H265 decoding

[Hecan]

Yesterday I tried to watch a film compressed in H265 and I couldn’t. Neither in Android or Windows. I though the z8300 had dedicated hardware for that, but when I tried, although I could see well the video on Windows I couldn’t hear it without little silence gaps. Do you know if there is needed some type of configuration or if the CPU has limitations for the decoding?

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[Laura]

just tested it and works fine for me, under windows, mpc-hc. you have to manually enable hw accelerated hevc decoding in the lav video decoder options though

[Hecan]

The problem may be the film, It’s H265 1080p 10bit encoded. I would try other 10bit file but I can’t right now

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[Martin Gorbush]

Intel Atom x5-Z8x00 GPU (or rather VPU) doesn’t support hardware 10bit decoding even in hybrid mode. Neighter VP9 nor H.264/H.265(HEVC). Only 8bpc.

[Hecan]

Thanks both

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[highwind]

H265 in 10bit works for me on my two Z8300 tablets, but ONLY under Windows with MPC-HC

 

[Martin Gorbush]

I’m 100% sure that this is done by software and anything beyond 720p30 is quite impossible to decode live with such low end CPU.

If you use MPC-HC player then you should see if there is software or hardware decoder in use ([H/W] text on status bar).

[highwind]

MPC-HC doesnt show anything on the status bar regarding HW or SW

I guess it is hybrid decoding because the same file lags heavily with VLC (both Android and Windows) and MX Player (Android)

[Martin Gorbush]

I will check myself HEVC 10 bit decoding under Windows. But I doubt it is hybrid because Intel doesn’t specify on theirs page that this CPU/GPU is capable of that.

IIRC even hybrid decoding is recognised by MPC-HC as hardware ([H/W]). Therefore I suppose that ffmpeg in this player is just faster than compiled for android.
It might be thanks to 64 bits. Do you use MPC-HC x64 edition?

[highwind]

Yes, its the x64 edition of MPC-HC

 

The videos are between 2500 and 2800 Kbps and CPU load while playing is atleast 70% on all cores (sometimes peaking at even 100%) making the tablet kinda hot and draining battery very fast… But as a “pseudo media player” connected to power and a TV this is OK for me as long as it plays the videos without lag/stutter.

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