[mythtv-users] DVB newbie: 1st MythTV-0.18 impression

Mon Apr 25 02:21:18 UTC 2005

You probably see a lot of 'bad stream' errors as well huh ?

http://watmough.blogspot.com/2005/03/bug-fix-for-atsc-channel-changing-on.html

That's my fix for it. It fixes switching between channels with the
same pids, just by removing the reset feature when the channels get
switched. Hacky but effective.

One of these days I'll actually try and work out how to really fix it.

Jonathan

On 4/24/05, Christian Schuglitsch <subjectmythtv at schugy.de> wrote:
> Dear MythTV users,
> I use Ubuntu Linux 4.1 Warty Warthog and a Twinhan VisionDTV Ter card.
> After a quite difficult installaion I have MythTV running.
> 
> Compiling MythTV took a lot of time but it took me more time to find out
> that libqt3-mysql was missing to set up the database. I've thought I
> would get an error message from ./configure.
> 
> I have chosen my DVB card and the german TVtoday video source. Then I
> have answered the questions on the console. After that I have had
> several channels but none of them worked. I have found out that I can do
> a scan manually. Initially it didn't work to enter only the frequency.
> Choosing the right bandwidth and switching the inversion off helped.
> Well, afterwards I've had every channel twice.
> 
> I needed several retries to find out the best solution I know until now:
> enter mythtv-setup
> choose the dvb card
> select the right program guide
> add all channels in xterm
> write down all xmltv IDs
> quit
> restart mythtv-setup
> delete the channels
> select the program guide
> don't add any channel in xterm
> manually enter all frequencies
> edit channels and enter icon path and xmltv ID
> uncomment all found channels in ~/.mythtv/sourcename.xmltv
> mythfilldatabse --update
> 
> This works for me. Switching channels is quite slow compared to
> xine-dvb-plugin. I have reduced the buffer to the minimum but it hasn't
> got faster
> That TVtoday program guide is quite good but recording is just based on
> its times. Sometimes the end is missing. Is it right that every channel
> has it's own epg/mhp via DVB-T?
> Maybe future versions of MythTV (it isn't version 1.0 yet)  can use
> either this or the other one for each channel.
> Removing commercials works quite well but some bad companies place their
> logo in one of the upper corners.
> I'm missing videotext and I have a problem with NDR regional channels.
> This is information from another German region but for me it's almost
> the same:
> 
> Programmname                            Service ID    Video PID    Audio
> PID    PCR PID    Videotext PID    PMT/Daten PIDs
> NDR Fernsehen Niedersachsen    129                4625
> 4626            4625            4628                        4624
> MDR Fernsehen                              100                4657
>             4658            4657            4660                        4656
> WDR Köln                                        262
> 4641                 4642            4641            4644
>          4640
> hr-fernsehen                                    65
> 4673               4674             4673            4676
>         4672
> NDR FS Hamburg                            130              4625 / 4673
> 4626 / 4674  4625 / 4673     4628                        4880
> NDR FS Schleswig Holstein             131            4625 / 4641   4626
> / 4642  4625 / 4641     4628                        5136
> NDR FS Mecklenburg Vorpommern 132          4625 / 4657    4626 / 4658
> 4625 / 4657    4628                        5392
> 
> I can use the xmltv ID "ndr.de" only once. For the other NDRs the
> program is unknown.
> When I switch from one NDR channel to another I have no sound and a bad
> picture quality. Then I have to switch to another channel that doesn't
> use the same Audio/Video PIDs and then switch back. So when there's no
> regional program I mustn't switch from NDR FS SH to NDR FS NDS/HH/MVP or
> when there's regional program e.g. hr-Fernsehen to NDR FS Hamburg directly.
> 
> The error message is:
> 
> [mpeg2video @ 0xb7775150]invalid mb type in P Frame at 6 28
> [mpeg2video @ 0xb7775150]00 motion_type at 1 21
> [mpeg2video @ 0xb7775150]00 motion_type at 10 34
> [mpeg2video @ 0xb7775150]00 motion_type at 8 17
> [mpeg2video @ 0xb7775150]ac-tex damaged at 2 22
> [mpeg2video @ 0xb7775150]00 motion_type at 3 13
> [mpeg2video @ 0xb7775150]00 motion_type at 34 14
> [mpeg2video @ 0xb7775150]00 motion_type at 43 15
> [mpeg2video @ 0xb7775150]00 motion_type at 19 12
> [mpeg2video @ 0xb7775150]00 motion_type at 41 14
> [mpeg2video @ 0xb7775150]slice mismatch
> [mpeg2video @ 0xb7775150]00 motion_type at 9 14
> [mpeg2video @ 0xb7775150]00 motion_type at 23 18
> [mpeg2video @ 0xb7775150]ac-tex damaged at 4 22
> [mpeg2video @ 0xb7775150]00 motion_type at 9 30
> [mpeg2video @ 0xb7775150]mb incr damaged
> [mpeg2video @ 0xb7775150]00 motion_type at 11 10
> [mpeg2video @ 0xb7775150]00 motion_type at 30 11
> [mpeg2video @ 0xb7775150]00 motion_type at 1 12
> [mpeg2video @ 0xb7775150]invalid cbp at 0 13
> [mpeg2video @ 0xb7775150]ac-tex damaged at 0 14
> [mpeg2video @ 0xb7775150]00 motion_type at 9 15
> [mpeg2video @ 0xb7775150]ac-tex damaged at 0 16
> 
> and so on.....
> 
> I can reproduce it at any time.
> 
> And one thing is missing: A transport stream contains four channels and
> we should be able to record/watch all of them simultaniously.
> 
> Regards
> 
> Schugy
> 
> 
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