Contributor
•
32 Messages
XG1v4 box Dolby processing problems
Just "upgraded" to a new XG1v4 4k box and immediately started experiencing the same intermittent center channel audio problems numerous other people have reported on several other threads.
In all cases the info button shows the signal is supposedly DD 5.1+, but on some channels it's clearly only PCM stereo, and in others it changes from literally one minute to the next. Tonight watching Late Night with Seth Meyers the center channel processing was fine whenever the studio mic was on, but when Seth would play a news clip the audio instantly reverted to two-channel stereo.
This didn't happen on my previous legacy Xfinity box, so it's quite clearly a problem in the 4k boxes themselves.
Extremely disappointed. I guess I have to deal with worse video to get my sound to work correctly again. The XG1v4 box goes back tomorrow.
Ps, I read all of the other threads, and I never did see anyone at Xfinity with an answer, or even indicate they understand the problem. Do you not even employ engineers these days??
user_89ccc8
Contributor
•
32 Messages
3 years ago
See this post for exactly what I'm talking about: https://www.dslreports.com/forum/r33108442-X1-Cloud-recordings-now-5-1
0
0
user_89ccc8
Contributor
•
32 Messages
3 years ago
After a lot of reading on various sites, it seems clear that the XG1v4 box sends out all audio inside a DD5.1 wrapper rather than a changing one that indicates what the actual audio format is. Thus a stereo only signal is sent without indicating it's only two channels worth of audio. This prevents AV receivers/sound bars from knowing what the actual audio is and applying the appropriate processing to generate a center channel signal.
The real question is why did this get broken in the new boxes, since it wasn't a problem in the legacy DVR boxes? And the second real question is why isn't it fixed by now?
(edited)
0
0
Andyr1
Gold Problem Solver
•
8K Messages
3 years ago
It used to work properly on the XG1v4, but a firmware update caused the bug whenever using anything IP-based. I haven't noticed any issues with QAM-based channels or DVR recordings from QAM channels. If you are watching using OnDemand, that is typically IP-based now. Also, even if QAM, it could be an issue with your local station on how it passes on signals. It could even be the Seth Meyers show not properly doing 5.1, and the station passes it on as-is. Here in Chicago, I can tell the local news and Colbert is actually plain stereo being passed on as 5.1 by WBBM, but other CBS network shows are true 5.1 and sound correct.
0
user_89ccc8
Contributor
•
32 Messages
3 years ago
It's so frustrating, because everything worked perfectly on my old DVR box, and I know they won't give it back to me. Given that Xfinity is pushing almost all content to IP/cloud access, the sound is corrupted on most everything we watch.
Given that our local channels (and the Late Night show) also worked fine on the other box I don't think it's them messing up the processing.
I can't wait for Xfinity to tell me the workaround is to go into the settings and force stereo only on a show-by-show basis. 🙄
Given that it seems to have been a firmware update that broke it, where's the fix?
3
0