how do I get smooth 4k video playback?

[dr.kevin]

My laptop has dual gpu- one crappy igp and one 6650m.

When I run Chrome off the dgpu and try to play youtube 4k videos, it's choppy as fuck.
gpu-z tells me that the gpu is not even being loaded at 45%
the shitty amd quad core cpu is being hosed at 100% instead.

How do I force gpu acceleration in 4k playback?

 

[Araxie]

type in google chrome: chrome://gpu and check if hardware acceleration are correctly enabled or supported.

 

[dr.kevin]

crap. no wonder. I can download 4k mp4 and play it fine in mpchc and vlc though

Graphics Feature Status
Canvas: Hardware accelerated
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Hardware accelerated
Multiple Raster Threads: Disabled
Rasterization: Software only, hardware acceleration unavailable
Threaded Rasterization: Enabled
Video Decode: Software only, hardware acceleration unavailable
Video Encode: Hardware accelerated
WebGL: Hardware accelerated


Problems Detected
Accelerated video decode does not work with the discrete GPU on AMD switchables: 298968
Disabled Features: accelerated_video_decode
GPU rasterization is blacklisted on non-Android: 362779
Disabled Features: gpu_rasterization
Some drivers are unable to reset the D3D device in the GPU process sandbox
Applied Workarounds: exit_on_context_lost
TexSubImage2D() is faster for full uploads on ANGLE
Applied Workarounds: texsubimage2d_faster_than_teximage2d
Clear uniforms before first program use on all platforms: 124764, 349137
Applied Workarounds: clear_uniforms_before_first_program_use
Always rewrite vec/mat constructors to be consistent: 398694
Applied Workarounds: scalarize_vec_and_mat_constructor_args
Raster is using a single thread.
Disabled Features: multiple_raster_threads

 

[dr.kevin]

switched to dgpu only, and still have the same shitty playback.
cpu is not 100%, but gpu load is just 40%.

testing with this video....
https://www.youtube.com/watch?v=s0MDY9fl-IA


Graphics Feature Status
Canvas: Hardware accelerated
Flash: Hardware accelerated
Flash Stage3D: Hardware accelerated
Flash Stage3D Baseline profile: Hardware accelerated
Compositing: Hardware accelerated
Multiple Raster Threads: Disabled
Rasterization: Software only, hardware acceleration unavailable
Threaded Rasterization: Enabled
Video Decode: Hardware accelerated
Video Encode: Hardware accelerated
WebGL: Hardware accelerated

 

[bloodypulp]

your video GPUs lack hardware support for H265/VP9 codecs, so the CPU has to do the heavy number crunching.

 

[dr.kevin]

i think it has some "support?" for vp9 according to the video stats.

when playing 1440p, gpu load goes up to 75%, and video stats says it is using vp9 codec. 1440p plays smooth enough.

for some reason 4k video loads gpu less and is choppy.

only mpc-hc is smart enough to put a full load on the gpu and plays the smoothest. It only uses 50% cpu and 100% gpu.
The newest VLC player just chokes.
adobe flash player doesn't want to use the gpu even though Hardware acceleration is checked.
so I can't play any 4k content in any browser.

I just wish the browsers could be as smart as mpchc. Only thing I can do is use a 4k downloader app and watch the videos offline.

 

[The Cobra]

IIRC, none of the current video cards support either codec. Intel just released a new graphics for their CPU to decode stuff using the new standards.

http://techreport.com/news/27677/new-intel-igp-drivers-add-h-265-vp9-hardware-decode-support

 

[Dirty Butler]

Those poor lambos in that video!