Opened 12 years ago

Closed 12 years ago

Last modified 12 years ago

#5718 closed defect (invalid)

ATSC EIT not working correctly

Reported by: j.h.klug@… Owned by: Isaac Richards
Priority: minor Milestone: unknown
Component: mythtv Version: 0.21
Severity: medium Keywords: eit atsc
Cc: Ticket locked: no


I am attempting to re-open 3951. Apparently I can't do that so I have to start a new one.

Basically the EIT information reported by Myth is unreliable. The title on one particular sub channel is always "DTV Program" (2-2).

The descriptions are frequently for the wrong programs.

In the example attachment log, 2-2 is reported as "DTV Program" and the description of 17-2 is incorrect. If I go to "Watch TV" on 2-2, it reports the title as "DTV Program". I have a set top box and a digital television that contradict this.

I am using gentoo media-tv/mythtv-0.21_p18116 with PCHDTV HD5500.

Attachments (1)

mythbackend.log.bz2 (21.7 KB) - added by j.h.klug@… 12 years ago.
mythbackend log file options important,general,eit,channel,siparser

Download all attachments as: .zip

Change History (8)

Changed 12 years ago by j.h.klug@…

Attachment: mythbackend.log.bz2 added

mythbackend log file options important,general,eit,channel,siparser

comment:1 Changed 12 years ago by danielk

Resolution: invalid
Status: newclosed

You need to talk to your broadcaster, they are sending out the incorrect information.

comment:2 Changed 12 years ago by j.h.klug@…

What in the log indicates that the problem is with the broadcaster? I repeat, this does not happen with my TV or with my set top box.

comment:3 Changed 12 years ago by danielk

The log wasn't actually detailed enough, but it's a fairly simple diagnosis MythTV does not insert "DTV Program" unless instructed to. Your TV and set-top box have probably licensed GemStar? data which is also available as an encrypted stream. Look for "GemStar?", "TV Guide" or similar in the TV/STB literature.

If this is in the US, you can complain to your broadcaster and the FCC. The broadcaster is required by law to send TV listing data in the clear in addition to any encrypted information they may optionally transmit. Many broadcasters do not follow these laws, but the FCC may at any time choose to start the process of pulling their broadcasting license if they have reports on file. Neither the FCC nor the Attorney General not monitors broadcasters' compliance with the law themselves, they depend on private citizens like you to report non-compliance with the law.

comment:4 Changed 12 years ago by anonymous

I can straighten out the title of Channel 2-2 programs by using gentoo Myth mythtv-0.20.2_p15634. I just installed the 0.20 level, and it fixed channel 2 completely (desciptions and title). A should also mention that I use AMD64.

The incorrect description on channel 17 is almost correct, it just appears to be delayed on both levels of mythtv.

For instance, a program on 17 at 11PM may have a description at 12:30AM or 1AM. This problem seems to affect all subchannels of 17. There is a small chance the description will be correct, but not often. They seem to be for the correct sub channel, but not the correct time.

Neither my TV nor my set top box can display any downloaded icons, nor do they mention Gemstar or TV guide. In face my TV doesn't even have a schedule listed in the instructions or on the menu. All it can do is display the title of the current program and its description, which matches my set top box, but not MythTV for channel 17, including watch TV.

My set top box is the Echostar DTVPAL (misnomer, not PAL, but ATSC). From the DTVPAL manual: If you do not have a TV Guide On Screen or Guide Plus Device, you will be able to use the DTVPal's built in Program Guide.

This guide does not bear a Gemstar or TV Guide logo, which my DVD recorder has. It does have an Echostar Logo.

My DVD recorder displays a week of listings, and has many channels I cannot receive. The set top box only displays about one day of listings for most channels, and only lists ones that I can at least partially receive.

comment:5 Changed 12 years ago by j.h.klug@…

After reading other posts on mythtv problems I realized that gentoo uses subversion. I deleted the local repository, deleted all the ebuild files, resynced, rebuilt, and got the title problem fixed, so there is no regression.

Part of my problem may have been leftover local patches but they couldn't be there any more. I still have a problem with descriptions on channel 17.

comment:6 Changed 12 years ago by j.h.klug@…

The problem on 2-2 with Myth .21 has re-appeared. Starting at 2AM, 11 hours from now, MythTV says the schedule is nothing but DTV program. My set top box has what appears to be a correct schedule for another 23 hours after that, or about 1.5 days of schedule for that subchannel.

It will be interesting to see if MythTV gets lost on channel 2-2 and then stays lost forever, and if it once again it says "DTV program" at all times on that channel. If so, it would point to a bug in .21 for this part of the problem.

A work around might be to purge the schedule database occasionally.

I have now noticed that 2 and 17 tend to carry their programming information out 8 hours longer than anyone else.

comment:7 Changed 12 years ago by j.h.klug@…

The schedule went solid to "DTV Program" on 2-2 (descriptions gone too).

I fixed it by going to mysql:

mysql TRUNCATE TABLE program;

After clearing the table the schedule started straightening itself out. Maybe I should do that every morning with a cron job?

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