Opened 15 years ago
Closed 15 years ago
#6527 closed defect (fixed)
DVB-T HDHomeRun Doesn't Tune to Channels
Reported by: | Owned by: | Nigel | |
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Priority: | minor | Milestone: | 0.22 |
Component: | MythTV - Recording | Version: | 0.21-fixes |
Severity: | medium | Keywords: | |
Cc: | Ticket locked: | no |
Description
Been testing a DVB-T HDHomeRun in NZ with out H.264 based terrestrial network. So far I've had it working fine with VLC and using hdhomerun_config to save a TS stream.
The MythTV builds I've tried are
- 0.21.0+fixes19961-0ubuntu8
This comes with Mythbuntu 9.04 and won't even scan DVB channels
- 0.21.0+fixes-20462-openglvdpau-0ubuntu1
This channel scans correctly but won't tune.
Change History (9)
comment:1 Changed 15 years ago by
comment:2 Changed 15 years ago by
I used the following command to dump a stream to disk
hdhomerun_config ffffffff set /tuner0/channel 29 && hdhomerun_config ffffffff set /tuner0/program 1200 && hdhomerun_config ffffffff save /tuner0 tvone.ts
This would playback with both mplayer and the Internal MythTV player so there are no codec issues.
comment:3 Changed 15 years ago by
Steven, could you try the "Use quick tuning" option? (mythtv-setup -> Input Connections, then restart the backend). Try the opposite value (Always or Never).
comment:4 Changed 15 years ago by
Already tried both values. Doesn't appear to make a difference.
Ran TCPdump to monitor the communication at the HDHomeRun is being configured correctly, and data is streamed to the MythTV box, but no recording is being made.
comment:5 Changed 15 years ago by
Owner: | changed from Isaac Richards to Nigel |
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Status: | new → assigned |
comment:6 Changed 15 years ago by
Hello There is a working temporaru fix for at least Mythbuntu 9.04 - enable weekly updates (fixes, not trunk). Se this post: http://www.silicondust.com/forum/viewtopic.php?t=7228
comment:7 Changed 15 years ago by
Milestone: | 0.21.1 → 0.22 |
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comment:8 Changed 15 years ago by
OK. Steve, 19961 would never have worked because that was before the DVB-T HDHR changes were added to 0.21-fixes. I'm still trying to analyse your debug output, and how it differs from an MPEG2 stream from the device, but I'm not sure that I know how to fix this. One of the other devs might be more qualified - it might be an H264 thing, or something unique in the PMT/PID/et c.
SpiffBB, yes the default Mythbuntu is too old (at that thread indicates), but Stephen's latter rev is OK for the device. I think the problem is that this is an experimental H264 over DVB-T service?
comment:9 Changed 15 years ago by
Resolution: | → fixed |
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Status: | assigned → closed |
Mike from SiliconDust? very kindly created a patch in #6874 that works around keyframe detection for H264. It was committed in 0.21-fixes [21376] and earlier in trunk [20771]. Steven, it is likely that this fixes the problem?
Some more info
During an attempt to play a channel it appears to lock to the correct pids.
Also I've run the backend in debug mode and got the following output