Bug #1648
Wierd display issues with DVB-C
100%
Description
Hello,
I don't know the technical term for this, but a guess is pixelation.
I don't know what's causing this behaviour. DVB, HTSP, descrambling or muxes. (using DVB)
I don't know if this is already on the bugtracker, if it is then Im sorry.
You can read the full story on tvheadend forum https://www.lonelycoder.com/redmine/boards/14/topics/6967
I've uploaded 2 clips in mkv. 1 HD and 1 SD.
Thank you 
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History
Updated by Adam Sutton over 11 years ago
Updated by - Status changed from New to Need feedback
Can you check whether this is happening with FTA channels, most likely this is related to descrambling (given its DVB-C I wouldn't expect transmission errors).
Adam
Updated by Johan Moe over 11 years ago
Updated by I have the same issue, but it only occurs on TV4 HD, the same channel as Jim Larz mentions in the forum. This is the only 1080i channel available on Comhem which doesn't require CI+, so it can't be compared with FTA channels. I'll provide more details of my setup when I'm back home.
Best regards
Johan
Updated by jim larz over 11 years ago
Updated by Sorry for the late answer.
Im not running TVHeadend any longer. But I only had access to 2 FTA SD channels and those did not suffer from this.
However, not all encoded channels did either.
I was using cws when viewing encrypted channels.
Typed from phone.
Updated by Fredrik Ahlin over 11 years ago
Updated by If someone need help to test or reproduce something, just let me know!
Updated by Fredrik Ahlin over 11 years ago
- File tvheadend_fault.zip tvheadend_fault.zip added
Adam Sutton wrote:
Can you check whether this is happening with FTA channels, most likely this is related to descrambling (given its DVB-C I wouldn't expect transmission errors).
There are no FTA HD channels on the Comhem network, but there are 4 HD channels that does not require CI+
- SVT1 HD (720p) - works fine
- SVT2 HD (720p) - works fine
- TV4 HD (1080i) - doesn't work, see capture in attachement
- C More Series HD (1080i) - works fine, but used to have same problem as TV4 HD
Updated by Daniel Forsberg over 11 years ago
Updated by Hi,
I have the same problem playing TV4 HD.
I opend a new issue #1737 sorry about that.
recordings look the same on other players.
screenshot: https://dl.dropboxusercontent.com/u/9789478/screenshot002.png
recording sample: https://dl.dropboxusercontent.com/u/9789478/Studio_-Hockey-VM.mkv
trying to play/recorde TV4 HD in Sweden
tvh log: http://sprunge.us/OZdY
but It seems to work if I set media container to Pass through for recordings...
sample: https://dl.dropboxusercontent.com/u/9789478/Ishockey_Ishockey.ts
it could be related to #228 becouse when I play TV4 HD I get MPEG2 Audio only in xbmc and if I play the recorded file I get AC3 Audio only...
Updated by Adam Sutton over 11 years ago
- Category changed from DVB to Parsers
I think the problem, from the various descriptions, is in the TVH H264 parser. Unfortunately this is an area of the code I've no experience with, so need to find someone to take a look.
Adam
Updated by Pedro Hill over 11 years ago
Updated by i have this exact problem with tv4hd on comhem, let me know if i can be of any help.
Updated by jim larz over 11 years ago
Hi Adam,
How's it going?
Would be nice to see this issue fixed.
bounce
Updated by
Updated by Jaroslav Kysela almost 10 years ago
Updated by 
Use latest development code (actually v3.9-2376-g65fd963) . There are many new fixes in the parser routines.
Updated by Jaroslav Kysela almost 10 years ago
If it's FTA - just grab the service stream (link is available in the service grid - configuration) using wget or curl. ... 60 seconds.
If it's scrambled - compile tvheadend with --enable-tsdebug , then pass the tsdebug output directory to tvheadend - "--tsdebug <directory>" option and upload the *mux.ts file here.. The file will be created when you tune the service/channel (also for 60 seconds).
I'll try check what's wrong.
Updated by J B almost 10 years ago
Apologies, I've was provided bad intel. It actually works with the latest code This bug can be closed as far as I'm concerned. Thanks for your effort.
Updated by Fredrik Ahlin over 8 years ago
I can also confirm that the bug is fixed in the main branch