Live-TV stuttering when watching HD-channels (1 Viewer)

[MPManni]

MediaPortal Version: 1.2.2
MediaPortal Skin: Mustayaluca
Windows Version: Win7 x64 SP1
CPU Type: AMD Athlon II X2 250
HDD: 120 GB SSD + 500 GB WD AV-25 + 2.000 TB WD Caviar Green
Memory: 4 GB DDR3
Motherboard: ASUS M4A785TD-M EVO
Video Card: Radeon HD 4200 Onboard
Video Card Driver: Catalyst 12.01 preview
Sound Card: VT1708S Onboard
Sound Card AC3:
Sound Card Driver:
1. TV Card: DigitalDevices cine S2 V5.5
1. TV Card Type:
1. TV Card Driver: 2.3.0.47
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: Microsoft DTV
MPEG2 Audio Codec: Microsoft DTV
h.264 Video Codec: Microsoft DTV
Satelite/CableTV Provider: Astra 19.2°E
HTPC Case: Silverstone Grandia GD-02
Cooling: Scythe Big-Shuriken + 2 beQuiet SilentWings
Power Supply: Seasonic S12II-330 330W
Remote: Logitech Harmony 300
TV: LG 55LW570S
TV - HTPC Connection: HDMI

When watching HD-channels in Live-TV, for about 40 minutes everything is ok.
But then, stuttering begins (see TS-Writer.log) - this behaviour is reproducable. For me, there is nothing unusual at this time, that means: CPU is same like before (<40%), Latency is same like before. I have a SSD for system only, for timeshift and tv-recording i use a WD AV-25 disk.

I have tried a lot of things without success:
- Set energy-options to "Performance"
- Move Timeshift folder to another HDD
- Disable some client plugins (fan-art handler and so on)
- Disable EPG-Grabbing in idle
- Tried other Codecs (ffdshow or PowerDVD) for H.264 TV
- Switch to Win7-Basic theme instead of Aero
- Tried to use VMR-renderer insted of EVR

With SD-channels, there is no such problem, only when watching HD-channels for more than about 40 minutes.
Watching HD-channels directly with the TV-builtin-Tuner works fine and tests with Media Center and deactivated DXVA2 works also fine for HD-channels - so i don't believe that this is a problem with 'bad signal'.

The question is: What should i try next ?

Thanks, MPManni

 

[gurk]

AW: Live-TV stuttering when watching HD-channels

Hi, I observe a similar effect. After a while watching HD live TV the picture is stuttering in a rhythmic pattern (every 2 seconds) for about 10 Minutes. While this to processor load increases to nearly 100% in this observed rhythm. My assumption is that background EPG-grabbing causes that. There were times with the same system I had no issues like this.

 

[MPManni]

AW: Live-TV stuttering when watching HD-channels

Have you tried to disable the epg-grabbing ? i have disabled it, so there is no high cpu-load, but stuttering...

 

[gurk]

AW: Live-TV stuttering when watching HD-channels

Have you tried to disable the epg-grabbing ? i have disabled it, so there is no high cpu-load, but stuttering...

I unchecked "grabbing while time-shifting/recording" and "grabbing while idle" but there is no improvement.

 

[mm1352000]

Hello MPManni

I see there are quite a few continuity errors in your logs when you view the HD channels (ZDF HD, Das Erste HD etc.), usually starting after about 1 hour. The most common causes of continuity errors are signal quality and HDD issues. Heat can also cause problems occasionally.

Is it possible that your timeshift HDD is filling up after 1 hour of HD viewing? I see some "not enough free space on drive" messages in your logs. There can be problems if your timeshifting HDD doesn't have enough free space available. Performance of the drive is reduced when it starts to get full, and timeshifting would not be possible if the drive filled completely.

mm

 

[lhcomputer]

AW: Live-TV stuttering when watching HD-channels

Take the catalyst 11.12. I think this work. Make a clean deinstallieren from your 12.x catalyst or Take a Image without Catalyst 12.x.
My HTPC work with the HD 4250 ON Board with this driver Version. The oder have Trouble with drop Frames.

Second Way Va. Deinterlacing ON Bob and Wait for vertikal Blank Off.

Center PC