Author Topic: 100Hz lag  (Read 1088 times)

November 17, 2011, 04:50:41 AM
Read 1088 times

sakoi

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So, recently bought myself a new 100hz Full HD LCD tv after owning a 50Hz LCD tv of the same size. When playing MKV films in 720p with high video bitrate on my previous tv all the films played smoothly with no lag. After getting the new 100Hz tv all of the 720p MKV films lag every now and then.

So my question is this. Has this something to do with the fact that the WD TV LIVE box has a maximum output of 60Hz, unlike my TV which runs on 100Hz(So that the refresh rate doesn't match), or is the fact that the video bitrate is just to high for the WD TV Live and the 100Hz tv reveals the lack of powerful enough hardware on the WD TV Live box since a 100Hz tv refreshes the image more often?

November 17, 2011, 06:09:40 AM
Reply #1

RavRob

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Never heard of this one before "working smoothly on 50hrz and lagging on 100hrz" but I know it can be easily overcome if you use custom firmware and stream via NFS instead of simply network sharing
Windows 7 Ultimate with SP1
WDTV Live
1.02.21 WDLXTV 0.5.1.4 (Beta)
Linksys - WUSB600N USB Adapter
DLink - Dir-655 Router
Atheros - AR8131 PCI-E Gigabit Ethernet Controller (NDIS 6.20)
XBMC - The Future of Television

November 17, 2011, 01:02:29 PM
Reply #2

sakoi

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That's the thing. I do use custom firmware. I use the B-rad Extreme Upgrade because I use an external hard-drive which runs Ext3 filesystem instead of FAT32 or NTFS, so I have to use custom firmware. But the odd thing is that I have been using that same custom firmware on my 50hz tv and on that one the videos played flawlessly.

November 17, 2011, 03:18:14 PM
Reply #3

RavRob

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Not sure why this is happening but in any case, sharing via NFS should take care of any lag.
Windows 7 Ultimate with SP1
WDTV Live
1.02.21 WDLXTV 0.5.1.4 (Beta)
Linksys - WUSB600N USB Adapter
DLink - Dir-655 Router
Atheros - AR8131 PCI-E Gigabit Ethernet Controller (NDIS 6.20)
XBMC - The Future of Television

November 17, 2011, 05:31:29 PM
Reply #4

thepanoguy

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It sounds like you may have a frequency up-scaling issue. Most film to video conversion is carried out at 24Hz. There is one way to confirm the lagging issue. Do a virgin rip of any DVD or bluray and observe if the lag still exists. Don't convert the video, use the vob or m2ts stream. You can also try to lock the digital TV video signal to 24Hz.

November 18, 2011, 02:04:25 AM
Reply #5

sakoi

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It seems that you are right, it looks like an upscaling issue, because when I play a DVDR(An untouched virgin DVD) there is no issues with lag. How do you suggest that I fix the upscaling issue?

November 18, 2011, 02:24:28 AM
Reply #6

sakoi

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I found out how. I just entered video/audio settings and set the resolution to 1080p at 24hz, and now everything works like a charm :)
Thanks a million for the advice, that did the trick :)