Timeshifting issue

sockman · 2006-05-07, 03:34

Hey,
Media Portal is up and running very nicely in most respects for me. I have one issue with the timeshifting functionality and I am not sure if it is a hardware or software issue.

When I am watching TV with timeshifting on, it works most of the time, but after I have been recording for a while it can start to stutter and give me intermittent problems. Once this starts if I try to rewind or skip back a few minutes I risk a complete freeze. If I watch TV with timeshifting disabled then I get no issues with the TV stuttering or starting to jump. Does anyone else have this issue? It seems to me like it is an issue with writing the time shift buffer to the hard drive.

Any ideas or experiences would be appreciated.

Area: Media Portal Program
MediaPortal Version: 0.2.0.0 RC4 (2006-04-18)
MediaPortal Skin: MCE
Windows Version: Windows XP (SP2)
.NET CLR Version: 2.0.50727
DirectX Version: 4.09.00.0904 (9.0c)
Audio Codec: MPEG/AC3/DTS/LPCM Audio Decoder
Video Codec: Mpeg2Dec Filter
CPU Type: AMD Athlon 64 3000+
Memory: 511 MB
Motherboard: 'K8N' (ASUSTeK Computer INC.)
TV Card Model: Videomate
TV Card Type: Hardware
TV Card Driver: -
Video Card Model: Nvidia Geforce 6200 (256 MB)
Video Card Driver: -
Video Card Resolution: 800x600
Video Render Type: -
Audio Card Model: Realtek AC'97 Audio
Audio Card Driver: -
Synopsis:: -

FlipGer · 2006-05-07, 08:02

Hi,

What happens if you change the channel, if this stutter occurs?

Where do you record to? Configure->Television->Capture Cards->Edit
How much space is there left?
Can you change the recording folder to another drive?

Flip.

sockman · 2006-05-08, 07:16

Once it starts happening, changing the channel doesn't really help. I have heaps of storage space left over (100 GB on my seagate SATA drive).

Just to clarify - this doesn't happen on a predictable basis. Last night I watched a movie on TV and the timeshift function worked perfectly. Other times it can cause the whole thing to stutter and freeze up.

Cheers,
Ben

NarkoKrig · 2006-07-20, 21:25

Area: Media Portal Program
MediaPortal Version: 0.2.0.0 (2006-07-10)
MediaPortal Skin: MCE
Windows Version: Windows XP (SP2)
.NET CLR Version: 2.0.50727
DirectX Version: 4.09.00.0904 (9.0c)
Audio Codec: MPA Decoder Filter
Video Codec: MPV Decoder Filter
CPU Type: AMD Athlon 64 3200+
Memory: 1 GB
Motherboard: KN8 SLI(NF-CK804)
TV Card Model: Hauppauge WinTV PVR MCE500
TV Card Type: Hardware
TV Card Driver: 2.0.35-233-48
Video Card Model: Nvidia Geforce 6200 Turbocache(tm) (256 MB)
Video Card Driver: 9.1.3.1
Video Card Resolution: 800x600
Video Render Type: Overlay
Audio Card Model: Realtek AC'97 Audio ALC850
Audio Card Driver: 3.90
Synopsis::

Im having the same problem. And also when not using timeshift, my audio/sound gets out of sync after a while.

Problem description:Tv out of sync without timeshift on, and studdering picture / sound when using timeshift for a period of time.(fixes with channelchange / fastforward)

Solution:
I tried 8 different drivers for that soundcard also for different motherboards (abit, Asus) and legacy drivers from Realtek. nothing worked. Also tried numerous of different codecs, all same problem.

So i disabled the Soundcard in bios and installed my old Leadtek 6x Soundcard with CMI8737 chipset (c-media). Now everything works smooth.
I have heard alot of people have this problem with the ac'97 ALC850 sound chip from realtek, and only solutions i have found on the internet has all been to disable it and install another card like c-media or Soundblaster etc.

Issih · 2006-07-22, 20:16

I had similar issues - stuttering with timeshifting on, audio sync problems with it off. For me, the biggest improvement was to change the audio rendering device, not the codec, the rendering device. Oddly, this doesn't seem to be possible within the setup utility. Instead you have to do it within media portal itself. from the home page, select:

Settings->MyTv->Audio Renderer

I think thats right anyway, its pretty obvious once you are in there.

I found that changing to the default directsound output solved most of my stuttering issues. The media portal selected default was a wave out device. Changing to a direct sound one solved my stuttering almost entirely.

Hope this helps some people, although I think I saw a post saying that some people had difficulty with ac3 passthrough using direct sound - I can't comment on that I'm afraid, as I currently use good old lo tech stereo, runing my hifi from the computers line out. Very backwards I know....

Issih

2006-05-07, 03:34	#1 (permalink)
sockman Portal Member Join Date: May 2006 Posts: 17 Thanks: 0 Thanked 0 Times in 0 Posts	Timeshifting issue Hey, Media Portal is up and running very nicely in most respects for me. I have one issue with the timeshifting functionality and I am not sure if it is a hardware or software issue. When I am watching TV with timeshifting on, it works most of the time, but after I have been recording for a while it can start to stutter and give me intermittent problems. Once this starts if I try to rewind or skip back a few minutes I risk a complete freeze. If I watch TV with timeshifting disabled then I get no issues with the TV stuttering or starting to jump. Does anyone else have this issue? It seems to me like it is an issue with writing the time shift buffer to the hard drive. Any ideas or experiences would be appreciated. Area: Media Portal Program MediaPortal Version: 0.2.0.0 RC4 (2006-04-18) MediaPortal Skin: MCE Windows Version: Windows XP (SP2) .NET CLR Version: 2.0.50727 DirectX Version: 4.09.00.0904 (9.0c) Audio Codec: MPEG/AC3/DTS/LPCM Audio Decoder Video Codec: Mpeg2Dec Filter CPU Type: AMD Athlon 64 3000+ Memory: 511 MB Motherboard: 'K8N' (ASUSTeK Computer INC.) TV Card Model: Videomate TV Card Type: Hardware TV Card Driver: - Video Card Model: Nvidia Geforce 6200 (256 MB) Video Card Driver: - Video Card Resolution: 800x600 Video Render Type: - Audio Card Model: Realtek AC'97 Audio Audio Card Driver: - Synopsis:: -

2006-07-20, 21:25	#4 (permalink)
NarkoKrig Portal Member Join Date: Jul 2006 Location: Copenhagen Age: 32 Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts Country:	Same problem, but also sync problem when not using timeshift Area: Media Portal Program MediaPortal Version: 0.2.0.0 (2006-07-10) MediaPortal Skin: MCE Windows Version: Windows XP (SP2) .NET CLR Version: 2.0.50727 DirectX Version: 4.09.00.0904 (9.0c) Audio Codec: MPA Decoder Filter Video Codec: MPV Decoder Filter CPU Type: AMD Athlon 64 3200+ Memory: 1 GB Motherboard: KN8 SLI(NF-CK804) TV Card Model: Hauppauge WinTV PVR MCE500 TV Card Type: Hardware TV Card Driver: 2.0.35-233-48 Video Card Model: Nvidia Geforce 6200 Turbocache(tm) (256 MB) Video Card Driver: 9.1.3.1 Video Card Resolution: 800x600 Video Render Type: Overlay Audio Card Model: Realtek AC'97 Audio ALC850 Audio Card Driver: 3.90 Synopsis:: Im having the same problem. And also when not using timeshift, my audio/sound gets out of sync after a while. Problem description:Tv out of sync without timeshift on, and studdering picture / sound when using timeshift for a period of time.(fixes with channelchange / fastforward) *Solution:* I tried 8 different drivers for that soundcard also for different motherboards (abit, Asus) and legacy drivers from Realtek. nothing worked. Also tried numerous of different codecs, all same problem. So i disabled the Soundcard in bios and installed my old Leadtek 6x Soundcard with CMI8737 chipset (c-media). Now everything works smooth. I have heard alot of people have this problem with the ac'97 ALC850 sound chip from realtek, and only solutions i have found on the internet has all been to disable it and install another card like c-media or Soundblaster etc.

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2006-05-07, 08:02	#2 (permalink)
FlipGer Super Moderator Join Date: Apr 2004 Location: Leipzig, Germany Age: 33 Posts: 2,232 Thanks: 29 Thanked 52 Times in 38 Posts Country: My System	Hi, What happens if you change the channel, if this stutter occurs? Where do you record to? Configure->Television->Capture Cards->Edit How much space is there left? Can you change the recording folder to another drive? Flip.

2006-05-08, 07:16	#3 (permalink)
sockman Portal Member Join Date: May 2006 Posts: 17 Thanks: 0 Thanked 0 Times in 0 Posts	Once it starts happening, changing the channel doesn't really help. I have heaps of storage space left over (100 GB on my seagate SATA drive). Just to clarify - this doesn't happen on a predictable basis. Last night I watched a movie on TV and the timeshift function worked perfectly. Other times it can cause the whole thing to stutter and freeze up. Cheers, Ben

2006-07-22, 20:16	#5 (permalink)
Issih Portal Member Join Date: Jul 2006 Posts: 8 Thanks: 0 Thanked 0 Times in 0 Posts	I had similar issues - stuttering with timeshifting on, audio sync problems with it off. For me, the biggest improvement was to change the audio rendering device, not the codec, the rendering device. Oddly, this doesn't seem to be possible within the setup utility. Instead you have to do it within media portal itself. from the home page, select: Settings->MyTv->Audio Renderer I think thats right anyway, its pretty obvious once you are in there. I found that changing to the default directsound output solved most of my stuttering issues. The media portal selected default was a wave out device. Changing to a direct sound one solved my stuttering almost entirely. Hope this helps some people, although I think I saw a post saying that some people had difficulty with ac3 passthrough using direct sound - I can't comment on that I'm afraid, as I currently use good old lo tech stereo, runing my hifi from the computers line out. Very backwards I know.... Issih