[mythtv-users] Poor H.264 1080p playback

John Pilkington johnpilk222 at gmail.com
Tue Jan 8 11:02:41 UTC 2019

On 06/01/2019 19:28, Richard Shaw wrote:
> Ok, so I didn't know about the VDPAU # of processors option. I changed 
> it to 4 and playback was much better. Not quite perfect, but nothing 
> that anyone other than me in the house would notice.
> Thanks,
> Richard

This thread surprised me.  I don't have much H.264 material, and what I 
do have is from UK DVB-T2 recordings with data rates IIRC less than 3 
GB/hr.  I have a GT710 and a 2.6 GHz core2duo processor, both much less 
potent than Richard's. I hadn't noticed the number-of-processors option 
either; I have now set it to 2.

atop now shows individual cpu loads of less than 5% on playback of this 
material.  When I first installed the GT710 I reported a lack of 
'solidity' in the picture during panning, but newer drivers from 
rpmfusion and profiles in MythTV now give playback as good as I get from 
UPnP or the firestick 4K 20181124 mythfrontend.

A quick google suggests that blurays might now deliver 100 GB for 2 
hours.  Perhaps that *is* what's causing the difficulty.

John P

More information about the mythtv-users mailing list