Stutter HD Television playback (1 Viewer)

[mhoogenbosch]

I don't believe that TSReader can heavily load GPU - this is the task for decoder and renderer. What video decoder do you use for SDTV and HDTV?

both are LAV, but i seem to have this issue with all decoders.[DOUBLEPOST=1342705177][/DOUBLEPOST]

The GPU temperatures are quite high (95 C), so it's possible that some sort of clock throttling/power control is kicking in to stop the GPU from getting too hot.

It's the deinterlacing (of 1080i HDTV) that will generate a large amount of the GPU load - the 'other HD content' is probably 1080p so no deinterlacing is required.....

Tony

does that also explain why VLC doesn't have problems with this? And how can i force to not deinterlance for testing?

 

[Vasilich]

i have similar GPU, and get good results for LiveTV only with DXVA Native, not with CUDA.
And temperature of my GPU never exceeds 80 C, so for me it looks like you have GPU cooling problems.

 

[mhoogenbosch]

i have similar GPU, and get good results for LiveTV only with DXVA Native, not with CUDA.
And temperature of my GPU never exceeds 80 C, so for me it looks like you have GPU cooling problems.

i'm going to try and cool this then. Don't know how yet.. but will see.

If you look at GPU-Z, does your GPU load spike to 100%?

 

[Vasilich]

to be honest I don't remember. I'll try to post screenshots tonight

 

[mhoogenbosch]

TNX ALL!!! I think problem soved

Now i've got a pretty stable stable situation. It for sure is the GFX card. It gets 93 degrees with the lid of the Asrock system closed and runs the HD television fine. With the lid open its 'only' 83 degrees. But it works, even if its 31 degrees in the livingroom (i've removed my extra HDD unit which was lying directly on top of the GPU).

Is there a explanation of why the GFX runs so hot, or better why it's so hard for the GPU (60 ~ 70 % GPU usage) to show the HD television images? With a full blueray it's only 40 %.

Btw, i've switched back to Microsoft DTV decoder and default audiorender. With LAV i've got loads of dropped packages, now only a few while starting the stream, but not during watching.

 

[tourettes]

Is there a explanation of why the GFX runs so hot, or better why it's so hard for the GPU (60 ~ 70 % GPU usage) to show the HD television images? With a full blueray it's only 40 %.

Blu-rays are mostly film sourced material (1080p) where as live tv is 1080i. Deinterlacing 1080i causes lot of extra work for GPU.

 

[mhoogenbosch]

Is there a explanation of why the GFX runs so hot, or better why it's so hard for the GPU (60 ~ 70 % GPU usage) to show the HD television images? With a full blueray it's only 40 %.

Blu-rays are mostly film sourced material (1080p) where as live tv is 1080i. Deinterlacing 1080i causes lot of extra work for GPU.

Is there a way to turn of the hardware deinterlancing and let the software do it? Because my CPU is doing nothing?

 

[tourettes]

Is there a explanation of why the GFX runs so hot, or better why it's so hard for the GPU (60 ~ 70 % GPU usage) to show the HD television images? With a full blueray it's only 40 %.

Blu-rays are mostly film sourced material (1080p) where as live tv is 1080i. Deinterlacing 1080i causes lot of extra work for GPU.

Is there a way to turn of the hardware deinterlancing and let the software do it? Because my CPU is doing nothing?

In LAV you can fall back to softeware deinterlacing by using software video decoding. In any case it is better to leave the deinterlace to GPU if it can handle it.