[-DDD-]

I have sometimes Artefacts when viewing LiveTV with Timeshift enabled in RAM.
It looks like http://abload.de/img/screenshot002q5sku.png

My Logs - http://xbmclogs.com/show.php?id=110187

i think that could be the problem:

PHP Code:

19:26:35 T:140307731646208   DEBUG: CDVDPlayerVideo::CalcDropRequirement - hurry: 1
19:26:36 T:140307303749376   DEBUG: Previous line repeats 7 times.
19:26:36 T:140307303749376   DEBUG: CDVDPlayerAudio:: Discontinuity1 - was:62448839977.348412, should be:62449055953.002342, error:215975.653931 


PHP Code:

19:24:56 T:140307731646208   ERROR: ffmpeg[F0810700]: [h264] reference picture missing during reorder
19:24:56 T:140307731646208   ERROR: ffmpeg[F0810700]: [h264] Missing reference picture, default is 65564 


I have OpenElec version r16713 running on Intel HD4000 Ivy Bridge.

The Issue exists on 576i and 720p Channels also. Sometimes i can play the recorded Video for an hour before the
Failure happen, sometimes it takes some minutes.

[FernetMenta]

vaapi even shows artifacts for mpeg2 without timeshift. I opened a bug on freedesktop:
https://bugs.freedesktop.org/show_bug.cgi?id=73424

unfortunately vaapi has a couple of issues.

[-DDD-]

I think that should be h264

PHP Code:

18:29:55 T:140306842380032  NOTICE: CDVDVideoCodecFFmpeg::Open() Using codec: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
18:29:55 T:140306842380032   DEBUG: FactoryCodec - Video: ff-h264 - Opened 


I don't have this Issue when watching LiveTV without Timeshift

[FernetMenta]

The screenshot is 576i (SD), this is mpeg2.
I don't see this issue on my testsystems which are either vdpau (Nvidia + AMD), sw decoder, dxva, , RPi, or vaapi (haswell, i3/i5).
So the most likely reason for this is an issue in vaapi + ivy bridge driver. I will ping fritsch, maybe he can run some tests on his system.

[-DDD-]

Yes, the Screenshot is not this Bug here, this was another Bug, but it looks similar to this.
I can try to screenshot this Issue if it would be helpful.

[fritsch]

I tried to reproduce this, by setting Timeshift to RAM, 5 x 100 MB which is my default settings. Then my gf watched "In aller Freundschaft" on ARD for more than one hour - without a single issue, here is the logfile: http://paste.ubuntu.com/6752435/ (see 20:11 until 21:30) nothing in the logs.

Hardware: Celeron 1007, Lanczos 3 Optimized for this 720p.

[-DDD-]

Today i also can't reproduce this on KiKa HD.
I will reply here when it happen again, with new Logs and Screenshots.