H265 videos lagging in Windows XP SP3

[miba54]

Hi, I have an old laptop and since I'm currently travelling I had to abandon the comfort of my desktop pc and take this old chap with me. Before hitting the road I took some movies and TV shows with me to watch during my free time. Little did I know that the laptop wouldn't be able to play the h265 videos.

The interesting part is I have some 1080p movies and they work just fine, no lag at all. So I'm guessing the problem doesn't have to do with the power of the laptop. I only can't play the h265 videos, no matter what I do. I'm using MPC with K-Lite Mega Codec Pack. I tried VLC, KM, MPC-BE. None of them worked, they lag all the same. I ticked HEVC in Internal Filters in MPC. I changed hardware acceleration to DXVA2 (native) in the LAV Video Decoder settings and ticked HEVC. I tried everything that I know of.

Am I doing something wrong or is it impossible to view h265 videos on Windows XP? Thanks in advance.

[davexnet]

I doubt whether this old laptop has any HW acceleration for HEVC.

See this article for some general info as well as details about supporting hardware.
http://www.techspot.com/article/1131-hevc-h256-enconding-playback/

Your laptop is probably @ close to 100% cpu when trying to play these video - no wonder it lags.

[miba54]

I doubt whether this old laptop has any HW acceleration for HEVC.

See this article for some general info as well as details about supporting hardware.
http://www.techspot.com/article/1131-hevc-h256-enconding-playback/

Your laptop is probably @ close to 100% cpu when trying to play these video - no wonder it lags.

Is there any way I can check if it has HW acceleration?

You're right, it does take up 100% cpu when playing h265. But it takes up 100% when playing 1080p h264 as well. However in this case the video doesn't lag. Only in h265.

[davexnet]

Take a look at the hardware in the above article, they're all recent within a year or year and a half.

If your laptop is older the hardware will not support this technology

[miba54]

Take a look at the hardware in the above article, they're all recent within a year or year and a half.

If your laptop is older the hardware will not support this technology

I've just checked the link and my laptop is expectedly nowhere near the specified hardware, I believe this machine is over 10 years old.

What confused me is the laptop can easily play 1080p AVC and h264 videos but not 720p h265 videos. Would I be correct in saying that a 720p h265 video is harder for a computer to play than a 1080p h264 video? Is that why I'm having this issue? There isn't any special codec I can install or a special video player that would help me view h265 videos smoothly?

[AllisOne]

As far as know to decode h.265 you need more power than to decode h.264 (comparing for example the same bit rate). If your CPU goes up to 100% with h.264/AVC, it will need even more with h.265/HEVC, but it has nowhere to get it from .

One thing you can try is to install/register Strongene/Lentoid h.265/HEVC decoder from http://xhevc.com/en/downloads/downloadCenter.jsp, turn off internal HEVC decoder in MPC-HC and add Lentoid HEVC decoder as preferred in External filters.

[miba54]

As far as know to decode h.265 you need more power than to decode h.264 (comparing for example the same bit rate). If your CPU goes up to 100% with h.264/AVC, it will need even more with h.265/HEVC, but it has nowhere to get it from .

One thing you can try is to install/register Strongene/Lentoid h.265/HEVC decoder from http://xhevc.com/en/downloads/downloadCenter.jsp, turn off internal HEVC decoder in MPC-HC and add Lentoid HEVC decoder as preferred in External filters.

It actually worked. Thank you so much.