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Bug #1648

Wierd display issues with DVB-C

Added by jim larz over 8 years ago. Updated about 5 years ago.

Status:
Fixed
Priority:
Normal
Assignee:
-
Category:
Parsers
Target version:
-
Start date:
2013-05-18
Due date:
% Done:

100%

Estimated time:
(Total: 0.00 h)
Found in version:
HTS Tvheadend 3.3.484~g9370273~quantal
Affected Versions:

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 :)


Files

clips.zip (10.2 MB) clips.zip jim larz, 2013-03-03 17:09
tvheadend_fault.zip (11.2 MB) tvheadend_fault.zip Fredrik Ahlin, 2013-05-08 19:52

Subtasks

Bug #1737: problem playing 1080i livetv channel TV4 HD in swedenRejected

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History

#1

Updated by Adam Sutton over 8 years ago

  • 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

#2

Updated by Johan Moe over 8 years ago

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

#3

Updated by jim larz over 8 years ago

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.

#4

Updated by Fredrik Ahlin about 8 years ago

If someone need help to test or reproduce something, just let me know!

#5

Updated by Fredrik Ahlin about 8 years ago

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

#6

Updated by Daniel Forsberg about 8 years ago

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...

#7

Updated by Adam Sutton about 8 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

#8

Updated by Pedro Hill about 8 years ago

i have this exact problem with tv4hd on comhem, let me know if i can be of any help.

#9

Updated by jim larz about 8 years ago

Hi Adam,

How's it going?

Would be nice to see this issue fixed. :)

bounce

#10

Updated by Daniel Forsberg almost 8 years ago

bump

#11

Updated by J B over 6 years ago

I would also really appreciate a fix for this.

#12

Updated by Jaroslav Kysela over 6 years ago

Use latest development code (actually v3.9-2376-g65fd963) . There are many new fixes in the parser routines.

#13

Updated by J B over 6 years ago

This bug is till present in master I'm afraid.

#14

Updated by Jaroslav Kysela over 6 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.

#15

Updated by J B over 6 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.

#16

Updated by Fredrik Ahlin about 5 years ago

I can also confirm that the bug is fixed in the main branch :)

#17

Updated by Jaroslav Kysela about 5 years ago

  • Status changed from Need feedback to Fixed

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