no 0)
> Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
> VO: [x11] 1920x1080 => 1920x1080 Planar YV12
> SwScaler: using unscaled Planar YV12 -> BGR 16-bit special converter
> a52: CRC check failed!   -0.377 ct: -0.050  16/ 16 56% 23% 47.6% 0 0
> <--I got a ton of these.
>
> Too many video packets in the buffer: (140 in 8397293 bytes).
> Maybe you are playing a non-interleaved stream/file or the codec failed?
> For AVI files, try to force non-interleaved mode with the -ni option.
> A:88217.3 V:88217.6 A-V: -0.324 ct:  0.448 209/209 39% 22% 75.5% 45 0
>
> I then tried some of the other HD channels that have been working, and
> they each have the same type of errors, so I'm guessing the problem is
> related to my slow server. However that' just a guess.
>
> Ok since these channels work fine when i tune them through the azap
> methods, but they don't when I tune them in myth, where does that
> leave me? What are my next steps to try?
>


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