Audio Lag During Timeshifting (1 Viewer)

[gperkinson]

Hi All,

I'm currently having audio lag issues when watching a recording during timeshifting. Watching completed recordings seem to be fine.

This has happened since loading Vista SP2 and moving to MP V 1.0.2.0.

I'm currently using CoreAVC Video Codec and have tried a number of Audio codecs, but same issue.

Any help appreciated.

Regards

Graham

 

[odonnghaille]

Hi gperkinson, Im no expert but would it have something to do with dedicated disks, i use ram for my timeshifting and a second hard drive for recording, ive yet to try timeshifting and recording at the same time, I must admit

 

[gperkinson]

Hi,

Thanks for you note.

I notice in the recording folders section that it makes a note of using a dedicated disk for timeshifting, so good point. Currently it is the same disk as the recording itself - wonder if this matters? I have also moved from RAID 0 to RAID 1 mirrored disks, so that might also cause issues??

How do you set it to the RAM out of interest - I have 4 GB, so it would be ideal!!

Regards

Graham

 

[odonnghaille]

I can help you here, i use super ramdisk, Its commerical, but there are free ones too (I,ve never tried them).

You Install it, You label it and you create how much ram you want to use in MB's, I set it to 512mb but this wasnt enough for HD channels. So made it 1GB. Windows xp only recognises approx 3.5gb, so be careful you dont eat into it.

 

[gperkinson]

I have a partitioned C:\ split 100GB for programs and 400GB spare, so I might use thiss and see how things go. My data disk is 1.5 TB RAID 1 mirrored - as mentioned, previously my disks were spripped, so this might also be putting more pressure on them, especially having recording and timeshifting on the same disk which often records multiple channels.

Will let you know how I go.

Anyone else got some pointers??

Graham

 

[gperkinson]

Hi,

So far, so good with setting the timeshifting to the partitioned separate drive. I wonder with the move to RAID 1 this might have started the issues, especially recording 2 things at once and timeshifting on one - I'm actually doing that right now (or my wife at least is)

I also noticed a number of files in the old timeshifting folder - should they be there? I would have assumed these would have been deleted after timeshifting had finished??

Anyhow, appreciate your help.

Regards

Graham

 

[gperkinson]

Hi All,

Have not posted to this forum for a while, but I have been battling with video and audio synchonisation both on live TV and recorded TV and even imported avi files.

Have recently downloaded HDPack 2.2 and used PDVD9 which gives a great picture, but also has the same issues with synchonisation. Have tried a number of audio codecs without any luck.

Can anybody give some advice please.

Regards

Graham

 

[gperkinson]

Hi All,

Along with the audio synch issues, I also get periodic pixelation as well.

I have introduced a daily re-boot process which has seemed to help these issues and I also do a periodic "disk cleanup" on the operating system drive.

I also notice that if I watch something live which is also recording, this seems to start these issues as well. The timeshifting folder is directed to the partitioned operating system drive and recordings go to a separate drive again.

Can anybody help with the above.

Thanks

Graham

 

[kiwijunglist]

What gfx card, and what driver version?
What are the details of the channel you having problems with? (DVB-T vs Analog / Resolution 720P 1080P 1080i / Interlaced or progressive / MPEG2 or H264 / Audio type: AAC vs AC3 vs ??)
If you run mediaportal in windowed mode, do you still get the problems. If so what is CPU useage when you have the problems.
Run graphstudio and post the graph of the channel you are having problems with.

 

[gperkinson]

Hi Kiwijunglist,

Tonight it was TV1 on Freeview DVB-T 1080 (deinterlaced setting on "best") Graphics Card shown under "My System" with latest drivers. I have audio codec set to AC3 - I'm watching Criminal Minds now with the recording switched off and it's fine - no pixelation or audio lag - but pixelation when it was recording and I was watching live.

I have looked at the CPU usage in windows mode when I had the problem and it was peaking at 30% - I have a gruntty machine - see My System.

I have seem graphstudio mentioned before - do you have a link with instructions on how to use this? Is it difficult to setup??