HDTV shows artefacts during playback

[CJxD]

Here's the scenario to be brief:

1. PCTV nanostick 290e
   
2. TVHeadend
   
3. AMD Fusion e350
   
4. OpenELEC Fusion PVR 1.95.6
   

• All channels when streamed over network can be viewed without a hitch.
  
• BluRay and other H.264 sources can also be viewed without a hitch.
  

Here's what happens when I tune in to a channel such as BBC One HD:

This can occur once every 5 seconds, or constantly for 20 seconds. It's infrequent. It also only happens when the video is full screen. When it's in its small version on the TV guide, or in the background on the main menu, it never breaks up.

SDTV can also end up with audio and video out of sync. That's another issue but if anyone has a quick fix for that too I'd be very grateful.

Does anyone know what's wrong?

[CJxD]

Update: all standard definition videos including DVD's get out of sync with audio. It seems to be a problem with 1.95.5 according to this: https://github.com/OpenELEC/OpenELEC.tv/issues/928

Fixed by downgrading to 1.95.4

Still have issues with HDTV.

[yayatoto]

Hi CJxD,

I have the same problem as you.

1- Mediaportal TV server on a windows machine
2- ZOTAC AD-02
3- openelec PVR (i've tried many versions)

Live TV is working with no problems on SD channels,
Live TV is working as bad as yours on HD channels.

What is curious is that if i stream an HD recording (of an HD channels) from the windows machine, everything is wooking good even if the recording is not finished (kind of timshifting).

I can't fix this problem. Have you find a way ?

Thanks

[CJxD]

The fix has now been discussed on the GitHub issue:
https://github.com/OpenELEC/OpenELEC.tv/issues/1104

[yayatoto]

Thks for the link but unfortunatly the release didn't worked for me.

I have commented your thread on the git, i hope they will find something

[ToniQ]

Hi

I have the same problem with my zotac id 80 - Atom + Gforce 520m.

Them I've compiled a new Version beacouse its Fixed !?
Build from yesterday.
But the Problem is the Same.

With the TVheadend 2.99 with ubuntu there is no Problem with the same Hardware.

It is possible a tvheadend 2.9 build to import in Openelec ?

[LennyX]

Same problem (artefacts) also with VDR as pvr-client.

[ToniQ]

Same Problem with 1.99.1 :/

[CJxD]

It should have been fixed as I saw the commit get merged with the master branch.

Unless it was reverted later, the kernel patch has been applied to prevent H.264 decoding issues.
If you are still getting this issue, it may be to do with something other than the kernel.

Can sraue or someone else verify this wasn't taken back out again?

[jack burton]

Hi folks,
i have the same issue.
Openelec 2.0, live hd channels (h.264 streams) from tvheadend are stuttering during video playback.
Tried several video options (a/v sync, Vsync, etc..) without success...

Hardware: Asus M3a78 with 2700+ Amd CPU, Geforce 8200, 2GB ddr2


Any ideas ?

Thank you